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mutter/clutter/cogl/common/cogl-material.c

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[cogl] Updates all file headers and removes lots of trailing white space Adds missing notices, and ensures all the notices are consistent. The Cogl blurb also now reads: * Cogl * * An object oriented GL/GLES Abstraction/Utility Layer
2009-04-27 10:48:12 -04:00
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl.h"
#include "cogl-internal.h"
#include "cogl-context.h"
#include "cogl-handle.h"
#include "cogl-material-private.h"
Fix building GLES 2 after the material branch merge - In cogl-material.h it directly sets the values of the CoglMaterialLayerCombineFunc to some GL_* constants. However these aren't defined in GLES 2 beacuse it has no fixed function texture combining. Instead the CGL_* versions are now used. cogl-defines.h now sets these to either the GL_* version if it is available, otherwise it directly uses the number. - Under GLES 2 cogl-material.c needs to access the CoglTexture struct so it needs to include cogl-texture-private.h - There are now #define's in cogl-gles2-wrapper.h to remap the GL function names to the wrapper names. These are disabled in cogl-gles2-wrapper.c by defining COGL_GLES2_WRAPPER_NO_REMAP. - Added missing wrappers for glLoadMatrixf and glMaterialfv. - Renamed the TexEnvf wrapper to TexEnvi because the latter is used instead from the material API.
2009-01-29 08:40:37 -05:00
#include "cogl-texture-private.h"
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
#include "cogl-blend-string.h"
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
#include <glib.h>
[cogl-material] Adds a cogl_material_set_color function The other colors of a material; such as the ambient and diffuse color are only relevent when we can enable lighting. This adds a basic unlit color property. Later cogl_set_source_color can be integrated to either modify the color of the current source material, or maintain a special singlton CoglMaterial that is modified by calls to cogl_set_source_color and implicitly made current.
2008-12-23 18:35:49 -05:00
#include <string.h>
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
Removes cogl_blend_func and cogl_alpha_func The GL blend function and alpha function are now controlled by the material code, and even internally Cogl should now be using the material API when it needs control of these.
2009-01-24 10:09:43 -05:00
/*
* GL/GLES compatability defines for material thingies:
*/
#ifdef HAVE_COGL_GLES2
Fix building GLES 2 after the material branch merge - In cogl-material.h it directly sets the values of the CoglMaterialLayerCombineFunc to some GL_* constants. However these aren't defined in GLES 2 beacuse it has no fixed function texture combining. Instead the CGL_* versions are now used. cogl-defines.h now sets these to either the GL_* version if it is available, otherwise it directly uses the number. - Under GLES 2 cogl-material.c needs to access the CoglTexture struct so it needs to include cogl-texture-private.h - There are now #define's in cogl-gles2-wrapper.h to remap the GL function names to the wrapper names. These are disabled in cogl-gles2-wrapper.c by defining COGL_GLES2_WRAPPER_NO_REMAP. - Added missing wrappers for glLoadMatrixf and glMaterialfv. - Renamed the TexEnvf wrapper to TexEnvi because the latter is used instead from the material API.
2009-01-29 08:40:37 -05:00
#include "../gles/cogl-gles2-wrapper.h"
Removes cogl_blend_func and cogl_alpha_func The GL blend function and alpha function are now controlled by the material code, and even internally Cogl should now be using the material API when it needs control of these.
2009-01-24 10:09:43 -05:00
#endif
Call glActiveTexture and glClientActiveTexture through cogl_get_proc_address All GL functions that are defined in a version later than 1.1 need to be called through cogl_get_proc_address because the Windows GL DLL does not export them to directly link against.
2009-02-16 07:42:08 -05:00
#ifdef HAVE_COGL_GL
#define glActiveTexture ctx->pf_glActiveTexture
#define glClientActiveTexture ctx->pf_glClientActiveTexture
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
#define glBlendFuncSeparate ctx->pf_glBlendFuncSeparate
Load glBlendEquation and glBlendColor using cogl_get_proc_address These are defined since OpenGL 1.2 and since Windows doesn't export any functions defined after 1.1 we need to load them dynamically.
2009-06-04 06:50:06 -04:00
#define glBlendEquation ctx->pf_glBlendEquation
#define glBlendColor ctx->pf_glBlendColor
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
#define glBlendEquationSeparate ctx->pf_glBlendEquationSeparate
Call glActiveTexture and glClientActiveTexture through cogl_get_proc_address All GL functions that are defined in a version later than 1.1 need to be called through cogl_get_proc_address because the Windows GL DLL does not export them to directly link against.
2009-02-16 07:42:08 -05:00
#endif
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
static void _cogl_material_free (CoglMaterial *tex);
static void _cogl_material_layer_free (CoglMaterialLayer *layer);
[cogl-handle] Optimize how we define cogl handles The cogl_is_* functions were showing up quite high on profiles due to iterating through arrays of cogl handles. This does away with all the handle arrays and implements a simple struct inheritance scheme. All cogl objects now add a CoglHandleObject _parent; member to their main structures. The base object includes 2 members a.t.m; a ref_count, and a klass pointer. The klass in turn gives you a type and virtual function for freeing objects of that type. Each handle type has a _cogl_##handle_type##_get_type () function automatically defined which returns a GQuark of the handle type, so now implementing the cogl_is_* funcs is just a case of comparing with obj->klass->type. Another outcome of the re-work is that cogl_handle_{ref,unref} are also much more efficient, and no longer need extending for each handle type added to cogl. The cogl_##handle_type##_{ref,unref} functions are now deprecated and are no longer used internally to Clutter or Cogl. Potentially we can remove them completely before 1.0.
2009-04-01 12:16:44 -04:00
COGL_HANDLE_DEFINE (Material, material);
COGL_HANDLE_DEFINE (MaterialLayer, material_layer);
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
[cogl-material] Fixes some dirty flag checks Flushing material layers wasn't clearing the right dirty flag and some of the tests used to avoid re-submitting GL state weren't complete.
2009-02-06 11:05:08 -05:00
/* #define DISABLE_MATERIAL_CACHE 1 */
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
GQuark
_cogl_material_error_quark (void)
{
return g_quark_from_static_string ("cogl-material-error-quark");
}
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
CoglHandle
cogl_material_new (void)
{
/* Create new - blank - material */
CoglMaterial *material = g_new0 (CoglMaterial, 1);
[cogl material] optimize logging of material colors in the journal We now put the color of materials into the vertex array used by the journal instead of calling glColor() but the number of requests for the material color were quite expensive so we have changed the material color to internally be byte components instead of floats to avoid repeat conversions and added _cogl_material_get_colorubv as a fast-path for the journal to copy data into the vertex array.
2009-06-04 09:23:16 -04:00
GLubyte *unlit = material->unlit;
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
GLfloat *ambient = material->ambient;
GLfloat *diffuse = material->diffuse;
GLfloat *specular = material->specular;
GLfloat *emission = material->emission;
[doc] Hooks up cogl-material reference documentation Adds some more gtk-doc comments to cogl-material.h, and adds a new section to cogl-sections.txt
2008-12-22 11:19:49 -05:00
[cogl-material] Adds a cogl_material_set_color function The other colors of a material; such as the ambient and diffuse color are only relevent when we can enable lighting. This adds a basic unlit color property. Later cogl_set_source_color can be integrated to either modify the color of the current source material, or maintain a special singlton CoglMaterial that is modified by calls to cogl_set_source_color and implicitly made current.
2008-12-23 18:35:49 -05:00
/* Use the same defaults as the GL spec... */
[cogl material] optimize logging of material colors in the journal We now put the color of materials into the vertex array used by the journal instead of calling glColor() but the number of requests for the material color were quite expensive so we have changed the material color to internally be byte components instead of floats to avoid repeat conversions and added _cogl_material_get_colorubv as a fast-path for the journal to copy data into the vertex array.
2009-06-04 09:23:16 -04:00
unlit[0] = 0xff; unlit[1] = 0xff; unlit[2] = 0xff; unlit[3] = 0xff;
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
material->flags |= COGL_MATERIAL_FLAG_DEFAULT_COLOR;
[cogl-material] Adds a cogl_material_set_color function The other colors of a material; such as the ambient and diffuse color are only relevent when we can enable lighting. This adds a basic unlit color property. Later cogl_set_source_color can be integrated to either modify the color of the current source material, or maintain a special singlton CoglMaterial that is modified by calls to cogl_set_source_color and implicitly made current.
2008-12-23 18:35:49 -05:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
/* Use the same defaults as the GL spec... */
ambient[0] = 0.2; ambient[1] = 0.2; ambient[2] = 0.2; ambient[3] = 1.0;
diffuse[0] = 0.8; diffuse[1] = 0.8; diffuse[2] = 0.8; diffuse[3] = 1.0;
specular[0] = 0; specular[1] = 0; specular[2] = 0; specular[3] = 1.0;
emission[0] = 0; emission[1] = 0; emission[2] = 0; emission[3] = 1.0;
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
material->flags |= COGL_MATERIAL_FLAG_DEFAULT_GL_MATERIAL;
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
/* Use the same defaults as the GL spec... */
material->alpha_func = COGL_MATERIAL_ALPHA_FUNC_ALWAYS;
material->alpha_func_reference = 0.0;
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
material->flags |= COGL_MATERIAL_FLAG_DEFAULT_ALPHA_FUNC;
[doc] Hooks up cogl-material reference documentation Adds some more gtk-doc comments to cogl-material.h, and adds a new section to cogl-sections.txt
2008-12-22 11:19:49 -05:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
/* Not the same as the GL default, but seems saner... */
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
#ifndef HAVE_COGL_GLES
material->blend_equation_rgb = GL_FUNC_ADD;
material->blend_equation_alpha = GL_FUNC_ADD;
material->blend_src_factor_alpha = GL_SRC_ALPHA;
material->blend_dst_factor_alpha = GL_ONE_MINUS_SRC_ALPHA;
material->blend_constant[0] = 0;
material->blend_constant[1] = 0;
material->blend_constant[2] = 0;
material->blend_constant[3] = 0;
#endif
Default to a blend function that expects premultiplied colors Many operations, like mixing two textures together or alpha-blending onto a destination with alpha, are done most logically if texture data is in premultiplied form. We also have many sources of premultiplied texture data, like X pixmaps, FBOs, cairo surfaces. Rather than trying to work with two different types of texture data, simplify things by always premultiplying texture data before uploading to GL. Because the default blend function is changed to accommodate this, uses of pure-color CoglMaterial need to be adapted to add premultiplication. gl/cogl-texture.c gles/cogl-texture.c: Always premultiply non-premultiplied texture data before uploading to GL. cogl-material.c cogl-material.h: Switch the default blend functions to ONE, ONE_MINUS_SRC_ALPHA so they work correctly with premultiplied data. cogl.c: Make cogl_set_source_color() premultiply the color. cogl.h.in color-material.h: Add some documentation about premultiplication and its interaction with color values. cogl-pango-render.c clutter-texture.c tests/interactive/test-cogl-offscreen.c: Use premultiplied colors. http://bugzilla.openedhand.com/show_bug.cgi?id=1406 Signed-off-by: Robert Bragg <robert@linux.intel.com>
2009-05-09 14:39:01 -04:00
material->blend_src_factor_rgb = GL_ONE;
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
material->blend_dst_factor_rgb = GL_ONE_MINUS_SRC_ALPHA;
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
material->flags |= COGL_MATERIAL_FLAG_DEFAULT_BLEND;
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
material->layers = NULL;
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
material->n_layers = 0;
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
return _cogl_material_handle_new (material);
}
static void
_cogl_material_free (CoglMaterial *material)
{
/* Frees material resources but its handle is not
released! Do that separately before this! */
g_list_foreach (material->layers,
[cogl-handle] Optimize how we define cogl handles The cogl_is_* functions were showing up quite high on profiles due to iterating through arrays of cogl handles. This does away with all the handle arrays and implements a simple struct inheritance scheme. All cogl objects now add a CoglHandleObject _parent; member to their main structures. The base object includes 2 members a.t.m; a ref_count, and a klass pointer. The klass in turn gives you a type and virtual function for freeing objects of that type. Each handle type has a _cogl_##handle_type##_get_type () function automatically defined which returns a GQuark of the handle type, so now implementing the cogl_is_* funcs is just a case of comparing with obj->klass->type. Another outcome of the re-work is that cogl_handle_{ref,unref} are also much more efficient, and no longer need extending for each handle type added to cogl. The cogl_##handle_type##_{ref,unref} functions are now deprecated and are no longer used internally to Clutter or Cogl. Potentially we can remove them completely before 1.0.
2009-04-01 12:16:44 -04:00
(GFunc)cogl_handle_unref, NULL);
Fix the leak of the GList of layers in CoglMaterial http://bugzilla.openedhand.com/show_bug.cgi?id=1624 Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
2009-06-03 17:08:17 -04:00
g_list_free (material->layers);
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
g_free (material);
}
[material] avoid flushing the journal when just changing the color Whenever we modify a material we call _cogl_material_pre_change_notify which checks to see if the material is referenced by the journal and if so flushes if before we modify the material. Since the journal logs material colors directly into a vertex array (to avoid us repeatedly calling glColor) then we know we never need to flush the journal when material colors change.
2009-06-17 18:31:11 -04:00
static gboolean
_cogl_material_needs_blending_enabled (CoglMaterial *material,
GLubyte *override_color)
[Cogl] Fixes automatic handling of the GL blend enable state. Bug #1460 - Handling of flags in cogl_material_set_color Cogl automatically enables/disables blending based on whether the source color has an alhpa < 1.0, or if any textures with an alpha component are in use, but it wasn't doing it quite right. At the same time I removed some of the dirty flags which on second thought are nothing more than micro-optimsations that only helped clutter the code. thanks to Owen Taylor for reporting the bug
2009-02-19 04:01:18 -05:00
{
GList *tmp;
/* XXX: If we expose manual control over ENABLE_BLEND, we'll add
* a flag to know when it's user configured, so we don't trash it */
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
/* XXX: Uncomment this to disable all blending */
#if 0
return;
#endif
[material] avoid flushing the journal when just changing the color Whenever we modify a material we call _cogl_material_pre_change_notify which checks to see if the material is referenced by the journal and if so flushes if before we modify the material. Since the journal logs material colors directly into a vertex array (to avoid us repeatedly calling glColor) then we know we never need to flush the journal when material colors change.
2009-06-17 18:31:11 -04:00
if ((override_color && override_color[3] != 0xff) ||
material->unlit[3] != 0xff)
return TRUE;
[Cogl] Fixes automatic handling of the GL blend enable state. Bug #1460 - Handling of flags in cogl_material_set_color Cogl automatically enables/disables blending based on whether the source color has an alhpa < 1.0, or if any textures with an alpha component are in use, but it wasn't doing it quite right. At the same time I removed some of the dirty flags which on second thought are nothing more than micro-optimsations that only helped clutter the code. thanks to Owen Taylor for reporting the bug
2009-02-19 04:01:18 -05:00
for (tmp = material->layers; tmp != NULL; tmp = tmp->next)
{
CoglMaterialLayer *layer = tmp->data;
[cogl] handle_automatic_blend_enable(): consider layers with invalid textures A layer object may be instantiated when setting a combine mode, but before a texture is associated. (e.g. this is done by the pango renderer) if this is the case we shouldn't call cogl_texture_get_format() with an invalid cogl handle. This patch skips over layers without a texture handle when determining if any textures have an alpha channel.
2009-04-02 06:50:44 -04:00
/* NB: A layer may have a combine mode set on it but not yet have an
* associated texture. */
if (!layer->texture)
continue;
[Cogl] Fixes automatic handling of the GL blend enable state. Bug #1460 - Handling of flags in cogl_material_set_color Cogl automatically enables/disables blending based on whether the source color has an alhpa < 1.0, or if any textures with an alpha component are in use, but it wasn't doing it quite right. At the same time I removed some of the dirty flags which on second thought are nothing more than micro-optimsations that only helped clutter the code. thanks to Owen Taylor for reporting the bug
2009-02-19 04:01:18 -05:00
if (cogl_texture_get_format (layer->texture) & COGL_A_BIT)
[material] avoid flushing the journal when just changing the color Whenever we modify a material we call _cogl_material_pre_change_notify which checks to see if the material is referenced by the journal and if so flushes if before we modify the material. Since the journal logs material colors directly into a vertex array (to avoid us repeatedly calling glColor) then we know we never need to flush the journal when material colors change.
