2008-04-25 09:37:36 -04:00
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/*
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2009-04-27 10:48:12 -04:00
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* Cogl
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2008-04-25 09:37:36 -04:00
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*
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2009-04-27 10:48:12 -04:00
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* An object oriented GL/GLES Abstraction/Utility Layer
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2008-04-25 09:37:36 -04:00
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*
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2009-04-27 10:48:12 -04:00
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* Copyright (C) 2007,2008,2009 Intel Corporation.
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2008-04-25 09:37:36 -04:00
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "cogl.h"
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#include "cogl-internal.h"
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#include "cogl-context.h"
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2008-06-23 10:57:36 -04:00
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#include "cogl-clip-stack.h"
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2009-05-23 12:42:10 -04:00
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#include "cogl-material-private.h"
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2009-09-25 09:34:34 -04:00
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#include "cogl-clip-stack.h"
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#include "cogl-draw-buffer-private.h"
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2008-04-25 09:37:36 -04:00
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#include <string.h>
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#include <gmodule.h>
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2009-01-20 11:20:54 -05:00
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#include <math.h>
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2008-04-25 09:37:36 -04:00
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#define _COGL_MAX_BEZ_RECURSE_DEPTH 16
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2009-07-27 20:34:33 -04:00
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#define glClientActiveTexture ctx->drv.pf_glClientActiveTexture
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2009-07-01 10:27:11 -04:00
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2008-04-30 11:05:17 -04:00
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void
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2008-12-04 08:45:09 -05:00
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_cogl_path_add_node (gboolean new_sub_path,
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2009-01-20 11:20:54 -05:00
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float x,
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float y)
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2008-04-25 09:37:36 -04:00
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{
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2008-12-04 08:45:09 -05:00
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CoglPathNode new_node;
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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
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2008-06-23 07:01:30 -04:00
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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2008-04-25 09:37:36 -04:00
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2009-01-24 11:55:04 -05:00
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new_node.x = x;
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new_node.y = y;
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2008-12-04 08:45:09 -05:00
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new_node.path_size = 0;
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if (new_sub_path || ctx->path_nodes->len == 0)
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ctx->last_path = ctx->path_nodes->len;
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g_array_append_val (ctx->path_nodes, new_node);
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g_array_index (ctx->path_nodes, CoglPathNode, ctx->last_path).path_size++;
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if (ctx->path_nodes->len == 1)
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2008-04-25 09:37:36 -04:00
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{
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ctx->path_nodes_min.x = ctx->path_nodes_max.x = x;
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ctx->path_nodes_min.y = ctx->path_nodes_max.y = y;
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}
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else