2009-06-17 18:31:11 -04:00
return TRUE;
[Cogl] Fixes automatic handling of the GL blend enable state. Bug #1460 - Handling of flags in cogl_material_set_color Cogl automatically enables/disables blending based on whether the source color has an alhpa < 1.0, or if any textures with an alpha component are in use, but it wasn't doing it quite right. At the same time I removed some of the dirty flags which on second thought are nothing more than micro-optimsations that only helped clutter the code. thanks to Owen Taylor for reporting the bug
2009-02-19 04:01:18 -05:00
}
[material] avoid flushing the journal when just changing the color Whenever we modify a material we call _cogl_material_pre_change_notify which checks to see if the material is referenced by the journal and if so flushes if before we modify the material. Since the journal logs material colors directly into a vertex array (to avoid us repeatedly calling glColor) then we know we never need to flush the journal when material colors change.
2009-06-17 18:31:11 -04:00
return FALSE;
}
static void
handle_automatic_blend_enable (CoglMaterial *material)
{
material->flags &= ~COGL_MATERIAL_FLAG_ENABLE_BLEND;
if (_cogl_material_needs_blending_enabled (material, NULL))
[Cogl] Fixes automatic handling of the GL blend enable state. Bug #1460 - Handling of flags in cogl_material_set_color Cogl automatically enables/disables blending based on whether the source color has an alhpa < 1.0, or if any textures with an alpha component are in use, but it wasn't doing it quite right. At the same time I removed some of the dirty flags which on second thought are nothing more than micro-optimsations that only helped clutter the code. thanks to Owen Taylor for reporting the bug
2009-02-19 04:01:18 -05:00
material->flags |= COGL_MATERIAL_FLAG_ENABLE_BLEND;
}
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
/* If primitives have been logged in the journal referencing the current
* state of this material we need to flush the journal before we can
* modify it... */
static void
[material] avoid flushing the journal when just changing the color Whenever we modify a material we call _cogl_material_pre_change_notify which checks to see if the material is referenced by the journal and if so flushes if before we modify the material. Since the journal logs material colors directly into a vertex array (to avoid us repeatedly calling glColor) then we know we never need to flush the journal when material colors change.
2009-06-17 18:31:11 -04:00
_cogl_material_pre_change_notify (CoglMaterial *material,
gboolean only_color_change,
GLubyte *new_color)
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
{
[material] avoid flushing the journal when just changing the color Whenever we modify a material we call _cogl_material_pre_change_notify which checks to see if the material is referenced by the journal and if so flushes if before we modify the material. Since the journal logs material colors directly into a vertex array (to avoid us repeatedly calling glColor) then we know we never need to flush the journal when material colors change.
2009-06-17 18:31:11 -04:00
/* XXX: We don't usually need to flush the journal just due to color changes
* since material colors are logged in the journals vertex buffer. The
* exception is when the change in color enables or disables the need for
* blending. */
if (only_color_change)
{
gboolean will_need_blending =
_cogl_material_needs_blending_enabled (material, new_color);
if (will_need_blending ==
(material->flags & COGL_MATERIAL_FLAG_ENABLE_BLEND) ? TRUE : FALSE)
return;
}
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
if (material->journal_ref_count)
_cogl_journal_flush ();
}
[cogl-material] Adds a cogl_material_set_color function The other colors of a material; such as the ambient and diffuse color are only relevent when we can enable lighting. This adds a basic unlit color property. Later cogl_set_source_color can be integrated to either modify the color of the current source material, or maintain a special singlton CoglMaterial that is modified by calls to cogl_set_source_color and implicitly made current.
2008-12-23 18:35:49 -05:00
void
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
cogl_material_get_color (CoglHandle handle,
CoglColor *color)
{
CoglMaterial *material;
g_return_if_fail (cogl_is_material (handle));
material = _cogl_material_pointer_from_handle (handle);
[cogl material] optimize logging of material colors in the journal We now put the color of materials into the vertex array used by the journal instead of calling glColor() but the number of requests for the material color were quite expensive so we have changed the material color to internally be byte components instead of floats to avoid repeat conversions and added _cogl_material_get_colorubv as a fast-path for the journal to copy data into the vertex array.
2009-06-04 09:23:16 -04:00
cogl_color_set_from_4ub (color,
material->unlit[0],
material->unlit[1],
material->unlit[2],
material->unlit[3]);
}
/* This is used heavily by the cogl journal when logging quads */
void
_cogl_material_get_colorubv (CoglHandle handle,
guint8 *color)
{
CoglMaterial *material = _cogl_material_pointer_from_handle (handle);
memcpy (color, material->unlit, 4);
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
}
void
cogl_material_set_color (CoglHandle handle,
[cogl-material] Adds a cogl_material_set_color function The other colors of a material; such as the ambient and diffuse color are only relevent when we can enable lighting. This adds a basic unlit color property. Later cogl_set_source_color can be integrated to either modify the color of the current source material, or maintain a special singlton CoglMaterial that is modified by calls to cogl_set_source_color and implicitly made current.
2008-12-23 18:35:49 -05:00
const CoglColor *unlit_color)
{
CoglMaterial *material;
[cogl material] optimize logging of material colors in the journal We now put the color of materials into the vertex array used by the journal instead of calling glColor() but the number of requests for the material color were quite expensive so we have changed the material color to internally be byte components instead of floats to avoid repeat conversions and added _cogl_material_get_colorubv as a fast-path for the journal to copy data into the vertex array.
2009-06-04 09:23:16 -04:00
GLubyte unlit[4];
[cogl-material] Adds a cogl_material_set_color function The other colors of a material; such as the ambient and diffuse color are only relevent when we can enable lighting. This adds a basic unlit color property. Later cogl_set_source_color can be integrated to either modify the color of the current source material, or maintain a special singlton CoglMaterial that is modified by calls to cogl_set_source_color and implicitly made current.
2008-12-23 18:35:49 -05:00
g_return_if_fail (cogl_is_material (handle));
material = _cogl_material_pointer_from_handle (handle);
[cogl material] optimize logging of material colors in the journal We now put the color of materials into the vertex array used by the journal instead of calling glColor() but the number of requests for the material color were quite expensive so we have changed the material color to internally be byte components instead of floats to avoid repeat conversions and added _cogl_material_get_colorubv as a fast-path for the journal to copy data into the vertex array.
2009-06-04 09:23:16 -04:00
unlit[0] = cogl_color_get_red_byte (unlit_color);
unlit[1] = cogl_color_get_green_byte (unlit_color);
unlit[2] = cogl_color_get_blue_byte (unlit_color);
unlit[3] = cogl_color_get_alpha_byte (unlit_color);
[cogl-material] Adds a cogl_material_set_color function The other colors of a material; such as the ambient and diffuse color are only relevent when we can enable lighting. This adds a basic unlit color property. Later cogl_set_source_color can be integrated to either modify the color of the current source material, or maintain a special singlton CoglMaterial that is modified by calls to cogl_set_source_color and implicitly made current.
2008-12-23 18:35:49 -05:00
if (memcmp (unlit, material->unlit, sizeof (unlit)) == 0)
return;
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
/* possibly flush primitives referencing the current state... */
[material] avoid flushing the journal when just changing the color Whenever we modify a material we call _cogl_material_pre_change_notify which checks to see if the material is referenced by the journal and if so flushes if before we modify the material. Since the journal logs material colors directly into a vertex array (to avoid us repeatedly calling glColor) then we know we never need to flush the journal when material colors change.
2009-06-17 18:31:11 -04:00
_cogl_material_pre_change_notify (material, TRUE, unlit);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
[cogl-material] Adds a cogl_material_set_color function The other colors of a material; such as the ambient and diffuse color are only relevent when we can enable lighting. This adds a basic unlit color property. Later cogl_set_source_color can be integrated to either modify the color of the current source material, or maintain a special singlton CoglMaterial that is modified by calls to cogl_set_source_color and implicitly made current.
2008-12-23 18:35:49 -05:00
memcpy (material->unlit, unlit, sizeof (unlit));
[Cogl] Fixes automatic handling of the GL blend enable state. Bug #1460 - Handling of flags in cogl_material_set_color Cogl automatically enables/disables blending based on whether the source color has an alhpa < 1.0, or if any textures with an alpha component are in use, but it wasn't doing it quite right. At the same time I removed some of the dirty flags which on second thought are nothing more than micro-optimsations that only helped clutter the code. thanks to Owen Taylor for reporting the bug
2009-02-19 04:01:18 -05:00
material->flags &= ~COGL_MATERIAL_FLAG_DEFAULT_COLOR;
[cogl material] optimize logging of material colors in the journal We now put the color of materials into the vertex array used by the journal instead of calling glColor() but the number of requests for the material color were quite expensive so we have changed the material color to internally be byte components instead of floats to avoid repeat conversions and added _cogl_material_get_colorubv as a fast-path for the journal to copy data into the vertex array.
2009-06-04 09:23:16 -04:00
if (unlit[0] == 0xff &&
unlit[1] == 0xff &&
unlit[2] == 0xff &&
unlit[3] == 0xff)
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
material->flags |= COGL_MATERIAL_FLAG_DEFAULT_COLOR;
[Cogl] Fixes automatic handling of the GL blend enable state. Bug #1460 - Handling of flags in cogl_material_set_color Cogl automatically enables/disables blending based on whether the source color has an alhpa < 1.0, or if any textures with an alpha component are in use, but it wasn't doing it quite right. At the same time I removed some of the dirty flags which on second thought are nothing more than micro-optimsations that only helped clutter the code. thanks to Owen Taylor for reporting the bug
2009-02-19 04:01:18 -05:00
handle_automatic_blend_enable (material);
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
}
void
cogl_material_set_color4ub (CoglHandle handle,
guint8 red,
guint8 green,
guint8 blue,
guint8 alpha)
{
CoglColor color;
cogl_color_set_from_4ub (&color, red, green, blue, alpha);
cogl_material_set_color (handle, &color);
}
[cogl-material] Adds a cogl_material_set_color4f convenience function This is simply a wrapper around cogl_color_set_from_4f and cogl_material_set_color. We already had a prototype for this, it was an oversight that it wasn't already implemented.
2009-05-01 04:53:20 -04:00
void
cogl_material_set_color4f (CoglHandle handle,
float red,
float green,
float blue,
float alpha)
{
CoglColor color;
cogl_color_set_from_4f (&color, red, green, blue, alpha);
cogl_material_set_color (handle, &color);
}
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
void
cogl_material_get_ambient (CoglHandle handle,
CoglColor *ambient)
{
CoglMaterial *material;
g_return_if_fail (cogl_is_material (handle));
material = _cogl_material_pointer_from_handle (handle);
cogl_color_set_from_4f (ambient,
material->ambient[0],
material->ambient[1],
material->ambient[2],
material->ambient[3]);
[cogl-material] Adds a cogl_material_set_color function The other colors of a material; such as the ambient and diffuse color are only relevent when we can enable lighting. This adds a basic unlit color property. Later cogl_set_source_color can be integrated to either modify the color of the current source material, or maintain a special singlton CoglMaterial that is modified by calls to cogl_set_source_color and implicitly made current.
2008-12-23 18:35:49 -05:00
}
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
void
cogl_material_set_ambient (CoglHandle handle,
const CoglColor *ambient_color)
{
CoglMaterial *material;
GLfloat *ambient;
[doc] Hooks up cogl-material reference documentation Adds some more gtk-doc comments to cogl-material.h, and adds a new section to cogl-sections.txt
2008-12-22 11:19:49 -05:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
g_return_if_fail (cogl_is_material (handle));
[doc] Hooks up cogl-material reference documentation Adds some more gtk-doc comments to cogl-material.h, and adds a new section to cogl-sections.txt
2008-12-22 11:19:49 -05:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
material = _cogl_material_pointer_from_handle (handle);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
/* possibly flush primitives referencing the current state... */
[material] avoid flushing the journal when just changing the color Whenever we modify a material we call _cogl_material_pre_change_notify which checks to see if the material is referenced by the journal and if so flushes if before we modify the material. Since the journal logs material colors directly into a vertex array (to avoid us repeatedly calling glColor) then we know we never need to flush the journal when material colors change.
2009-06-17 18:31:11 -04:00
_cogl_material_pre_change_notify (material, FALSE, NULL);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
ambient = material->ambient;
ambient[0] = cogl_color_get_red_float (ambient_color);
ambient[1] = cogl_color_get_green_float (ambient_color);
ambient[2] = cogl_color_get_blue_float (ambient_color);
ambient[3] = cogl_color_get_alpha_float (ambient_color);
[cogl-material] Some improvements for how we sync CoglMaterial state with OpenGL This flattens the three functions: cogl_material_flush_gl_material_state, .._flush_gl_alpha_func and .._flush_gl_blend_func into one: cogl_flush_material_gl_state which doesn't takes a material handle. (the handle is instead taken from the context.) This has allows us to avoid re-submitting some state to OpenGL when the material has not been replaced. Note: Avoiding redundant state changes for material layers isn't dealt with in this patch.
2008-12-23 18:22:40 -05:00
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
material->flags &= ~COGL_MATERIAL_FLAG_DEFAULT_GL_MATERIAL;
}
void
cogl_material_get_diffuse (CoglHandle handle,
CoglColor *diffuse)
{
CoglMaterial *material;
g_return_if_fail (cogl_is_material (handle));
material = _cogl_material_pointer_from_handle (handle);
cogl_color_set_from_4f (diffuse,
material->diffuse[0],
material->diffuse[1],
material->diffuse[2],
material->diffuse[3]);
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
}
void
cogl_material_set_diffuse (CoglHandle handle,
const CoglColor *diffuse_color)
{
CoglMaterial *material;
GLfloat *diffuse;
[doc] Hooks up cogl-material reference documentation Adds some more gtk-doc comments to cogl-material.h, and adds a new section to cogl-sections.txt
2008-12-22 11:19:49 -05:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
g_return_if_fail (cogl_is_material (handle));
[doc] Hooks up cogl-material reference documentation Adds some more gtk-doc comments to cogl-material.h, and adds a new section to cogl-sections.txt
2008-12-22 11:19:49 -05:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
material = _cogl_material_pointer_from_handle (handle);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
/* possibly flush primitives referencing the current state... */
[material] avoid flushing the journal when just changing the color Whenever we modify a material we call _cogl_material_pre_change_notify which checks to see if the material is referenced by the journal and if so flushes if before we modify the material. Since the journal logs material colors directly into a vertex array (to avoid us repeatedly calling glColor) then we know we never need to flush the journal when material colors change.
2009-06-17 18:31:11 -04:00
_cogl_material_pre_change_notify (material, FALSE, NULL);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
diffuse = material->diffuse;
diffuse[0] = cogl_color_get_red_float (diffuse_color);
diffuse[1] = cogl_color_get_green_float (diffuse_color);
diffuse[2] = cogl_color_get_blue_float (diffuse_color);
diffuse[3] = cogl_color_get_alpha_float (diffuse_color);
[cogl-material] Some improvements for how we sync CoglMaterial state with OpenGL This flattens the three functions: cogl_material_flush_gl_material_state, .._flush_gl_alpha_func and .._flush_gl_blend_func into one: cogl_flush_material_gl_state which doesn't takes a material handle. (the handle is instead taken from the context.) This has allows us to avoid re-submitting some state to OpenGL when the material has not been replaced. Note: Avoiding redundant state changes for material layers isn't dealt with in this patch.
2008-12-23 18:22:40 -05:00
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
material->flags &= ~COGL_MATERIAL_FLAG_DEFAULT_GL_MATERIAL;
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
}
void
cogl_material_set_ambient_and_diffuse (CoglHandle handle,
const CoglColor *color)
{
cogl_material_set_ambient (handle, color);
cogl_material_set_diffuse (handle, color);
}
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
void
cogl_material_get_specular (CoglHandle handle,
CoglColor *specular)
{
CoglMaterial *material;
g_return_if_fail (cogl_is_material (handle));
material = _cogl_material_pointer_from_handle (handle);
cogl_color_set_from_4f (specular,
material->specular[0],
material->specular[1],
material->specular[2],
material->specular[3]);
}
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
void
cogl_material_set_specular (CoglHandle handle,
const CoglColor *specular_color)
{
CoglMaterial *material;
GLfloat *specular;
[doc] Hooks up cogl-material reference documentation Adds some more gtk-doc comments to cogl-material.h, and adds a new section to cogl-sections.txt
2008-12-22 11:19:49 -05:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
g_return_if_fail (cogl_is_material (handle));
[doc] Hooks up cogl-material reference documentation Adds some more gtk-doc comments to cogl-material.h, and adds a new section to cogl-sections.txt
2008-12-22 11:19:49 -05:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
material = _cogl_material_pointer_from_handle (handle);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
/* possibly flush primitives referencing the current state... */
[material] avoid flushing the journal when just changing the color Whenever we modify a material we call _cogl_material_pre_change_notify which checks to see if the material is referenced by the journal and if so flushes if before we modify the material. Since the journal logs material colors directly into a vertex array (to avoid us repeatedly calling glColor) then we know we never need to flush the journal when material colors change.
2009-06-17 18:31:11 -04:00
_cogl_material_pre_change_notify (material, FALSE, NULL);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
specular = material->specular;
specular[0] = cogl_color_get_red_float (specular_color);
specular[1] = cogl_color_get_green_float (specular_color);
specular[2] = cogl_color_get_blue_float (specular_color);
specular[3] = cogl_color_get_alpha_float (specular_color);
[cogl-material] Some improvements for how we sync CoglMaterial state with OpenGL This flattens the three functions: cogl_material_flush_gl_material_state, .._flush_gl_alpha_func and .._flush_gl_blend_func into one: cogl_flush_material_gl_state which doesn't takes a material handle. (the handle is instead taken from the context.) This has allows us to avoid re-submitting some state to OpenGL when the material has not been replaced. Note: Avoiding redundant state changes for material layers isn't dealt with in this patch.
2008-12-23 18:22:40 -05:00
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
material->flags &= ~COGL_MATERIAL_FLAG_DEFAULT_GL_MATERIAL;
}
float
cogl_material_get_shininess (CoglHandle handle)
{
CoglMaterial *material;
g_return_val_if_fail (cogl_is_material (handle), 0);
material = _cogl_material_pointer_from_handle (handle);
return material->shininess;
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
}
void
cogl_material_set_shininess (CoglHandle handle,
float shininess)
{
CoglMaterial *material;
[doc] Hooks up cogl-material reference documentation Adds some more gtk-doc comments to cogl-material.h, and adds a new section to cogl-sections.txt
2008-12-22 11:19:49 -05:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
g_return_if_fail (cogl_is_material (handle));
if (shininess < 0.0 || shininess > 1.0)
g_warning ("Out of range shininess %f supplied for material\n",
shininess);
[doc] Hooks up cogl-material reference documentation Adds some more gtk-doc comments to cogl-material.h, and adds a new section to cogl-sections.txt
2008-12-22 11:19:49 -05:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
material = _cogl_material_pointer_from_handle (handle);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
/* possibly flush primitives referencing the current state... */
[material] avoid flushing the journal when just changing the color Whenever we modify a material we call _cogl_material_pre_change_notify which checks to see if the material is referenced by the journal and if so flushes if before we modify the material. Since the journal logs material colors directly into a vertex array (to avoid us repeatedly calling glColor) then we know we never need to flush the journal when material colors change.
2009-06-17 18:31:11 -04:00
_cogl_material_pre_change_notify (material, FALSE, NULL);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
material->shininess = (GLfloat)shininess * 128.0;
[cogl-material] Some improvements for how we sync CoglMaterial state with OpenGL This flattens the three functions: cogl_material_flush_gl_material_state, .._flush_gl_alpha_func and .._flush_gl_blend_func into one: cogl_flush_material_gl_state which doesn't takes a material handle. (the handle is instead taken from the context.) This has allows us to avoid re-submitting some state to OpenGL when the material has not been replaced. Note: Avoiding redundant state changes for material layers isn't dealt with in this patch.
2008-12-23 18:22:40 -05:00
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
material->flags &= ~COGL_MATERIAL_FLAG_DEFAULT_GL_MATERIAL;
}
void
cogl_material_get_emission (CoglHandle handle,
CoglColor *emission)
{
CoglMaterial *material;
g_return_if_fail (cogl_is_material (handle));
material = _cogl_material_pointer_from_handle (handle);
cogl_color_set_from_4f (emission,
material->emission[0],
material->emission[1],
material->emission[2],
material->emission[3]);
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
}
void
cogl_material_set_emission (CoglHandle handle,
const CoglColor *emission_color)
{
CoglMaterial *material;
GLfloat *emission;
[doc] Hooks up cogl-material reference documentation Adds some more gtk-doc comments to cogl-material.h, and adds a new section to cogl-sections.txt
2008-12-22 11:19:49 -05:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
g_return_if_fail (cogl_is_material (handle));
[doc] Hooks up cogl-material reference documentation Adds some more gtk-doc comments to cogl-material.h, and adds a new section to cogl-sections.txt
2008-12-22 11:19:49 -05:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
material = _cogl_material_pointer_from_handle (handle);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
/* possibly flush primitives referencing the current state... */
[material] avoid flushing the journal when just changing the color Whenever we modify a material we call _cogl_material_pre_change_notify which checks to see if the material is referenced by the journal and if so flushes if before we modify the material. Since the journal logs material colors directly into a vertex array (to avoid us repeatedly calling glColor) then we know we never need to flush the journal when material colors change.
2009-06-17 18:31:11 -04:00
_cogl_material_pre_change_notify (material, FALSE, NULL);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
emission = material->emission;
emission[0] = cogl_color_get_red_float (emission_color);
emission[1] = cogl_color_get_green_float (emission_color);
emission[2] = cogl_color_get_blue_float (emission_color);
emission[3] = cogl_color_get_alpha_float (emission_color);
[doc] Hooks up cogl-material reference documentation Adds some more gtk-doc comments to cogl-material.h, and adds a new section to cogl-sections.txt
2008-12-22 11:19:49 -05:00
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
material->flags &= ~COGL_MATERIAL_FLAG_DEFAULT_GL_MATERIAL;
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
}
void
[doc] Hooks up cogl-material reference documentation Adds some more gtk-doc comments to cogl-material.h, and adds a new section to cogl-sections.txt
2008-12-22 11:19:49 -05:00
cogl_material_set_alpha_test_function (CoglHandle handle,
CoglMaterialAlphaFunc alpha_func,
float alpha_reference)
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
{
CoglMaterial *material;
g_return_if_fail (cogl_is_material (handle));
[doc] Hooks up cogl-material reference documentation Adds some more gtk-doc comments to cogl-material.h, and adds a new section to cogl-sections.txt
2008-12-22 11:19:49 -05:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
material = _cogl_material_pointer_from_handle (handle);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
/* possibly flush primitives referencing the current state... */
[material] avoid flushing the journal when just changing the color Whenever we modify a material we call _cogl_material_pre_change_notify which checks to see if the material is referenced by the journal and if so flushes if before we modify the material. Since the journal logs material colors directly into a vertex array (to avoid us repeatedly calling glColor) then we know we never need to flush the journal when material colors change.
2009-06-17 18:31:11 -04:00
_cogl_material_pre_change_notify (material, FALSE, NULL);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
material->alpha_func = alpha_func;
material->alpha_func_reference = (GLfloat)alpha_reference;
[cogl-material] Some improvements for how we sync CoglMaterial state with OpenGL This flattens the three functions: cogl_material_flush_gl_material_state, .._flush_gl_alpha_func and .._flush_gl_blend_func into one: cogl_flush_material_gl_state which doesn't takes a material handle. (the handle is instead taken from the context.) This has allows us to avoid re-submitting some state to OpenGL when the material has not been replaced. Note: Avoiding redundant state changes for material layers isn't dealt with in this patch.
2008-12-23 18:22:40 -05:00
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
material->flags &= ~COGL_MATERIAL_FLAG_DEFAULT_ALPHA_FUNC;
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
}
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
GLenum
arg_to_gl_blend_factor (CoglBlendStringArgument *arg)
{
if (arg->source.is_zero)
return GL_ZERO;
if (arg->factor.is_one)
return GL_ONE;
else if (arg->factor.is_src_alpha_saturate)
return GL_SRC_ALPHA_SATURATE;
else if (arg->factor.source.info->type ==
COGL_BLEND_STRING_COLOR_SOURCE_SRC_COLOR)
{
if (arg->factor.source.mask == COGL_BLEND_STRING_CHANNEL_MASK_RGB)
{
if (arg->factor.source.one_minus)
return GL_ONE_MINUS_SRC_COLOR;
else
return GL_SRC_COLOR;
}
else
{
if (arg->factor.source.one_minus)
return GL_ONE_MINUS_SRC_ALPHA;
else
return GL_SRC_ALPHA;
}
}
else if (arg->factor.source.info->type ==
COGL_BLEND_STRING_COLOR_SOURCE_DST_COLOR)
{
if (arg->factor.source.mask == COGL_BLEND_STRING_CHANNEL_MASK_RGB)
{
if (arg->factor.source.one_minus)
return GL_ONE_MINUS_DST_COLOR;
else
return GL_DST_COLOR;
}
else
{
if (arg->factor.source.one_minus)
return GL_ONE_MINUS_DST_ALPHA;
else
return GL_DST_ALPHA;
}
}
#ifndef HAVE_COGL_GLES
else if (arg->factor.source.info->type ==
COGL_BLEND_STRING_COLOR_SOURCE_CONSTANT)
{
if (arg->factor.source.mask == COGL_BLEND_STRING_CHANNEL_MASK_RGB)
{
if (arg->factor.source.one_minus)
return GL_ONE_MINUS_CONSTANT_COLOR;
else
return GL_CONSTANT_COLOR;
}
else
{
if (arg->factor.source.one_minus)
return GL_ONE_MINUS_CONSTANT_ALPHA;
else
return GL_CONSTANT_ALPHA;
}
}
#endif
g_warning ("Unable to determine valid blend factor from blend string\n");
return GL_ONE;
}
void
setup_blend_state (CoglBlendStringStatement *statement,
GLenum *blend_equation,
[cogl-material] Removes all the API made redundant by the blend strings API This removes the following API: cogl_material_set_blend_factors cogl_material_set_layer_combine_function cogl_material_set_layer_combine_arg_src cogl_material_set_layer_combine_arg_op These were rather awkward to use, so since it's expected very few people are using them at this point and it should be straight forward to switch over to blend strings, the API is being removed before we release Clutter 1.0.
2009-05-23 11:23:00 -04:00
GLint *blend_src_factor,
GLint *blend_dst_factor)
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
{
#ifndef HAVE_COGL_GLES
switch (statement->function->type)
{
case COGL_BLEND_STRING_FUNCTION_ADD:
*blend_equation = GL_FUNC_ADD;
break;
/* TODO - add more */
default:
g_warning ("Unsupported blend function given");
*blend_equation = GL_FUNC_ADD;
}
#endif
*blend_src_factor = arg_to_gl_blend_factor (&statement->args[0]);
*blend_dst_factor = arg_to_gl_blend_factor (&statement->args[1]);
}
gboolean
cogl_material_set_blend (CoglHandle handle,
const char *blend_description,
GError **error)
{
CoglMaterial *material;
CoglBlendStringStatement statements[2];
CoglBlendStringStatement split[2];
CoglBlendStringStatement *rgb;
CoglBlendStringStatement *a;
On bad blend strings, print the error if not returning it It's very common that there's no reasonable fallback to do if the blend or combine string you set isn't supported. So, rather than requiring everybody to pass in a GError purely to catch syntax erorrs, automatically g_warning() if a parse error is encountered and @error is NULL. http://bugzilla.openedhand.com/show_bug.cgi?id=1642 Signed-off-by: Robert Bragg <robert@linux.intel.com>
2009-06-08 09:26:57 -04:00
GError *internal_error = NULL;
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
int count;
g_return_val_if_fail (cogl_is_material (handle), FALSE);
material = _cogl_material_pointer_from_handle (handle);
count =
_cogl_blend_string_compile (blend_description,
COGL_BLEND_STRING_CONTEXT_BLENDING,
statements,
On bad blend strings, print the error if not returning it It's very common that there's no reasonable fallback to do if the blend or combine string you set isn't supported. So, rather than requiring everybody to pass in a GError purely to catch syntax erorrs, automatically g_warning() if a parse error is encountered and @error is NULL. http://bugzilla.openedhand.com/show_bug.cgi?id=1642 Signed-off-by: Robert Bragg <robert@linux.intel.com>
2009-06-08 09:26:57 -04:00
&internal_error);
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
if (!count)
On bad blend strings, print the error if not returning it It's very common that there's no reasonable fallback to do if the blend or combine string you set isn't supported. So, rather than requiring everybody to pass in a GError purely to catch syntax erorrs, automatically g_warning() if a parse error is encountered and @error is NULL. http://bugzilla.openedhand.com/show_bug.cgi?id=1642 Signed-off-by: Robert Bragg <robert@linux.intel.com>
2009-06-08 09:26:57 -04:00
{
if (error)
g_propagate_error (error, internal_error);
else
{
g_warning ("Cannot compile blend description: %s\n",
internal_error->message);
g_error_free (internal_error);
}
return FALSE;
}
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
if (statements[0].mask == COGL_BLEND_STRING_CHANNEL_MASK_RGBA)
{
_cogl_blend_string_split_rgba_statement (statements,
&split[0], &split[1]);
rgb = &split[0];
a = &split[1];
}
else
{
rgb = &statements[0];
a = &statements[1];
}
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
/* possibly flush primitives referencing the current state... */
[material] avoid flushing the journal when just changing the color Whenever we modify a material we call _cogl_material_pre_change_notify which checks to see if the material is referenced by the journal and if so flushes if before we modify the material. Since the journal logs material colors directly into a vertex array (to avoid us repeatedly calling glColor) then we know we never need to flush the journal when material colors change.
2009-06-17 18:31:11 -04:00
_cogl_material_pre_change_notify (material, FALSE, NULL);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
#ifndef HAVE_COGL_GLES
setup_blend_state (rgb,
&material->blend_equation_rgb,
&material->blend_src_factor_rgb,
&material->blend_dst_factor_rgb);
setup_blend_state (a,
&material->blend_equation_alpha,
&material->blend_src_factor_alpha,
&material->blend_dst_factor_alpha);
#else
setup_blend_state (rgb,
NULL,
&material->blend_src_factor_rgb,
&material->blend_dst_factor_rgb);
#endif
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
material->flags &= ~COGL_MATERIAL_FLAG_DEFAULT_BLEND;
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
return TRUE;
}
void
cogl_material_set_blend_constant (CoglHandle handle,
CoglColor *constant_color)
{
#ifndef HAVE_COGL_GLES
CoglMaterial *material;
GLfloat *constant;
g_return_if_fail (cogl_is_material (handle));
material = _cogl_material_pointer_from_handle (handle);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
/* possibly flush primitives referencing the current state... */
[material] avoid flushing the journal when just changing the color Whenever we modify a material we call _cogl_material_pre_change_notify which checks to see if the material is referenced by the journal and if so flushes if before we modify the material. Since the journal logs material colors directly into a vertex array (to avoid us repeatedly calling glColor) then we know we never need to flush the journal when material colors change.
2009-06-17 18:31:11 -04:00
_cogl_material_pre_change_notify (material, FALSE, NULL);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
constant = material->blend_constant;
constant[0] = cogl_color_get_red_float (constant_color);
constant[1] = cogl_color_get_green_float (constant_color);
constant[2] = cogl_color_get_blue_float (constant_color);
constant[3] = cogl_color_get_alpha_float (constant_color);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
material->flags &= ~COGL_MATERIAL_FLAG_DEFAULT_BLEND;
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
#endif
}
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
/* Asserts that a layer corresponding to the given index exists. If no
* match is found, then a new empty layer is added.
*/
static CoglMaterialLayer *
_cogl_material_get_layer (CoglMaterial *material,
Fallout from cogl-material merge When enabling the maintainer CFLAGS the compiler got very angry at the code that has been merged.
2009-01-27 11:02:04 -05:00
gint index_,
gboolean create_if_not_found)
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
{
CoglMaterialLayer *layer;
GList *tmp;
CoglHandle layer_handle;
for (tmp = material->layers; tmp != NULL; tmp = tmp->next)
{
layer =
_cogl_material_layer_pointer_from_handle ((CoglHandle)tmp->data);
Fallout from cogl-material merge When enabling the maintainer CFLAGS the compiler got very angry at the code that has been merged.