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{
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if (x < ctx->path_nodes_min.x) ctx->path_nodes_min.x = x;
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if (x > ctx->path_nodes_max.x) ctx->path_nodes_max.x = x;
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if (y < ctx->path_nodes_min.y) ctx->path_nodes_min.y = y;
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if (y > ctx->path_nodes_max.y) ctx->path_nodes_max.y = y;
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}
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}
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2008-04-30 11:05:17 -04:00
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void
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2009-09-25 09:34:34 -04:00
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_cogl_path_stroke_nodes (void)
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2008-04-25 09:37:36 -04:00
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{
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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
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guint path_start = 0;
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gulong enable_flags = COGL_ENABLE_VERTEX_ARRAY;
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[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
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CoglMaterialFlushOptions options;
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2008-12-04 08:45:09 -05:00
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2008-04-25 09:37:36 -04:00
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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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
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2009-09-25 09:34:34 -04:00
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_cogl_journal_flush ();
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/* NB: _cogl_draw_buffer_flush_state may disrupt various state (such
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* as the material state) when flushing the clip stack, so should
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* always be done first when preparing to draw. */
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_cogl_draw_buffer_flush_state (_cogl_get_draw_buffer (), 0);
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2009-05-23 12:42:10 -04:00
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enable_flags |= _cogl_material_get_cogl_enable_flags (ctx->source_material);
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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
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cogl_enable (enable_flags);
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[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
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options.flags = COGL_MATERIAL_FLUSH_DISABLE_MASK;
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/* disable all texture layers */
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options.disable_layers = (guint32)~0;
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_cogl_material_flush_gl_state (ctx->source_material, &options);
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2008-12-04 08:45:09 -05:00
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while (path_start < ctx->path_nodes->len)
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{
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CoglPathNode *path = &g_array_index (ctx->path_nodes, CoglPathNode,
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path_start);
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GE( glVertexPointer (2, GL_FLOAT, sizeof (CoglPathNode),
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(guchar *) path
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+ G_STRUCT_OFFSET (CoglPathNode, x)) );
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GE( glDrawArrays (GL_LINE_STRIP, 0, path->path_size) );
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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
|
|
|
|
2008-12-04 08:45:09 -05:00
|
|
|
path_start += path->path_size;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
2009-01-20 11:20:54 -05:00
|
|
|
_cogl_path_get_bounds (floatVec2 nodes_min,
|
|
|
|
|
floatVec2 nodes_max,
|
2009-01-20 11:20:54 -05:00
|
|
|
float *bounds_x,
|
|
|
|
|
float *bounds_y,
|
|
|
|
|
float *bounds_w,
|
|
|
|
|
float *bounds_h)
|
2008-12-04 08:45:09 -05:00
|
|
|
{
|
2009-01-20 11:20:54 -05:00
|
|
|
*bounds_x = nodes_min.x;
|
|
|
|
|
*bounds_y = nodes_min.y;
|
|
|
|
|
*bounds_w = nodes_max.x - *bounds_x;
|
|
|
|
|
*bounds_h = nodes_max.y - *bounds_y;
|
2008-04-25 09:37:36 -04:00
|
|
|
}
|
|
|
|
|
|
2008-05-05 08:01:19 -04:00
|
|
|
void
|
2009-01-20 11:20:54 -05:00
|
|
|