2009-01-27 11:02:04 -05:00
if (layer->index == index_)
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
return layer;
/* The layers are always sorted, so at this point we know this layer
* doesn't exist */
Fallout from cogl-material merge When enabling the maintainer CFLAGS the compiler got very angry at the code that has been merged.
2009-01-27 11:02:04 -05:00
if (layer->index > index_)
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
break;
}
/* NB: if we now insert a new layer before tmp, that will maintain order.
*/
if (!create_if_not_found)
return NULL;
[material] avoid flushing the journal when just changing the color Whenever we modify a material we call _cogl_material_pre_change_notify which checks to see if the material is referenced by the journal and if so flushes if before we modify the material. Since the journal logs material colors directly into a vertex array (to avoid us repeatedly calling glColor) then we know we never need to flush the journal when material colors change.
2009-06-17 18:31:11 -04:00
/* possibly flush primitives referencing the current state... */
_cogl_material_pre_change_notify (material, FALSE, NULL);
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
layer = g_new0 (CoglMaterialLayer, 1);
[cogl-handle] Optimize how we define cogl handles The cogl_is_* functions were showing up quite high on profiles due to iterating through arrays of cogl handles. This does away with all the handle arrays and implements a simple struct inheritance scheme. All cogl objects now add a CoglHandleObject _parent; member to their main structures. The base object includes 2 members a.t.m; a ref_count, and a klass pointer. The klass in turn gives you a type and virtual function for freeing objects of that type. Each handle type has a _cogl_##handle_type##_get_type () function automatically defined which returns a GQuark of the handle type, so now implementing the cogl_is_* funcs is just a case of comparing with obj->klass->type. Another outcome of the re-work is that cogl_handle_{ref,unref} are also much more efficient, and no longer need extending for each handle type added to cogl. The cogl_##handle_type##_{ref,unref} functions are now deprecated and are no longer used internally to Clutter or Cogl. Potentially we can remove them completely before 1.0.
2009-04-01 12:16:44 -04:00
layer_handle = _cogl_material_layer_handle_new (layer);
Fallout from cogl-material merge When enabling the maintainer CFLAGS the compiler got very angry at the code that has been merged.
2009-01-27 11:02:04 -05:00
layer->index = index_;
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
layer->flags = COGL_MATERIAL_LAYER_FLAG_DEFAULT_COMBINE;
[cogl] Move the texture filters to be a property of the material layer The texture filters are now a property of the material layer rather than the texture object. Whenever a texture is painted with a material it sets the filters on all of the GL textures in the Cogl texture. The filter is cached so that it won't be changed unnecessarily. The automatic mipmap generation has changed so that the mipmaps are only generated when the texture is painted instead of every time the data changes. Changing the texture sets a flag to mark that the mipmaps are dirty. This works better if the FBO extension is available because we can use glGenerateMipmap. If the extension is not available it will temporarily enable automatic mipmap generation and reupload the first pixel of each slice. This requires tracking the data for the first pixel. The COGL_TEXTURE_AUTO_MIPMAP flag has been replaced with COGL_TEXTURE_NO_AUTO_MIPMAP so that it will default to auto-mipmapping. The mipmap generation is now effectively free if you are not using a mipmap filter mode so you would only want to disable it if you had some special reason to generate your own mipmaps. ClutterTexture no longer has to store its own copy of the filter mode. Instead it stores it in the material and the property is directly set and read from that. This fixes problems with the filters getting out of sync when a cogl handle is set on the texture directly. It also avoids the mess of having to rerealize the texture if the filter quality changes to HIGH because Cogl will take of generating the mipmaps if needed.
2009-06-04 11:04:57 -04:00
layer->mag_filter = COGL_MATERIAL_FILTER_LINEAR;
layer->min_filter = COGL_MATERIAL_FILTER_LINEAR;
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
layer->texture = COGL_INVALID_HANDLE;
[doc] Hooks up cogl-material reference documentation Adds some more gtk-doc comments to cogl-material.h, and adds a new section to cogl-sections.txt
2008-12-22 11:19:49 -05:00
/* Choose the same default combine mode as OpenGL:
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
* MODULATE(PREVIOUS[RGBA],TEXTURE[RGBA]) */
[cogl-material] Removes all the API made redundant by the blend strings API This removes the following API: cogl_material_set_blend_factors cogl_material_set_layer_combine_function cogl_material_set_layer_combine_arg_src cogl_material_set_layer_combine_arg_op These were rather awkward to use, so since it's expected very few people are using them at this point and it should be straight forward to switch over to blend strings, the API is being removed before we release Clutter 1.0.
2009-05-23 11:23:00 -04:00
layer->texture_combine_rgb_func = GL_MODULATE;
layer->texture_combine_rgb_src[0] = GL_PREVIOUS;
layer->texture_combine_rgb_src[1] = GL_TEXTURE;
layer->texture_combine_rgb_op[0] = GL_SRC_COLOR;
layer->texture_combine_rgb_op[1] = GL_SRC_COLOR;
layer->texture_combine_alpha_func = GL_MODULATE;
layer->texture_combine_alpha_src[0] = GL_PREVIOUS;
layer->texture_combine_alpha_src[1] = GL_TEXTURE;
layer->texture_combine_alpha_op[0] = GL_SRC_ALPHA;
layer->texture_combine_alpha_op[1] = GL_SRC_ALPHA;
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
cogl_matrix_init_identity (&layer->matrix);
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
/* Note: see comment after for() loop above */
material->layers =
g_list_insert_before (material->layers, tmp, layer_handle);
return layer;
}
void
cogl_material_set_layer (CoglHandle material_handle,
gint layer_index,
CoglHandle texture_handle)
{
CoglMaterial *material;
CoglMaterialLayer *layer;
g_return_if_fail (cogl_is_material (material_handle));
[cogl-material] Allow setting a layer with an invalid texture handle It was previously possible to create a material layer with no texture by setting some property on it such as the matrix. However it was not possible to get back to that state without removing the layer and recreating it. It is useful to be able to remove the texture to free resources without forgetting the state of the layer so we can put a different texture in later.
2009-06-03 10:22:42 -04:00
g_return_if_fail (texture_handle == COGL_INVALID_HANDLE
|| cogl_is_texture (texture_handle));
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
material = _cogl_material_pointer_from_handle (material_handle);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
layer = _cogl_material_get_layer (material_handle, layer_index, TRUE);
[doc] Hooks up cogl-material reference documentation Adds some more gtk-doc comments to cogl-material.h, and adds a new section to cogl-sections.txt
2008-12-22 11:19:49 -05:00
[cogl] cogl_material_set_layer does nothing if resetting the same texture This avoids dirtying the layer, and should avoid some uneeded state changes
2009-04-04 14:21:22 -04:00
if (texture_handle == layer->texture)
return;
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
/* possibly flush primitives referencing the current state... */
[material] avoid flushing the journal when just changing the color Whenever we modify a material we call _cogl_material_pre_change_notify which checks to see if the material is referenced by the journal and if so flushes if before we modify the material. Since the journal logs material colors directly into a vertex array (to avoid us repeatedly calling glColor) then we know we never need to flush the journal when material colors change.
2009-06-17 18:31:11 -04:00
_cogl_material_pre_change_notify (material, FALSE, NULL);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
material->n_layers = g_list_length (material->layers);
if (material->n_layers >= CGL_MAX_COMBINED_TEXTURE_IMAGE_UNITS)
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
{
if (!(material->flags & COGL_MATERIAL_FLAG_SHOWN_SAMPLER_WARNING))
{
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
g_warning ("Your hardware does not have enough texture samplers"
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
"to handle this many texture layers");
material->flags |= COGL_MATERIAL_FLAG_SHOWN_SAMPLER_WARNING;
}
/* Note: We always make a best effort attempt to display as many
* layers as possible, so this isn't an _error_ */
/* Note: in the future we may support enabling/disabling layers
* too, so it may become valid to add more than
* MAX_COMBINED_TEXTURE_IMAGE_UNITS layers. */
}
[cogl-material] Allow setting a layer with an invalid texture handle It was previously possible to create a material layer with no texture by setting some property on it such as the matrix. However it was not possible to get back to that state without removing the layer and recreating it. It is useful to be able to remove the texture to free resources without forgetting the state of the layer so we can put a different texture in later.
2009-06-03 10:22:42 -04:00
if (texture_handle)
cogl_handle_ref (texture_handle);
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
if (layer->texture)
[cogl-handle] Optimize how we define cogl handles The cogl_is_* functions were showing up quite high on profiles due to iterating through arrays of cogl handles. This does away with all the handle arrays and implements a simple struct inheritance scheme. All cogl objects now add a CoglHandleObject _parent; member to their main structures. The base object includes 2 members a.t.m; a ref_count, and a klass pointer. The klass in turn gives you a type and virtual function for freeing objects of that type. Each handle type has a _cogl_##handle_type##_get_type () function automatically defined which returns a GQuark of the handle type, so now implementing the cogl_is_* funcs is just a case of comparing with obj->klass->type. Another outcome of the re-work is that cogl_handle_{ref,unref} are also much more efficient, and no longer need extending for each handle type added to cogl. The cogl_##handle_type##_{ref,unref} functions are now deprecated and are no longer used internally to Clutter or Cogl. Potentially we can remove them completely before 1.0.
2009-04-01 12:16:44 -04:00
cogl_handle_unref (layer->texture);
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
layer->texture = texture_handle;
[Cogl] Fixes automatic handling of the GL blend enable state. Bug #1460 - Handling of flags in cogl_material_set_color Cogl automatically enables/disables blending based on whether the source color has an alhpa < 1.0, or if any textures with an alpha component are in use, but it wasn't doing it quite right. At the same time I removed some of the dirty flags which on second thought are nothing more than micro-optimsations that only helped clutter the code. thanks to Owen Taylor for reporting the bug
2009-02-19 04:01:18 -05:00
handle_automatic_blend_enable (material);
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
layer->flags |= COGL_MATERIAL_LAYER_FLAG_DIRTY;
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
}
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
static void
setup_texture_combine_state (CoglBlendStringStatement *statement,
[cogl-material] Removes all the API made redundant by the blend strings API This removes the following API: cogl_material_set_blend_factors cogl_material_set_layer_combine_function cogl_material_set_layer_combine_arg_src cogl_material_set_layer_combine_arg_op These were rather awkward to use, so since it's expected very few people are using them at this point and it should be straight forward to switch over to blend strings, the API is being removed before we release Clutter 1.0.
2009-05-23 11:23:00 -04:00
GLint *texture_combine_func,
GLint *texture_combine_src,
GLint *texture_combine_op)
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
{
int i;
switch (statement->function->type)
{
case COGL_BLEND_STRING_FUNCTION_AUTO_COMPOSITE:
*texture_combine_func = GL_MODULATE; /* FIXME */
break;
case COGL_BLEND_STRING_FUNCTION_REPLACE:
*texture_combine_func = GL_REPLACE;
break;
case COGL_BLEND_STRING_FUNCTION_MODULATE:
*texture_combine_func = GL_MODULATE;
break;
case COGL_BLEND_STRING_FUNCTION_ADD:
*texture_combine_func = GL_ADD;
break;
case COGL_BLEND_STRING_FUNCTION_ADD_SIGNED:
*texture_combine_func = GL_ADD_SIGNED;
break;
case COGL_BLEND_STRING_FUNCTION_INTERPOLATE:
*texture_combine_func = GL_INTERPOLATE;
break;
case COGL_BLEND_STRING_FUNCTION_SUBTRACT:
*texture_combine_func = GL_SUBTRACT;
break;
case COGL_BLEND_STRING_FUNCTION_DOT3_RGB:
*texture_combine_func = GL_DOT3_RGB;
break;
case COGL_BLEND_STRING_FUNCTION_DOT3_RGBA:
*texture_combine_func = GL_DOT3_RGBA;
break;
}
for (i = 0; i < statement->function->argc; i++)
{
CoglBlendStringArgument *arg = &statement->args[i];
switch (arg->source.info->type)
{
case COGL_BLEND_STRING_COLOR_SOURCE_CONSTANT:
texture_combine_src[i] = GL_CONSTANT;
break;
case COGL_BLEND_STRING_COLOR_SOURCE_TEXTURE:
texture_combine_src[i] = GL_TEXTURE;
break;
case COGL_BLEND_STRING_COLOR_SOURCE_TEXTURE_N:
texture_combine_src[i] =
GL_TEXTURE0 + arg->source.texture;
break;
case COGL_BLEND_STRING_COLOR_SOURCE_PRIMARY:
texture_combine_src[i] = GL_PRIMARY_COLOR;
break;
case COGL_BLEND_STRING_COLOR_SOURCE_PREVIOUS:
texture_combine_src[i] = GL_PREVIOUS;
break;
default:
g_warning ("Unexpected texture combine source");
texture_combine_src[i] = GL_TEXTURE;
}
if (arg->source.mask == COGL_BLEND_STRING_CHANNEL_MASK_RGB)
{
if (statement->args[i].source.one_minus)
texture_combine_op[i] = GL_ONE_MINUS_SRC_COLOR;
else
texture_combine_op[i] = GL_SRC_COLOR;
}
else
{
if (statement->args[i].source.one_minus)
texture_combine_op[i] = GL_ONE_MINUS_SRC_ALPHA;
else
texture_combine_op[i] = GL_SRC_ALPHA;
}
}
}
gboolean
cogl_material_set_layer_combine (CoglHandle handle,
gint layer_index,
const char *combine_description,
GError **error)
{
CoglMaterial *material;
CoglMaterialLayer *layer;
CoglBlendStringStatement statements[2];
CoglBlendStringStatement split[2];
CoglBlendStringStatement *rgb;
CoglBlendStringStatement *a;
On bad blend strings, print the error if not returning it It's very common that there's no reasonable fallback to do if the blend or combine string you set isn't supported. So, rather than requiring everybody to pass in a GError purely to catch syntax erorrs, automatically g_warning() if a parse error is encountered and @error is NULL. http://bugzilla.openedhand.com/show_bug.cgi?id=1642 Signed-off-by: Robert Bragg <robert@linux.intel.com>
2009-06-08 09:26:57 -04:00
GError *internal_error = NULL;
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
int count;
g_return_val_if_fail (cogl_is_material (handle), FALSE);
material = _cogl_material_pointer_from_handle (handle);
layer = _cogl_material_get_layer (material, layer_index, TRUE);
count =
_cogl_blend_string_compile (combine_description,
COGL_BLEND_STRING_CONTEXT_TEXTURE_COMBINE,
statements,
On bad blend strings, print the error if not returning it It's very common that there's no reasonable fallback to do if the blend or combine string you set isn't supported. So, rather than requiring everybody to pass in a GError purely to catch syntax erorrs, automatically g_warning() if a parse error is encountered and @error is NULL. http://bugzilla.openedhand.com/show_bug.cgi?id=1642 Signed-off-by: Robert Bragg <robert@linux.intel.com>
2009-06-08 09:26:57 -04:00
&internal_error);
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
if (!count)
On bad blend strings, print the error if not returning it It's very common that there's no reasonable fallback to do if the blend or combine string you set isn't supported. So, rather than requiring everybody to pass in a GError purely to catch syntax erorrs, automatically g_warning() if a parse error is encountered and @error is NULL. http://bugzilla.openedhand.com/show_bug.cgi?id=1642 Signed-off-by: Robert Bragg <robert@linux.intel.com>
2009-06-08 09:26:57 -04:00
{
if (error)
g_propagate_error (error, internal_error);
else
{
g_warning ("Cannot compile combine description: %s\n",
internal_error->message);
g_error_free (internal_error);
}
return FALSE;
}
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
if (statements[0].mask == COGL_BLEND_STRING_CHANNEL_MASK_RGBA)
{
_cogl_blend_string_split_rgba_statement (statements,
&split[0], &split[1]);
rgb = &split[0];
a = &split[1];
}
else
{
rgb = &statements[0];
a = &statements[1];
}
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
/* possibly flush primitives referencing the current state... */
[material] avoid flushing the journal when just changing the color Whenever we modify a material we call _cogl_material_pre_change_notify which checks to see if the material is referenced by the journal and if so flushes if before we modify the material. Since the journal logs material colors directly into a vertex array (to avoid us repeatedly calling glColor) then we know we never need to flush the journal when material colors change.
2009-06-17 18:31:11 -04:00
_cogl_material_pre_change_notify (material, FALSE, NULL);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
setup_texture_combine_state (rgb,
&layer->texture_combine_rgb_func,
layer->texture_combine_rgb_src,
layer->texture_combine_rgb_op);
setup_texture_combine_state (a,
&layer->texture_combine_alpha_func,
layer->texture_combine_alpha_src,
layer->texture_combine_alpha_op);
layer->flags |= COGL_MATERIAL_LAYER_FLAG_DIRTY;
layer->flags &= ~COGL_MATERIAL_LAYER_FLAG_DEFAULT_COMBINE;
return TRUE;
}
void
cogl_material_set_layer_combine_constant (CoglHandle handle,
gint layer_index,
CoglColor *constant_color)
{
CoglMaterial *material;
CoglMaterialLayer *layer;
GLfloat *constant;
g_return_if_fail (cogl_is_material (handle));
material = _cogl_material_pointer_from_handle (handle);
layer = _cogl_material_get_layer (material, layer_index, TRUE);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
/* possibly flush primitives referencing the current state... */
[material] avoid flushing the journal when just changing the color Whenever we modify a material we call _cogl_material_pre_change_notify which checks to see if the material is referenced by the journal and if so flushes if before we modify the material. Since the journal logs material colors directly into a vertex array (to avoid us repeatedly calling glColor) then we know we never need to flush the journal when material colors change.
2009-06-17 18:31:11 -04:00
_cogl_material_pre_change_notify (material, FALSE, NULL);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
constant = layer->texture_combine_constant;
constant[0] = cogl_color_get_red_float (constant_color);
constant[1] = cogl_color_get_green_float (constant_color);
constant[2] = cogl_color_get_blue_float (constant_color);
constant[3] = cogl_color_get_alpha_float (constant_color);
layer->flags |= COGL_MATERIAL_LAYER_FLAG_DIRTY;
layer->flags &= ~COGL_MATERIAL_LAYER_FLAG_DEFAULT_COMBINE;
}
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
void
cogl_material_set_layer_matrix (CoglHandle material_handle,
gint layer_index,
CoglMatrix *matrix)
{
CoglMaterial *material;
CoglMaterialLayer *layer;
[doc] Hooks up cogl-material reference documentation Adds some more gtk-doc comments to cogl-material.h, and adds a new section to cogl-sections.txt
2008-12-22 11:19:49 -05:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
g_return_if_fail (cogl_is_material (material_handle));
material = _cogl_material_pointer_from_handle (material_handle);
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
layer = _cogl_material_get_layer (material, layer_index, TRUE);
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
/* possibly flush primitives referencing the current state... */
[material] avoid flushing the journal when just changing the color Whenever we modify a material we call _cogl_material_pre_change_notify which checks to see if the material is referenced by the journal and if so flushes if before we modify the material. Since the journal logs material colors directly into a vertex array (to avoid us repeatedly calling glColor) then we know we never need to flush the journal when material colors change.
2009-06-17 18:31:11 -04:00
_cogl_material_pre_change_notify (material, FALSE, NULL);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
layer->matrix = *matrix;
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
layer->flags |= COGL_MATERIAL_LAYER_FLAG_DIRTY;
layer->flags |= COGL_MATERIAL_LAYER_FLAG_HAS_USER_MATRIX;
layer->flags &= ~COGL_MATERIAL_LAYER_FLAG_DEFAULT_COMBINE;
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
}
static void
_cogl_material_layer_free (CoglMaterialLayer *layer)
{
[cogl-material] make _cogl_material_layer_free check for an invalid texture handle It is valid in some situations to have a material layer with an invalid texture handle (e.g. if you setup a texture combine mode before setting the texture) and so _cogl_material_layer_free needs to check for a valid handle before attempting to unref it.
2009-04-29 14:49:09 -04:00
if (layer->texture != COGL_INVALID_HANDLE)
cogl_handle_unref (layer->texture);
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
g_free (layer);
}
void
cogl_material_remove_layer (CoglHandle material_handle,
gint layer_index)
{
CoglMaterial *material;
CoglMaterialLayer *layer;
GList *tmp;
[cogl-material] Be more carefull about flushing in cogl_material_remove_layer Previously we would call _cogl_material_pre_change_notify unconditionally, but now we wait until we really know we are removing a layer before notifying the change, which will require a journal flush. Since the convenience functions cogl_set_source_color4ub and cogl_set_source_texture share a single material, cogl_set_source_color4ub always calls cogl_material_remove_layer. Often this is a NOP though and shouldn't require a journal flush. This gets performance back to where it was before reverting the per-actor material commits.
2009-06-24 13:34:06 -04:00
gboolean notified_change = FALSE;
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
g_return_if_fail (cogl_is_material (material_handle));
material = _cogl_material_pointer_from_handle (material_handle);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
for (tmp = material->layers; tmp != NULL; tmp = tmp->next)
{
layer = tmp->data;
if (layer->index == layer_index)
{
Fallout from cogl-material merge When enabling the maintainer CFLAGS the compiler got very angry at the code that has been merged.
2009-01-27 11:02:04 -05:00
CoglHandle handle = (CoglHandle) layer;
[cogl-material] Be more carefull about flushing in cogl_material_remove_layer Previously we would call _cogl_material_pre_change_notify unconditionally, but now we wait until we really know we are removing a layer before notifying the change, which will require a journal flush. Since the convenience functions cogl_set_source_color4ub and cogl_set_source_texture share a single material, cogl_set_source_color4ub always calls cogl_material_remove_layer. Often this is a NOP though and shouldn't require a journal flush. This gets performance back to where it was before reverting the per-actor material commits.
2009-06-24 13:34:06 -04:00
/* possibly flush primitives referencing the current state... */
if (!notified_change)
{
_cogl_material_pre_change_notify (material, FALSE, NULL);
notified_change = TRUE;
}
[cogl-handle] Optimize how we define cogl handles The cogl_is_* functions were showing up quite high on profiles due to iterating through arrays of cogl handles. This does away with all the handle arrays and implements a simple struct inheritance scheme. All cogl objects now add a CoglHandleObject _parent; member to their main structures. The base object includes 2 members a.t.m; a ref_count, and a klass pointer. The klass in turn gives you a type and virtual function for freeing objects of that type. Each handle type has a _cogl_##handle_type##_get_type () function automatically defined which returns a GQuark of the handle type, so now implementing the cogl_is_* funcs is just a case of comparing with obj->klass->type. Another outcome of the re-work is that cogl_handle_{ref,unref} are also much more efficient, and no longer need extending for each handle type added to cogl. The cogl_##handle_type##_{ref,unref} functions are now deprecated and are no longer used internally to Clutter or Cogl. Potentially we can remove them completely before 1.0.
2009-04-01 12:16:44 -04:00
cogl_handle_unref (handle);
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
material->layers = g_list_remove (material->layers, layer);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
material->n_layers--;
[Cogl] Fixes automatic handling of the GL blend enable state. Bug #1460 - Handling of flags in cogl_material_set_color Cogl automatically enables/disables blending based on whether the source color has an alhpa < 1.0, or if any textures with an alpha component are in use, but it wasn't doing it quite right. At the same time I removed some of the dirty flags which on second thought are nothing more than micro-optimsations that only helped clutter the code. thanks to Owen Taylor for reporting the bug
2009-02-19 04:01:18 -05:00
break;
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
}
}
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
[Cogl] Fixes automatic handling of the GL blend enable state. Bug #1460 - Handling of flags in cogl_material_set_color Cogl automatically enables/disables blending based on whether the source color has an alhpa < 1.0, or if any textures with an alpha component are in use, but it wasn't doing it quite right. At the same time I removed some of the dirty flags which on second thought are nothing more than micro-optimsations that only helped clutter the code. thanks to Owen Taylor for reporting the bug
2009-02-19 04:01:18 -05:00
handle_automatic_blend_enable (material);
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
}
/* XXX: This API is hopfully just a stop-gap solution. Ideally cogl_enable
* will be replaced. */
gulong
[material] Reduce the material API in preperation for releasing Clutter 1.0 There were a number of functions intended to support creating of new primitives using materials, but at this point they aren't used outside of Cogl so until someone has a usecase and we can get feedback on this API, it's being removed before we release Clutter 1.0.
2009-05-23 12:42:10 -04:00
_cogl_material_get_cogl_enable_flags (CoglHandle material_handle)
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
{
CoglMaterial *material;
gulong enable_flags = 0;
_COGL_GET_CONTEXT (ctx, 0);
g_return_val_if_fail (cogl_is_material (material_handle), 0);
material = _cogl_material_pointer_from_handle (material_handle);
/* Enable blending if the geometry has an associated alpha color,
* or the material wants blending enabled. */
[Cogl] Fixes automatic handling of the GL blend enable state. Bug #1460 - Handling of flags in cogl_material_set_color Cogl automatically enables/disables blending based on whether the source color has an alhpa < 1.0, or if any textures with an alpha component are in use, but it wasn't doing it quite right. At the same time I removed some of the dirty flags which on second thought are nothing more than micro-optimsations that only helped clutter the code. thanks to Owen Taylor for reporting the bug
2009-02-19 04:01:18 -05:00
if (material->flags & COGL_MATERIAL_FLAG_ENABLE_BLEND)
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
enable_flags |= COGL_ENABLE_BLEND;
return enable_flags;
}
/* It's a bit out of the ordinary to return a const GList *, but it's
* probably sensible to try and avoid list manipulation for every
* primitive emitted in a scene, every frame.
*
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
* Alternatively; we could either add a _foreach function, or maybe
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
* a function that gets a passed a buffer (that may be stack allocated)
* by the caller.
*/
const GList *
cogl_material_get_layers (CoglHandle material_handle)
{
CoglMaterial *material;
g_return_val_if_fail (cogl_is_material (material_handle), NULL);
material = _cogl_material_pointer_from_handle (material_handle);
return material->layers;
}
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
int
cogl_material_get_n_layers (CoglHandle material_handle)
{
CoglMaterial *material;
g_return_val_if_fail (cogl_is_material (material_handle), 0);
material = _cogl_material_pointer_from_handle (material_handle);
return material->n_layers;
}
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
CoglMaterialLayerType
cogl_material_layer_get_type (CoglHandle layer_handle)
{
return COGL_MATERIAL_LAYER_TYPE_TEXTURE;
}
CoglHandle
cogl_material_layer_get_texture (CoglHandle layer_handle)
{
CoglMaterialLayer *layer;
g_return_val_if_fail (cogl_is_material_layer (layer_handle),
COGL_INVALID_HANDLE);
layer = _cogl_material_layer_pointer_from_handle (layer_handle);
return layer->texture;
}
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
gulong
[material] Reduce the material API in preperation for releasing Clutter 1.0 There were a number of functions intended to support creating of new primitives using materials, but at this point they aren't used outside of Cogl so until someone has a usecase and we can get feedback on this API, it's being removed before we release Clutter 1.0.
2009-05-23 12:42:10 -04:00
_cogl_material_layer_get_flags (CoglHandle layer_handle)
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
{
CoglMaterialLayer *layer;
g_return_val_if_fail (cogl_is_material_layer (layer_handle), 0);
layer = _cogl_material_layer_pointer_from_handle (layer_handle);
return layer->flags & COGL_MATERIAL_LAYER_FLAG_HAS_USER_MATRIX;
}
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
static guint
[cogl-material] Removes all the API made redundant by the blend strings API This removes the following API: cogl_material_set_blend_factors cogl_material_set_layer_combine_function cogl_material_set_layer_combine_arg_src cogl_material_set_layer_combine_arg_op These were rather awkward to use, so since it's expected very few people are using them at this point and it should be straight forward to switch over to blend strings, the API is being removed before we release Clutter 1.0.
2009-05-23 11:23:00 -04:00
get_n_args_for_combine_func (GLint func)
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
{
switch (func)
{
[cogl-material] Removes all the API made redundant by the blend strings API This removes the following API: cogl_material_set_blend_factors cogl_material_set_layer_combine_function cogl_material_set_layer_combine_arg_src cogl_material_set_layer_combine_arg_op These were rather awkward to use, so since it's expected very few people are using them at this point and it should be straight forward to switch over to blend strings, the API is being removed before we release Clutter 1.0.
2009-05-23 11:23:00 -04:00
case GL_REPLACE:
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
return 1;
[cogl-material] Removes all the API made redundant by the blend strings API This removes the following API: cogl_material_set_blend_factors cogl_material_set_layer_combine_function cogl_material_set_layer_combine_arg_src cogl_material_set_layer_combine_arg_op These were rather awkward to use, so since it's expected very few people are using them at this point and it should be straight forward to switch over to blend strings, the API is being removed before we release Clutter 1.0.
2009-05-23 11:23:00 -04:00
case GL_MODULATE:
case GL_ADD:
case GL_ADD_SIGNED:
case GL_SUBTRACT:
case GL_DOT3_RGB:
case GL_DOT3_RGBA:
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
return 2;
[cogl-material] Removes all the API made redundant by the blend strings API This removes the following API: cogl_material_set_blend_factors cogl_material_set_layer_combine_function cogl_material_set_layer_combine_arg_src cogl_material_set_layer_combine_arg_op These were rather awkward to use, so since it's expected very few people are using them at this point and it should be straight forward to switch over to blend strings, the API is being removed before we release Clutter 1.0.
2009-05-23 11:23:00 -04:00
case GL_INTERPOLATE:
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
return 3;
}
return 0;
}
[cogl] Move the texture filters to be a property of the material layer The texture filters are now a property of the material layer rather than the texture object. Whenever a texture is painted with a material it sets the filters on all of the GL textures in the Cogl texture. The filter is cached so that it won't be changed unnecessarily. The automatic mipmap generation has changed so that the mipmaps are only generated when the texture is painted instead of every time the data changes. Changing the texture sets a flag to mark that the mipmaps are dirty. This works better if the FBO extension is available because we can use glGenerateMipmap. If the extension is not available it will temporarily enable automatic mipmap generation and reupload the first pixel of each slice. This requires tracking the data for the first pixel. The COGL_TEXTURE_AUTO_MIPMAP flag has been replaced with COGL_TEXTURE_NO_AUTO_MIPMAP so that it will default to auto-mipmapping. The mipmap generation is now effectively free if you are not using a mipmap filter mode so you would only want to disable it if you had some special reason to generate your own mipmaps. ClutterTexture no longer has to store its own copy of the filter mode. Instead it stores it in the material and the property is directly set and read from that. This fixes problems with the filters getting out of sync when a cogl handle is set on the texture directly. It also avoids the mess of having to rerealize the texture if the filter quality changes to HIGH because Cogl will take of generating the mipmaps if needed.
2009-06-04 11:04:57 -04:00
static gboolean
is_mipmap_filter (CoglMaterialFilter filter)
{
return (filter == COGL_MATERIAL_FILTER_NEAREST_MIPMAP_NEAREST
|| filter == COGL_MATERIAL_FILTER_LINEAR_MIPMAP_NEAREST
|| filter == COGL_MATERIAL_FILTER_NEAREST_MIPMAP_LINEAR
|| filter == COGL_MATERIAL_FILTER_LINEAR_MIPMAP_LINEAR);
}
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
static void
_cogl_material_layer_flush_gl_sampler_state (CoglMaterialLayer *layer,
CoglLayerInfo *gl_layer_info)
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
{
int n_rgb_func_args;
int n_alpha_func_args;
[cogl-material] Fixes some dirty flag checks Flushing material layers wasn't clearing the right dirty flag and some of the tests used to avoid re-submitting GL state weren't complete.
2009-02-06 11:05:08 -05:00
#ifndef DISABLE_MATERIAL_CACHE
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
if (!(gl_layer_info &&
gl_layer_info->flags & COGL_MATERIAL_LAYER_FLAG_DEFAULT_COMBINE &&
layer->flags & COGL_MATERIAL_LAYER_FLAG_DEFAULT_COMBINE))
[cogl-material] Fixes some dirty flag checks Flushing material layers wasn't clearing the right dirty flag and some of the tests used to avoid re-submitting GL state weren't complete.
2009-02-06 11:05:08 -05:00
#endif
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
{
GE (glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE));
/* Set the combiner functions... */
GE (glTexEnvi (GL_TEXTURE_ENV,
GL_COMBINE_RGB,
layer->texture_combine_rgb_func));
GE (glTexEnvi (GL_TEXTURE_ENV,
GL_COMBINE_ALPHA,
layer->texture_combine_alpha_func));
/*
* Setup the function arguments...
*/
/* For the RGB components... */
n_rgb_func_args =
get_n_args_for_combine_func (layer->texture_combine_rgb_func);
GE (glTexEnvi (GL_TEXTURE_ENV, GL_SRC0_RGB,
layer->texture_combine_rgb_src[0]));
GE (glTexEnvi (GL_TEXTURE_ENV, GL_OPERAND0_RGB,
layer->texture_combine_rgb_op[0]));
if (n_rgb_func_args > 1)
{
GE (glTexEnvi (GL_TEXTURE_ENV, GL_SRC1_RGB,
layer->texture_combine_rgb_src[1]));
GE (glTexEnvi (GL_TEXTURE_ENV, GL_OPERAND1_RGB,
layer->texture_combine_rgb_op[1]));
}
if (n_rgb_func_args > 2)
{
GE (glTexEnvi (GL_TEXTURE_ENV, GL_SRC2_RGB,
layer->texture_combine_rgb_src[2]));
GE (glTexEnvi (GL_TEXTURE_ENV, GL_OPERAND2_RGB,
layer->texture_combine_rgb_op[2]));
}
/* For the Alpha component */
n_alpha_func_args =
get_n_args_for_combine_func (layer->texture_combine_alpha_func);
GE (glTexEnvi (GL_TEXTURE_ENV, GL_SRC0_ALPHA,
layer->texture_combine_alpha_src[0]));
GE (glTexEnvi (GL_TEXTURE_ENV, GL_OPERAND0_ALPHA,
layer->texture_combine_alpha_op[0]));
if (n_alpha_func_args > 1)
{
GE (glTexEnvi (GL_TEXTURE_ENV, GL_SRC1_ALPHA,
layer->texture_combine_alpha_src[1]));
GE (glTexEnvi (GL_TEXTURE_ENV, GL_OPERAND1_ALPHA,
layer->texture_combine_alpha_op[1]));
}
if (n_alpha_func_args > 2)
{
GE (glTexEnvi (GL_TEXTURE_ENV, GL_SRC2_ALPHA,
layer->texture_combine_alpha_src[2]));
GE (glTexEnvi (GL_TEXTURE_ENV, GL_OPERAND2_ALPHA,
layer->texture_combine_alpha_op[2]));
}
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
GE (glTexEnvfv (GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR,
layer->texture_combine_constant));
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
}
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
[cogl-material] Fixes some dirty flag checks Flushing material layers wasn't clearing the right dirty flag and some of the tests used to avoid re-submitting GL state weren't complete.
2009-02-06 11:05:08 -05:00
#ifndef DISABLE_MATERIAL_CACHE
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
if (gl_layer_info &&
(gl_layer_info->flags & COGL_MATERIAL_LAYER_FLAG_HAS_USER_MATRIX ||
layer->flags & COGL_MATERIAL_LAYER_FLAG_HAS_USER_MATRIX))
[cogl-material] Fixes some dirty flag checks Flushing material layers wasn't clearing the right dirty flag and some of the tests used to avoid re-submitting GL state weren't complete.
2009-02-06 11:05:08 -05:00
#endif
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
{
Virtualize GL matrix operations and use a client-side matrix when GL is indirect This is useful because sometimes we need to get the current matrix, which is too expensive when indirect rendering. In addition, this virtualization makes it easier to clean up the API in the future.
2009-02-24 13:51:25 -05:00
_cogl_set_current_matrix (COGL_MATRIX_TEXTURE);
_cogl_current_matrix_load (&layer->matrix);
_cogl_set_current_matrix (COGL_MATRIX_MODELVIEW);
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
}
}
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
Remove gtk-doc annotation The _cogl_material_flush_layers_gl_state() function is static, so it should not have a gtk-doc annotation.
2009-01-28 06:55:19 -05:00
/*
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
* _cogl_material_flush_layers_gl_state:
* @fallback_mask: is a bitmask of the material layers that need to be
* replaced with the default, fallback textures. The fallback textures are
* fully transparent textures so they hopefully wont contribute to the
* texture combining.
*
* The intention of fallbacks is to try and preserve
* the number of layers the user is expecting so that texture coordinates
* they gave will mostly still correspond to the textures they intended, and
* have a fighting chance of looking close to their originally intended
* result.
*
* @disable_mask: is a bitmask of the material layers that will simply have
* texturing disabled. It's only really intended for disabling all layers
* > X; i.e. we'd expect to see a contiguous run of 0 starting from the LSB
* and at some point the remaining bits flip to 1. It might work to disable
* arbitrary layers; though I'm not sure a.t.m how OpenGL would take to
* that.
*
* The intention of the disable_mask is for emitting geometry when the user
* hasn't supplied enough texture coordinates for all the layers and it's
* not possible to auto generate default texture coordinates for those
* layers.
*
* @layer0_override_texture: forcibly tells us to bind this GL texture name for
* layer 0 instead of plucking the gl_texture from the CoglTexture of layer
* 0.
*
* The intention of this is for any geometry that supports sliced textures.
* The code will can iterate each of the slices and re-flush the material
* forcing the GL texture of each slice in turn.
*
* XXX: It might also help if we could specify a texture matrix for code
* dealing with slicing that would be multiplied with the users own matrix.
*
* Normaly texture coords in the range [0, 1] refer to the extents of the
* texture, but when your GL texture represents a slice of the real texture
* (from the users POV) then a texture matrix would be a neat way of
* transforming the mapping for each slice.
*
* Currently for textured rectangles we manually calculate the texture
* coords for each slice based on the users given coords, but this solution
* isn't ideal, and can't be used with CoglVertexBuffers.
*/
static void
_cogl_material_flush_layers_gl_state (CoglMaterial *material,
guint32 fallback_mask,
guint32 disable_mask,
GLuint layer0_override_texture)
{
GList *tmp;
int i;
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
for (tmp = material->layers, i = 0; tmp != NULL; tmp = tmp->next, i++)
{
CoglHandle layer_handle = (CoglHandle)tmp->data;
CoglMaterialLayer *layer =
_cogl_material_layer_pointer_from_handle (layer_handle);
CoglLayerInfo *gl_layer_info = NULL;
CoglLayerInfo new_gl_layer_info;
Updates GLES1 support for CoglMaterial This updates cogl/gles in line with the integration of CoglMaterial throughout Cogl that has been done for cogl/gl. Note: This is still buggy, but at least it builds again and test-actors works. Some GLES2 specific changes were made, but these haven't been tested yet.
2009-01-26 06:07:35 -05:00
CoglHandle tex_handle;
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
GLuint gl_texture;
GLenum gl_target;
Updates GLES1 support for CoglMaterial This updates cogl/gles in line with the integration of CoglMaterial throughout Cogl that has been done for cogl/gl. Note: This is still buggy, but at least it builds again and test-actors works. Some GLES2 specific changes were made, but these haven't been tested yet.
2009-01-26 06:07:35 -05:00
#ifdef HAVE_COGL_GLES2
GLenum gl_internal_format;
#endif
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
new_gl_layer_info.layer0_overridden =
layer0_override_texture ? TRUE : FALSE;
new_gl_layer_info.fallback =
(fallback_mask & (1<<i)) ? TRUE : FALSE;
new_gl_layer_info.disabled =
(disable_mask & (1<<i)) ? TRUE : FALSE;
Updates GLES1 support for CoglMaterial This updates cogl/gles in line with the integration of CoglMaterial throughout Cogl that has been done for cogl/gl. Note: This is still buggy, but at least it builds again and test-actors works. Some GLES2 specific changes were made, but these haven't been tested yet.
2009-01-26 06:07:35 -05:00
tex_handle = layer->texture;
cogl_texture_get_gl_texture (tex_handle, &gl_texture, &gl_target);
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
if (new_gl_layer_info.layer0_overridden)
gl_texture = layer0_override_texture;
else if (new_gl_layer_info.fallback)
{
if (gl_target == GL_TEXTURE_2D)
tex_handle = ctx->default_gl_texture_2d_tex;
Updates GLES1 support for CoglMaterial This updates cogl/gles in line with the integration of CoglMaterial throughout Cogl that has been done for cogl/gl. Note: This is still buggy, but at least it builds again and test-actors works. Some GLES2 specific changes were made, but these haven't been tested yet.
2009-01-26 06:07:35 -05:00
#ifdef HAVE_COGL_GL
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
else if (gl_target == GL_TEXTURE_RECTANGLE_ARB)
tex_handle = ctx->default_gl_texture_rect_tex;
Updates GLES1 support for CoglMaterial This updates cogl/gles in line with the integration of CoglMaterial throughout Cogl that has been done for cogl/gl. Note: This is still buggy, but at least it builds again and test-actors works. Some GLES2 specific changes were made, but these haven't been tested yet.
2009-01-26 06:07:35 -05:00
#endif
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
else
{
g_warning ("We don't have a default texture we can use to fill "
"in for an invalid material layer, since it was "
"using an unsupported texture target ");
/* might get away with this... */
tex_handle = ctx->default_gl_texture_2d_tex;
}
cogl_texture_get_gl_texture (tex_handle, &gl_texture, NULL);
}
Updates GLES1 support for CoglMaterial This updates cogl/gles in line with the integration of CoglMaterial throughout Cogl that has been done for cogl/gl. Note: This is still buggy, but at least it builds again and test-actors works. Some GLES2 specific changes were made, but these haven't been tested yet.
2009-01-26 06:07:35 -05:00
#ifdef HAVE_COGL_GLES2
{
CoglTexture *tex =
_cogl_texture_pointer_from_handle (tex_handle);
gl_internal_format = tex->gl_intformat;
}
#endif
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
GE (glActiveTexture (GL_TEXTURE0 + i));
[cogl] Move the texture filters to be a property of the material layer The texture filters are now a property of the material layer rather than the texture object. Whenever a texture is painted with a material it sets the filters on all of the GL textures in the Cogl texture. The filter is cached so that it won't be changed unnecessarily. The automatic mipmap generation has changed so that the mipmaps are only generated when the texture is painted instead of every time the data changes. Changing the texture sets a flag to mark that the mipmaps are dirty. This works better if the FBO extension is available because we can use glGenerateMipmap. If the extension is not available it will temporarily enable automatic mipmap generation and reupload the first pixel of each slice. This requires tracking the data for the first pixel. The COGL_TEXTURE_AUTO_MIPMAP flag has been replaced with COGL_TEXTURE_NO_AUTO_MIPMAP so that it will default to auto-mipmapping. The mipmap generation is now effectively free if you are not using a mipmap filter mode so you would only want to disable it if you had some special reason to generate your own mipmaps. ClutterTexture no longer has to store its own copy of the filter mode. Instead it stores it in the material and the property is directly set and read from that. This fixes problems with the filters getting out of sync when a cogl handle is set on the texture directly. It also avoids the mess of having to rerealize the texture if the filter quality changes to HIGH because Cogl will take of generating the mipmaps if needed.
2009-06-04 11:04:57 -04:00
_cogl_texture_set_filters (layer->texture,
layer->min_filter,
layer->mag_filter);
if (is_mipmap_filter (layer->min_filter)
|| is_mipmap_filter (layer->mag_filter))
_cogl_texture_ensure_mipmaps (layer->texture);
[cogl-material] Always bind the new texture handle Cogl previously tried to cache the currently bound texture when drawing through the material API to avoid excessive GL calls. However, a few other places in Cogl and Clutter rebind the texture as well so this can cause problems. This was causing shaped windows to fail in Mutter because ClutterGLXTexturePixmap was binding a different texture to update it while the second texture unit was still active which meant the mask texture would not be selected when the shaped window was drawn subsequent times. Ideally we would fix this by providing a wrapper around glBindTexture which would affect the cached value. The cache would also have to be cleared if a selected texture was deleted.
2009-02-02 09:51:52 -05:00
/* FIXME: We could be more clever here and only bind the texture
if it is different from gl_layer_info->gl_texture to avoid
redundant GL calls. However a few other places in Cogl and
Clutter call glBindTexture such as ClutterGLXTexturePixmap so
we'd need to ensure they affect the cache. Also deleting a
texture should clear it from the cache in case a new texture
is generated with the same number */
Updates GLES1 support for CoglMaterial This updates cogl/gles in line with the integration of CoglMaterial throughout Cogl that has been done for cogl/gl. Note: This is still buggy, but at least it builds again and test-actors works. Some GLES2 specific changes were made, but these haven't been tested yet.
2009-01-26 06:07:35 -05:00
#ifdef HAVE_COGL_GLES2
[cogl-material] Always bind the new texture handle Cogl previously tried to cache the currently bound texture when drawing through the material API to avoid excessive GL calls. However, a few other places in Cogl and Clutter rebind the texture as well so this can cause problems. This was causing shaped windows to fail in Mutter because ClutterGLXTexturePixmap was binding a different texture to update it while the second texture unit was still active which meant the mask texture would not be selected when the shaped window was drawn subsequent times. Ideally we would fix this by providing a wrapper around glBindTexture which would affect the cached value. The cache would also have to be cleared if a selected texture was deleted.
2009-02-02 09:51:52 -05:00
cogl_gles2_wrapper_bind_texture (gl_target,
gl_texture,
gl_internal_format);
Updates GLES1 support for CoglMaterial This updates cogl/gles in line with the integration of CoglMaterial throughout Cogl that has been done for cogl/gl. Note: This is still buggy, but at least it builds again and test-actors works. Some GLES2 specific changes were made, but these haven't been tested yet.
2009-01-26 06:07:35 -05:00
#else
[cogl-material] Always bind the new texture handle Cogl previously tried to cache the currently bound texture when drawing through the material API to avoid excessive GL calls. However, a few other places in Cogl and Clutter rebind the texture as well so this can cause problems. This was causing shaped windows to fail in Mutter because ClutterGLXTexturePixmap was binding a different texture to update it while the second texture unit was still active which meant the mask texture would not be selected when the shaped window was drawn subsequent times. Ideally we would fix this by providing a wrapper around glBindTexture which would affect the cached value. The cache would also have to be cleared if a selected texture was deleted.
2009-02-02 09:51:52 -05:00
GE (glBindTexture (gl_target, gl_texture));
Updates GLES1 support for CoglMaterial This updates cogl/gles in line with the integration of CoglMaterial throughout Cogl that has been done for cogl/gl. Note: This is still buggy, but at least it builds again and test-actors works. Some GLES2 specific changes were made, but these haven't been tested yet.
2009-01-26 06:07:35 -05:00
#endif
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
[cogl-material] Always glBindTexture when flushing material state Bug #1457 - Creating a new texture messes up the cogl material state cache; reported by Neil Roberts We still don't have caching of bound texture state so we always have to re-bind the texture when flushing the GL state of any material layers.
2009-02-19 04:20:20 -05:00
/* XXX: Once we add caching for glBindTexture state, these
* checks should be moved back up to the top of the loop!
*/
if (i < ctx->current_layers->len)
{
gl_layer_info =
&g_array_index (ctx->current_layers, CoglLayerInfo, i);
#ifndef DISABLE_MATERIAL_CACHE
if (gl_layer_info->handle == layer_handle &&
!(layer->flags & COGL_MATERIAL_LAYER_FLAG_DIRTY) &&
!(gl_layer_info->layer0_overridden ||
new_gl_layer_info.layer0_overridden) &&
(gl_layer_info->fallback
== new_gl_layer_info.fallback) &&
(gl_layer_info->disabled
== new_gl_layer_info.disabled))
{
continue;
}
#endif
}
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
/* Disable the previous target if it was different */
[cogl-material] Fixes some dirty flag checks Flushing material layers wasn't clearing the right dirty flag and some of the tests used to avoid re-submitting GL state weren't complete.
2009-02-06 11:05:08 -05:00
#ifndef DISABLE_MATERIAL_CACHE
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
if (gl_layer_info &&
gl_layer_info->gl_target != gl_target &&
!gl_layer_info->disabled)
[cogl-material] Fixes some dirty flag checks Flushing material layers wasn't clearing the right dirty flag and some of the tests used to avoid re-submitting GL state weren't complete.
2009-02-06 11:05:08 -05:00
{
GE (glDisable (gl_layer_info->gl_target));
}
#else
if (gl_layer_info)
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
GE (glDisable (gl_layer_info->gl_target));
[cogl-material] Fixes some dirty flag checks Flushing material layers wasn't clearing the right dirty flag and some of the tests used to avoid re-submitting GL state weren't complete.
2009-02-06 11:05:08 -05:00
#endif
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
/* Enable/Disable the new target */
if (!new_gl_layer_info.disabled)
{
[cogl-material] Fixes some dirty flag checks Flushing material layers wasn't clearing the right dirty flag and some of the tests used to avoid re-submitting GL state weren't complete.
2009-02-06 11:05:08 -05:00
#ifndef DISABLE_MATERIAL_CACHE
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
if (!(gl_layer_info &&
gl_layer_info->gl_target == gl_target &&
!gl_layer_info->disabled))
[cogl-material] Fixes some dirty flag checks Flushing material layers wasn't clearing the right dirty flag and some of the tests used to avoid re-submitting GL state weren't complete.
2009-02-06 11:05:08 -05:00
#endif
{
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
/* XXX: Debug: Comment this out to disable all texturing: */
#if 1
[cogl-material] Fixes some dirty flag checks Flushing material layers wasn't clearing the right dirty flag and some of the tests used to avoid re-submitting GL state weren't complete.
2009-02-06 11:05:08 -05:00
GE (glEnable (gl_target));
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
#endif
[cogl-material] Fixes some dirty flag checks Flushing material layers wasn't clearing the right dirty flag and some of the tests used to avoid re-submitting GL state weren't complete.
2009-02-06 11:05:08 -05:00
}
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
}
else
{
[cogl-material] Fixes some dirty flag checks Flushing material layers wasn't clearing the right dirty flag and some of the tests used to avoid re-submitting GL state weren't complete.
2009-02-06 11:05:08 -05:00
#ifndef DISABLE_MATERIAL_CACHE
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
if (!(gl_layer_info &&
gl_layer_info->gl_target == gl_target &&
gl_layer_info->disabled))
[cogl-material] Fixes some dirty flag checks Flushing material layers wasn't clearing the right dirty flag and some of the tests used to avoid re-submitting GL state weren't complete.
2009-02-06 11:05:08 -05:00
#endif
{
GE (glDisable (gl_target));
}
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
}
_cogl_material_layer_flush_gl_sampler_state (layer, gl_layer_info);
new_gl_layer_info.handle = layer_handle;
new_gl_layer_info.flags = layer->flags;
new_gl_layer_info.gl_target = gl_target;
new_gl_layer_info.gl_texture = gl_texture;
if (i < ctx->current_layers->len)
*gl_layer_info = new_gl_layer_info;
else
g_array_append_val (ctx->current_layers, new_gl_layer_info);
layer->flags &= ~COGL_MATERIAL_LAYER_FLAG_DIRTY;
if ((i+1) >= CGL_MAX_COMBINED_TEXTURE_IMAGE_UNITS)
break;
}
[doc] Hooks up cogl-material reference documentation Adds some more gtk-doc comments to cogl-material.h, and adds a new section to cogl-sections.txt
2008-12-22 11:19:49 -05:00
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
/* Disable additional texture units that may have previously been in use.. */
for (; i < ctx->current_layers->len; i++)
{
CoglLayerInfo *gl_layer_info =
&g_array_index (ctx->current_layers, CoglLayerInfo, i);
[cogl-material] Fixes some dirty flag checks Flushing material layers wasn't clearing the right dirty flag and some of the tests used to avoid re-submitting GL state weren't complete.
2009-02-06 11:05:08 -05:00
#ifndef DISABLE_MATERIAL_CACHE
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
if (!gl_layer_info->disabled)
[cogl-material] Fixes some dirty flag checks Flushing material layers wasn't clearing the right dirty flag and some of the tests used to avoid re-submitting GL state weren't complete.
2009-02-06 11:05:08 -05:00
#endif
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
{
GE (glActiveTexture (GL_TEXTURE0 + i));
GE (glDisable (gl_layer_info->gl_target));
gl_layer_info->disabled = TRUE;
}
}
}
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
static void
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
_cogl_material_flush_base_gl_state (CoglMaterial *material,
gboolean skip_gl_color)
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
/* XXX:
* Currently we only don't update state when the flags indicate that the
* current material uses the defaults, and the new material also uses the
* defaults, but we could do deeper comparisons of state. */
if (!skip_gl_color)
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
{
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
if (!(ctx->current_material_flags & COGL_MATERIAL_FLAG_DEFAULT_COLOR
&& material->flags & COGL_MATERIAL_FLAG_DEFAULT_COLOR) ||
/* Assume if we were previously told to skip the color, then
* the current color needs updating... */
ctx->current_material_flush_options.flags &
COGL_MATERIAL_FLUSH_SKIP_GL_COLOR)
{
[cogl material] optimize logging of material colors in the journal We now put the color of materials into the vertex array used by the journal instead of calling glColor() but the number of requests for the material color were quite expensive so we have changed the material color to internally be byte components instead of floats to avoid repeat conversions and added _cogl_material_get_colorubv as a fast-path for the journal to copy data into the vertex array.
2009-06-04 09:23:16 -04:00
GE (glColor4ub (material->unlit[0],
material->unlit[1],
material->unlit[2],
material->unlit[3]));
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
}
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
}
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
if (!(ctx->current_material_flags & COGL_MATERIAL_FLAG_DEFAULT_GL_MATERIAL
&& material->flags & COGL_MATERIAL_FLAG_DEFAULT_GL_MATERIAL))
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
{
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
/* FIXME - we only need to set these if lighting is enabled... */
GE (glMaterialfv (GL_FRONT_AND_BACK, GL_AMBIENT, material->ambient));
GE (glMaterialfv (GL_FRONT_AND_BACK, GL_DIFFUSE, material->diffuse));
GE (glMaterialfv (GL_FRONT_AND_BACK, GL_SPECULAR, material->specular));
GE (glMaterialfv (GL_FRONT_AND_BACK, GL_EMISSION, material->emission));
GE (glMaterialfv (GL_FRONT_AND_BACK, GL_SHININESS, &material->shininess));
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
}
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
if (!(ctx->current_material_flags & COGL_MATERIAL_FLAG_DEFAULT_ALPHA_FUNC
&& material->flags & COGL_MATERIAL_FLAG_DEFAULT_ALPHA_FUNC))
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
{
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
/* NB: Currently the Cogl defines are compatible with the GL ones: */
GE (glAlphaFunc (material->alpha_func, material->alpha_func_reference));
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
}
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
if (!(ctx->current_material_flags & COGL_MATERIAL_FLAG_DEFAULT_BLEND
&& material->flags & COGL_MATERIAL_FLAG_DEFAULT_BLEND))
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
{
[cogl-material] Support string based blending and layer combine descriptions Setting up layer combine functions and blend modes is very awkward to do programatically. This adds a parser for string based descriptions which are more consise and readable. E.g. a material layer combine function could now be given as: "RGBA = ADD (TEXTURE[A], PREVIOUS[RGB])" or "RGB = REPLACE (PREVIOUS)" "A = MODULATE (PREVIOUS, TEXTURE)" The simple syntax and grammar are only designed to expose standard fixed function hardware, more advanced combining must be done with shaders. This includes standalone documentation of blend strings covering the aspects that are common to blending and texture combining, and adds documentation with examples specific to the new cogl_material_set_blend() and cogl_material_layer_set_combine() functions. Note: The hope is to remove the now redundant bits of the material API before 1.0
2009-05-10 19:40:41 -04:00
#if defined (HAVE_COGL_GLES2)
gboolean have_blend_equation_seperate = TRUE;
#elif defined (HAVE_COGL_GL)
gboolean have_blend_equation_seperate = FALSE;
if (ctx->pf_glBlendEquationSeparate) /* Only GL 2.0 + */
have_blend_equation_seperate = TRUE;
#endif
#ifndef HAVE_COGL_GLES /* GLES 1 only has glBlendFunc */
if (material->blend_src_factor_rgb != material->blend_src_factor_alpha
|| (material->blend_src_factor_rgb !=
material->blend_src_factor_alpha))
{
if (have_blend_equation_seperate &&
material->blend_equation_rgb != material->blend_equation_alpha)
GE (glBlendEquationSeparate (material->blend_equation_rgb,
material->blend_equation_alpha));
else
GE (glBlendEquation (material->blend_equation_rgb));
GE (glBlendFuncSeparate (material->blend_src_factor_rgb,
material->blend_dst_factor_rgb,
material->blend_src_factor_alpha,
material->blend_dst_factor_alpha));
GE (glBlendColor (material->blend_constant[0],
material->blend_constant[1],
material->blend_constant[2],
material->blend_constant[3]));
}
else
#endif
GE (glBlendFunc (material->blend_src_factor_rgb,
material->blend_dst_factor_rgb));
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
}
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
}
void
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
_cogl_material_flush_gl_state (CoglHandle handle,
CoglMaterialFlushOptions *options)
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
{
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
CoglMaterial *material;
guint32 fallback_layers = 0;
guint32 disable_layers = 0;
GLuint layer0_override_texture = 0;
gboolean skip_gl_color = FALSE;
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
material = _cogl_material_pointer_from_handle (handle);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
if (options)
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
{
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
if (options->flags & COGL_MATERIAL_FLUSH_FALLBACK_MASK)
fallback_layers = options->fallback_layers;
if (options->flags & COGL_MATERIAL_FLUSH_DISABLE_MASK)
disable_layers = options->disable_layers;
if (options->flags & COGL_MATERIAL_FLUSH_LAYER0_OVERRIDE)
layer0_override_texture = options->layer0_override_texture;
if (options->flags & COGL_MATERIAL_FLUSH_SKIP_GL_COLOR)
skip_gl_color = TRUE;
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
}
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
_cogl_material_flush_base_gl_state (material,
skip_gl_color);
[cogl-material] Fixes some dirty flag checks Flushing material layers wasn't clearing the right dirty flag and some of the tests used to avoid re-submitting GL state weren't complete.
2009-02-06 11:05:08 -05:00
_cogl_material_flush_layers_gl_state (material,
fallback_layers,
disable_layers,
layer0_override_texture);
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
/* NB: we have to take a reference so that next time
* cogl_material_flush_gl_state is called, we can compare the incomming
* material pointer with ctx->current_material
*/
[cogl-handle] Optimize how we define cogl handles The cogl_is_* functions were showing up quite high on profiles due to iterating through arrays of cogl handles. This does away with all the handle arrays and implements a simple struct inheritance scheme. All cogl objects now add a CoglHandleObject _parent; member to their main structures. The base object includes 2 members a.t.m; a ref_count, and a klass pointer. The klass in turn gives you a type and virtual function for freeing objects of that type. Each handle type has a _cogl_##handle_type##_get_type () function automatically defined which returns a GQuark of the handle type, so now implementing the cogl_is_* funcs is just a case of comparing with obj->klass->type. Another outcome of the re-work is that cogl_handle_{ref,unref} are also much more efficient, and no longer need extending for each handle type added to cogl. The cogl_##handle_type##_{ref,unref} functions are now deprecated and are no longer used internally to Clutter or Cogl. Potentially we can remove them completely before 1.0.
2009-04-01 12:16:44 -04:00
cogl_handle_ref (handle);
if (ctx->current_material)
cogl_handle_unref (ctx->current_material);
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
ctx->current_material = handle;
ctx->current_material_flags = material->flags;
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
if (options)
ctx->current_material_flush_options = *options;
else
memset (&ctx->current_material_flush_options,
0, sizeof (CoglMaterialFlushOptions));
}
gboolean
_cogl_material_equal (CoglHandle material0_handle,
CoglMaterialFlushOptions *material0_flush_options,
CoglHandle material1_handle,
CoglMaterialFlushOptions *material1_flush_options,
CoglMaterialEqualFlags flags)
{
CoglMaterial *material0;
CoglMaterial *material1;
GList *l0, *l1;
[material] _cogl_material_equal: catch the simplest case of matching handles We were missing the simplest test of all: are the two CoglHandles equal and are the flush option flags for each material equal? This should improve batching for some common cases.
2009-06-17 18:31:40 -04:00
if (material0_handle == material1_handle &&
material0_flush_options->flags == material1_flush_options->flags)
return TRUE;
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
if (!(flags & COGL_MATERIAL_EQUAL_FLAGS_ASSERT_ALL_DEFAULTS))
{
g_critical ("FIXME: _cogl_material_equal doesn't yet support "
"deep comparisons of materials");
return FALSE;
}
/* Note: the following code is written with the assumption this
* constraint will go away*/
material0 = _cogl_material_pointer_from_handle (material0_handle);
material1 = _cogl_material_pointer_from_handle (material1_handle);
if (!((material0_flush_options->flags & COGL_MATERIAL_FLUSH_SKIP_GL_COLOR &&
material1_flush_options->flags & COGL_MATERIAL_FLUSH_SKIP_GL_COLOR)))
{
if ((material0->flags & COGL_MATERIAL_FLAG_DEFAULT_COLOR) !=
(material1->flags & COGL_MATERIAL_FLAG_DEFAULT_COLOR))
return FALSE;
else if (flags & COGL_MATERIAL_EQUAL_FLAGS_ASSERT_ALL_DEFAULTS &&
!(material0->flags & COGL_MATERIAL_FLAG_DEFAULT_COLOR))
return FALSE;
else if (!memcmp (material0->unlit, material1->unlit,
sizeof (material0->unlit)))
return FALSE;
}
if ((material0->flags & COGL_MATERIAL_FLAG_DEFAULT_GL_MATERIAL) !=
(material1->flags & COGL_MATERIAL_FLAG_DEFAULT_GL_MATERIAL))
return FALSE;
else if (flags & COGL_MATERIAL_EQUAL_FLAGS_ASSERT_ALL_DEFAULTS &&
!(material0->flags & COGL_MATERIAL_FLAG_DEFAULT_GL_MATERIAL))
return FALSE;
#if 0
else if (!_deep_are_gl_materials_equal ())
return FALSE;
#endif
if ((material0->flags & COGL_MATERIAL_FLAG_DEFAULT_ALPHA_FUNC) !=
(material1->flags & COGL_MATERIAL_FLAG_DEFAULT_ALPHA_FUNC))
return FALSE;
else if (flags & COGL_MATERIAL_EQUAL_FLAGS_ASSERT_ALL_DEFAULTS &&
!(material0->flags & COGL_MATERIAL_FLAG_DEFAULT_ALPHA_FUNC))
return FALSE;
#if 0
else if (!_deep_are_alpha_funcs_equal ())
return FALSE;
#endif
if ((material0->flags & COGL_MATERIAL_FLAG_ENABLE_BLEND) !=
(material1->flags & COGL_MATERIAL_FLAG_ENABLE_BLEND))
return FALSE;
/* XXX: potentially blending could be "enabled" but the blend mode
* could be equivalent to being disabled. */
if (material0->flags & COGL_MATERIAL_FLAG_ENABLE_BLEND)
{
if ((material0->flags & COGL_MATERIAL_FLAG_DEFAULT_BLEND) !=
(material1->flags & COGL_MATERIAL_FLAG_DEFAULT_BLEND))
return FALSE;
else if (flags & COGL_MATERIAL_EQUAL_FLAGS_ASSERT_ALL_DEFAULTS &&
!(material0->flags & COGL_MATERIAL_FLAG_DEFAULT_BLEND))
return FALSE;
#if 0
else if (!_deep_is_blend_equal ())
return FALSE;
#endif
}
if (material0_flush_options->fallback_layers !=
material1_flush_options->fallback_layers ||
material0_flush_options->disable_layers !=
material1_flush_options->disable_layers)
return FALSE;
l0 = material0->layers;
l1 = material1->layers;
while (l0 && l1)
{
CoglMaterialLayer *layer0;
CoglMaterialLayer *layer1;
if ((l0 == NULL && l1 != NULL) ||
(l1 == NULL && l0 != NULL))
return FALSE;
layer0 = l0->data;
layer1 = l1->data;
if (layer0->texture != layer1->texture)
return FALSE;
if ((layer0->flags & COGL_MATERIAL_LAYER_FLAG_DEFAULT_COMBINE) !=
(layer1->flags & COGL_MATERIAL_LAYER_FLAG_DEFAULT_COMBINE))
return FALSE;
else if (flags & COGL_MATERIAL_EQUAL_FLAGS_ASSERT_ALL_DEFAULTS &&
!(layer0->flags & COGL_MATERIAL_LAYER_FLAG_DEFAULT_COMBINE))
return FALSE;
#if 0
else if (!_deep_are_layer_combines_equal ())
return FALSE;
#endif
l0 = l0->next;
l1 = l1->next;
}
if ((l0 == NULL && l1 != NULL) ||
(l1 == NULL && l0 != NULL))
return FALSE;
return TRUE;
}
/* While a material is referenced by the Cogl journal we can not allow
* modifications, so this gives us a mechanism to track journal
* references separately */
CoglHandle
_cogl_material_journal_ref (CoglHandle material_handle)
{
CoglMaterial *material =
material = _cogl_material_pointer_from_handle (material_handle);
material->journal_ref_count++;
cogl_handle_ref (material_handle);
return material_handle;
}
void
_cogl_material_journal_unref (CoglHandle material_handle)
{
CoglMaterial *material =
material = _cogl_material_pointer_from_handle (material_handle);
material->journal_ref_count--;
cogl_handle_unref (material_handle);
Adds a CoglMaterial abstraction, which includes support for multi-texturing My previous work to provide muti-texturing support has been extended into a CoglMaterial abstraction that adds control over the texture combine functions (controlling how multiple texture layers are blended together), the gl blend function (used for blending the final primitive with the framebuffer), the alpha function (used to discard fragments based on their alpha channel), describing attributes such as a diffuse, ambient and specular color (for use with the standard OpenGL lighting model), and per layer rotations. (utilizing the new CoglMatrix utility API) For now the only way this abstraction is exposed is via a new cogl_material_rectangle function, that is similar to cogl_texture_rectangle but doesn't take a texture handle (the source material is pulled from the context), and the array of texture coordinates is extended to be able to supply coordinates for each layer. Note: this function doesn't support sliced textures; supporting sliced textures is a non trivial problem, considering the ability to rotate layers. Note: cogl_material_rectangle, has quite a few workarounds, for a number of other limitations within Cogl a.t.m. Note: The GLES1/2 multi-texturing support has yet to be updated to use the material abstraction.
2008-12-11 15:11:30 -05:00
}
[cogl-material] Some improvements for how we sync CoglMaterial state with OpenGL This flattens the three functions: cogl_material_flush_gl_material_state, .._flush_gl_alpha_func and .._flush_gl_blend_func into one: cogl_flush_material_gl_state which doesn't takes a material handle. (the handle is instead taken from the context.) This has allows us to avoid re-submitting some state to OpenGL when the material has not been replaced. Note: Avoiding redundant state changes for material layers isn't dealt with in this patch.
2008-12-23 18:22:40 -05:00
/* TODO: Should go in cogl.c, but that implies duplication which is also
* not ideal. */
void
cogl_set_source (CoglHandle material_handle)
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
g_return_if_fail (cogl_is_material (material_handle));
if (ctx->source_material == material_handle)
return;
[cogl-handle] Optimize how we define cogl handles The cogl_is_* functions were showing up quite high on profiles due to iterating through arrays of cogl handles. This does away with all the handle arrays and implements a simple struct inheritance scheme. All cogl objects now add a CoglHandleObject _parent; member to their main structures. The base object includes 2 members a.t.m; a ref_count, and a klass pointer. The klass in turn gives you a type and virtual function for freeing objects of that type. Each handle type has a _cogl_##handle_type##_get_type () function automatically defined which returns a GQuark of the handle type, so now implementing the cogl_is_* funcs is just a case of comparing with obj->klass->type. Another outcome of the re-work is that cogl_handle_{ref,unref} are also much more efficient, and no longer need extending for each handle type added to cogl. The cogl_##handle_type##_{ref,unref} functions are now deprecated and are no longer used internally to Clutter or Cogl. Potentially we can remove them completely before 1.0.
2009-04-01 12:16:44 -04:00
cogl_handle_ref (material_handle);
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
[cogl-material] Some improvements for how we sync CoglMaterial state with OpenGL This flattens the three functions: cogl_material_flush_gl_material_state, .._flush_gl_alpha_func and .._flush_gl_blend_func into one: cogl_flush_material_gl_state which doesn't takes a material handle. (the handle is instead taken from the context.) This has allows us to avoid re-submitting some state to OpenGL when the material has not been replaced. Note: Avoiding redundant state changes for material layers isn't dealt with in this patch.
2008-12-23 18:22:40 -05:00
if (ctx->source_material)
[cogl-handle] Optimize how we define cogl handles The cogl_is_* functions were showing up quite high on profiles due to iterating through arrays of cogl handles. This does away with all the handle arrays and implements a simple struct inheritance scheme. All cogl objects now add a CoglHandleObject _parent; member to their main structures. The base object includes 2 members a.t.m; a ref_count, and a klass pointer. The klass in turn gives you a type and virtual function for freeing objects of that type. Each handle type has a _cogl_##handle_type##_get_type () function automatically defined which returns a GQuark of the handle type, so now implementing the cogl_is_* funcs is just a case of comparing with obj->klass->type. Another outcome of the re-work is that cogl_handle_{ref,unref} are also much more efficient, and no longer need extending for each handle type added to cogl. The cogl_##handle_type##_{ref,unref} functions are now deprecated and are no longer used internally to Clutter or Cogl. Potentially we can remove them completely before 1.0.
2009-04-01 12:16:44 -04:00
cogl_handle_unref (ctx->source_material);
[cogl-material] Some improvements for how we sync CoglMaterial state with OpenGL This flattens the three functions: cogl_material_flush_gl_material_state, .._flush_gl_alpha_func and .._flush_gl_blend_func into one: cogl_flush_material_gl_state which doesn't takes a material handle. (the handle is instead taken from the context.) This has allows us to avoid re-submitting some state to OpenGL when the material has not been replaced. Note: Avoiding redundant state changes for material layers isn't dealt with in this patch.
2008-12-23 18:22:40 -05:00
ctx->source_material = material_handle;
}
/* TODO: add cogl_set_front_source (), and cogl_set_back_source () */
void
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
cogl_set_source_texture (CoglHandle texture_handle)
[cogl-material] Some improvements for how we sync CoglMaterial state with OpenGL This flattens the three functions: cogl_material_flush_gl_material_state, .._flush_gl_alpha_func and .._flush_gl_blend_func into one: cogl_flush_material_gl_state which doesn't takes a material handle. (the handle is instead taken from the context.) This has allows us to avoid re-submitting some state to OpenGL when the material has not been replaced. Note: Avoiding redundant state changes for material layers isn't dealt with in this patch.
2008-12-23 18:22:40 -05:00
{
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
CoglColor white;
[cogl-material] Some improvements for how we sync CoglMaterial state with OpenGL This flattens the three functions: cogl_material_flush_gl_material_state, .._flush_gl_alpha_func and .._flush_gl_blend_func into one: cogl_flush_material_gl_state which doesn't takes a material handle. (the handle is instead taken from the context.) This has allows us to avoid re-submitting some state to OpenGL when the material has not been replaced. Note: Avoiding redundant state changes for material layers isn't dealt with in this patch.
2008-12-23 18:22:40 -05:00
[cogl] Don't allow calling cogl_set_source_texture with an INVALID_HANDLE Although the underlying materials should allow layers with INVALID_HANDLES it shouldn't be necissary to expose that via cogl_set_source_texture() and it's easier to resolve a warning/crash here than odd artefacts/crashes later in the pipeline.
2009-06-08 07:18:34 -04:00
g_return_if_fail (texture_handle != COGL_INVALID_HANDLE);
Fully integrates CoglMaterial throughout the rest of Cogl This glues CoglMaterial in as the fundamental way that Cogl describes how to fill in geometry. It adds cogl_set_source (), which is used to set the material which will be used by all subsequent drawing functions It adds cogl_set_source_texture as a convenience for setting up a default material with a single texture layer, and cogl_set_source_color is now also a convenience for setting up a material with a solid fill. "drawing functions" include, cogl_rectangle, cogl_texture_rectangle, cogl_texture_multiple_rectangles, cogl_texture_polygon (though the cogl_texture_* funcs have been renamed; see below for details), cogl_path_fill/stroke and cogl_vertex_buffer_draw*. cogl_texture_rectangle, cogl_texture_multiple_rectangles and cogl_texture_polygon no longer take a texture handle; instead the current source material is referenced. The functions have also been renamed to: cogl_rectangle_with_texture_coords, cogl_rectangles_with_texture_coords and cogl_polygon respectivly. Most code that previously did: cogl_texture_rectangle (tex_handle, x, y,...); needs to be changed to now do: cogl_set_source_texture (tex_handle); cogl_rectangle_with_texture_coords (x, y,....); In the less likely case where you were blending your source texture with a color like: cogl_set_source_color4ub (r,g,b,a); /* where r,g,b,a isn't just white */ cogl_texture_rectangle (tex_handle, x, y,...); you will need your own material to do that: mat = cogl_material_new (); cogl_material_set_color4ub (r,g,b,a); cogl_material_set_layer (mat, 0, tex_handle)); cogl_set_source_material (mat); Code that uses the texture coordinates, 0, 0, 1, 1 don't need to use cog_rectangle_with_texure_coords since these are the coordinates that cogl_rectangle will use. For cogl_texture_polygon; as well as dropping the texture handle, the n_vertices and vertices arguments were transposed for consistency. So code previously written as: cogl_texture_polygon (tex_handle, 3, verts, TRUE); need to be written as: cogl_set_source_texture (tex_handle); cogl_polygon (verts, 3, TRUE); All of the unit tests have been updated to now use the material API and test-cogl-material has been renamed to test-cogl-multitexture since any textured quad is now technically a test of CoglMaterial but this test specifically creates a material with multiple texture layers. Note: The GLES backend has not been updated yet; that will be done in a following commit.
2009-01-23 11:15:40 -05:00
cogl_material_set_layer (ctx->default_material, 0, texture_handle);
cogl_color_set_from_4ub (&white, 0xff, 0xff, 0xff, 0xff);
cogl_material_set_color (ctx->default_material, &white);
cogl_set_source (ctx->default_material);
[cogl-material] Some improvements for how we sync CoglMaterial state with OpenGL This flattens the three functions: cogl_material_flush_gl_material_state, .._flush_gl_alpha_func and .._flush_gl_blend_func into one: cogl_flush_material_gl_state which doesn't takes a material handle. (the handle is instead taken from the context.) This has allows us to avoid re-submitting some state to OpenGL when the material has not been replaced. Note: Avoiding redundant state changes for material layers isn't dealt with in this patch.
2008-12-23 18:22:40 -05:00
}
[cogl] Move the texture filters to be a property of the material layer The texture filters are now a property of the material layer rather than the texture object. Whenever a texture is painted with a material it sets the filters on all of the GL textures in the Cogl texture. The filter is cached so that it won't be changed unnecessarily. The automatic mipmap generation has changed so that the mipmaps are only generated when the texture is painted instead of every time the data changes. Changing the texture sets a flag to mark that the mipmaps are dirty. This works better if the FBO extension is available because we can use glGenerateMipmap. If the extension is not available it will temporarily enable automatic mipmap generation and reupload the first pixel of each slice. This requires tracking the data for the first pixel. The COGL_TEXTURE_AUTO_MIPMAP flag has been replaced with COGL_TEXTURE_NO_AUTO_MIPMAP so that it will default to auto-mipmapping. The mipmap generation is now effectively free if you are not using a mipmap filter mode so you would only want to disable it if you had some special reason to generate your own mipmaps. ClutterTexture no longer has to store its own copy of the filter mode. Instead it stores it in the material and the property is directly set and read from that. This fixes problems with the filters getting out of sync when a cogl handle is set on the texture directly. It also avoids the mess of having to rerealize the texture if the filter quality changes to HIGH because Cogl will take of generating the mipmaps if needed.
2009-06-04 11:04:57 -04:00
CoglMaterialFilter
cogl_material_layer_get_min_filter (CoglHandle layer_handle)
{
CoglMaterialLayer *layer;
g_return_val_if_fail (cogl_is_material_layer (layer_handle), 0);
layer = _cogl_material_layer_pointer_from_handle (layer_handle);
return layer->min_filter;
}
CoglMaterialFilter
cogl_material_layer_get_mag_filter (CoglHandle layer_handle)
{
CoglMaterialLayer *layer;
g_return_val_if_fail (cogl_is_material_layer (layer_handle), 0);
layer = _cogl_material_layer_pointer_from_handle (layer_handle);
return layer->mag_filter;
}
void
cogl_material_set_layer_filters (CoglHandle handle,
gint layer_index,
CoglMaterialFilter min_filter,
CoglMaterialFilter mag_filter)
{
CoglMaterial *material;
CoglMaterialLayer *layer;
g_return_if_fail (cogl_is_material (handle));
material = _cogl_material_pointer_from_handle (handle);
[material] avoid flushing the journal when just changing the color Whenever we modify a material we call _cogl_material_pre_change_notify which checks to see if the material is referenced by the journal and if so flushes if before we modify the material. Since the journal logs material colors directly into a vertex array (to avoid us repeatedly calling glColor) then we know we never need to flush the journal when material colors change.
2009-06-17 18:31:11 -04:00
layer = _cogl_material_get_layer (material, layer_index, TRUE);
[cogl] Improving Cogl journal to minimize driver overheads + GPU state changes Previously the journal was always flushed at the end of _cogl_rectangles_with_multitexture_coords, (i.e. the end of any cogl_rectangle* calls) but now we have broadened the potential for batching geometry. In ideal circumstances we will only flush once per scene. In summary the journal works like this: When you use any of the cogl_rectangle* APIs then nothing is emitted to the GPU at this point, we just log one or more quads into the journal. A journal entry consists of the quad coordinates, an associated material reference, and a modelview matrix. Ideally the journal only gets flushed once at the end of a scene, but in fact there are things to consider that may cause unwanted flushing, including: - modifying materials mid-scene This is because each quad in the journal has an associated material reference (i.e. not copy), so if you try and modify a material that is already referenced in the journal we force a flush first) NOTE: For now this means you should avoid using cogl_set_source_color() since that currently uses a single shared material. Later we should change it to use a pool of materials that is recycled when the journal is flushed. - modifying any state that isn't currently logged, such as depth, fog and backface culling enables. The first thing that happens when flushing, is to upload all the vertex data associated with the journal into a single VBO. We then go through a process of splitting up the journal into batches that have compatible state so they can be emitted to the GPU together. This is currently broken up into 3 levels so we can stagger the state changes: 1) we break the journal up according to changes in the number of material layers associated with logged quads. The number of layers in a material determines the stride of the associated vertices, so we have to update our vertex array offsets at this level. (i.e. calling gl{Vertex,Color},Pointer etc) 2) we further split batches up according to material compatability. (e.g. materials with different textures) We flush material state at this level. 3) Finally we split batches up according to modelview changes. At this level we update the modelview matrix and actually emit the actual draw command. This commit is largely about putting the initial design in-place; this will be followed by other changes that take advantage of the extended batching.
2009-06-17 13:46:42 -04:00
/* possibly flush primitives referencing the current state... */
[material] avoid flushing the journal when just changing the color Whenever we modify a material we call _cogl_material_pre_change_notify which checks to see if the material is referenced by the journal and if so flushes if before we modify the material. Since the journal logs material colors directly into a vertex array (to avoid us repeatedly calling glColor) then we know we never need to flush the journal when material colors change.
2009-06-17 18:31:11 -04:00
_cogl_material_pre_change_notify (material, FALSE, NULL);
[cogl] Move the texture filters to be a property of the material layer The texture filters are now a property of the material layer rather than the texture object. Whenever a texture is painted with a material it sets the filters on all of the GL textures in the Cogl texture. The filter is cached so that it won't be changed unnecessarily. The automatic mipmap generation has changed so that the mipmaps are only generated when the texture is painted instead of every time the data changes. Changing the texture sets a flag to mark that the mipmaps are dirty. This works better if the FBO extension is available because we can use glGenerateMipmap. If the extension is not available it will temporarily enable automatic mipmap generation and reupload the first pixel of each slice. This requires tracking the data for the first pixel. The COGL_TEXTURE_AUTO_MIPMAP flag has been replaced with COGL_TEXTURE_NO_AUTO_MIPMAP so that it will default to auto-mipmapping. The mipmap generation is now effectively free if you are not using a mipmap filter mode so you would only want to disable it if you had some special reason to generate your own mipmaps. ClutterTexture no longer has to store its own copy of the filter mode. Instead it stores it in the material and the property is directly set and read from that. This fixes problems with the filters getting out of sync when a cogl handle is set on the texture directly. It also avoids the mess of having to rerealize the texture if the filter quality changes to HIGH because Cogl will take of generating the mipmaps if needed.
2009-06-04 11:04:57 -04:00
layer->min_filter = min_filter;
layer->mag_filter = mag_filter;
}
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