_cogl_add_path_to_stencil_buffer (floatVec2 nodes_min,
|
|
|
|
|
floatVec2 nodes_max,
|
2008-12-04 08:45:09 -05:00
|
|
|
guint path_size,
|
|
|
|
|
CoglPathNode *path,
|
|
|
|
|
gboolean merge)
|
2008-04-25 09:37:36 -04:00
|
|
|
{
|
2009-09-25 09:34:34 -04:00
|
|
|
guint path_start = 0;
|
|
|
|
|
guint sub_path_num = 0;
|
|
|
|
|
float bounds_x;
|
|
|
|
|
float bounds_y;
|
|
|
|
|
float bounds_w;
|
|
|
|
|
float bounds_h;
|
|
|
|
|
gulong enable_flags = COGL_ENABLE_VERTEX_ARRAY;
|
|
|
|
|
CoglHandle prev_source;
|
|
|
|
|
int i;
|
|
|
|
|
CoglHandle draw_buffer = _cogl_get_draw_buffer ();
|
|
|
|
|
CoglMatrixStack *modelview_stack =
|
|
|
|
|
_cogl_draw_buffer_get_modelview_stack (draw_buffer);
|
|
|
|
|
CoglMatrixStack *projection_stack =
|
|
|
|
|
_cogl_draw_buffer_get_projection_stack (draw_buffer);
|
|
|
|
|
|
2008-12-04 08:45:09 -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);
|
|
|
|
|
|
2009-09-25 09:34:34 -04:00
|
|
|
/* We don't track changes to the stencil buffer in the journal
|
|
|
|
|
* so we need to flush any batched geometry first */
|
[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_journal_flush ();
|
|
|
|
|
|
2009-09-25 09:34:34 -04:00
|
|
|
/* NB: _cogl_draw_buffer_flush_state may disrupt various state (such
|
|
|
|
|
* as the material state) when flushing the clip stack, so should
|
|
|
|
|
* always be done first when preparing to draw. */
|
|
|
|
|
_cogl_draw_buffer_flush_state (draw_buffer, 0);
|
|
|
|
|
|
2009-01-24 11:55:04 -05:00
|
|
|
/* Just setup a simple material that doesn't use texturing... */
|
[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
|
|
|
prev_source = cogl_handle_ref (ctx->source_material);
|
|
|
|
|
cogl_set_source (ctx->stencil_material);
|
|
|
|
|
|
|
|
|
|
_cogl_material_flush_gl_state (ctx->source_material, NULL);
|
2009-01-24 11:55:04 -05:00
|
|
|
|
|
|
|
|
enable_flags |=
|
2009-05-23 12:42:10 -04:00
|
|
|
_cogl_material_get_cogl_enable_flags (ctx->source_material);
|
2009-01-24 11:55:04 -05:00
|
|
|
cogl_enable (enable_flags);
|
|
|
|
|
|
2008-12-04 08:45:09 -05:00
|
|
|
_cogl_path_get_bounds (nodes_min, nodes_max,
|
|
|
|
|
&bounds_x, &bounds_y, &bounds_w, &bounds_h);
|
|
|
|
|
|
|
|
|
|
if (merge)
|
|
|
|
|
{
|
|
|
|
|
GE( glStencilMask (2) );
|
|
|
|
|
GE( glStencilFunc (GL_LEQUAL, 0x2, 0x6) );
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
2009-09-25 09:34:34 -04:00
|
|
|
cogl_clear (NULL, COGL_BUFFER_BIT_STENCIL);
|
2008-12-04 08:45:09 -05:00
|
|
|
GE( glStencilMask (1) );
|
|
|
|
|
GE( glStencilFunc (GL_LEQUAL, 0x1, 0x3) );
|
|
|
|
|
}
|
2008-04-25 09:37:36 -04:00
|
|
|
|
|
|
|
|
GE( glEnable (GL_STENCIL_TEST) );
|
|
|
|
|
GE( glStencilOp (GL_INVERT, GL_INVERT, GL_INVERT) );
|
2008-06-23 10:57:36 -04:00
|
|
|
|
2008-12-04 08:45:09 -05:00
|
|
|
GE( glColorMask (FALSE, FALSE, FALSE, FALSE) );
|
|
|
|
|
GE( glDepthMask (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
|
|
|
|
2009-06-21 20:29:39 -04:00
|
|
|
for (i = 0; i < ctx->n_texcoord_arrays_enabled; i++)
|
|
|
|
|
{
|
|
|
|
|
GE (glClientActiveTexture (GL_TEXTURE0 + i));
|
|
|
|
|
GE (glDisableClientState (GL_TEXTURE_COORD_ARRAY));
|
|
|
|
|
}
|
|
|
|
|
ctx->n_texcoord_arrays_enabled = 0;
|
|
|
|
|
|
2008-12-04 08:45:09 -05:00
|
|
|
while (path_start < path_size)
|
|
|
|
|
{
|
|
|
|
|
GE( glVertexPointer (2, GL_FLOAT, sizeof (CoglPathNode),
|
|
|
|
|
(guchar *) path
|
|
|
|
|
+ G_STRUCT_OFFSET (CoglPathNode, x)) );
|
|
|
|
|
GE( glDrawArrays (GL_TRIANGLE_FAN, 0, path->path_size) );
|
|
|
|
|
|
|
|
|
|
if (sub_path_num > 0)
|
|
|
|
|
{
|
|
|
|
|
/* Union the two stencil buffers bits into the least
|
|
|
|
|
significant bit */
|
|
|
|
|
GE( glStencilMask (merge ? 6 : 3) );
|
|
|
|
|
GE( glStencilOp (GL_ZERO, GL_REPLACE, GL_REPLACE) );
|
2009-09-25 09:34:34 -04:00
|
|
|
cogl_rectangle (bounds_x, bounds_y,
|
|
|
|
|
bounds_x + bounds_w, bounds_y + bounds_h);
|
|
|
|
|
/* Make sure the rectangle hits the stencil buffer before
|
|
|
|
|
* directly changing other GL state. */
|
|
|
|
|
_cogl_journal_flush ();
|
|
|
|
|
/* NB: The journal flushing may trash the modelview state and
|
|
|
|
|
* enable flags */
|
|
|
|
|
_cogl_matrix_stack_flush_to_gl (modelview_stack,
|
|
|
|
|
COGL_MATRIX_MODELVIEW);
|
|
|
|
|
cogl_enable (enable_flags);
|
|
|
|
|
|
2008-12-04 08:45:09 -05:00
|
|
|
GE( glStencilOp (GL_INVERT, GL_INVERT, GL_INVERT) );
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
GE( glStencilMask (merge ? 4 : 2) );
|
|
|
|
|
|
|
|
|
|
path_start += path->path_size;
|
|
|
|
|
path += path->path_size;
|
|
|
|
|
sub_path_num++;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (merge)
|
|
|
|
|
{
|
|
|
|
|
/* Now we have the new stencil buffer in bit 1 and the old
|
|
|
|
|
stencil buffer in bit 0 so we need to intersect them */
|
|
|
|
|
GE( glStencilMask (3) );
|
|
|
|
|
GE( glStencilFunc (GL_NEVER, 0x2, 0x3) );
|
|
|
|
|
GE( glStencilOp (GL_DECR, GL_DECR, GL_DECR) );
|
|
|
|
|
/* Decrement all of the bits twice so that only pixels where the
|
|
|
|
|
value is 3 will remain */
|
2009-03-12 10:16:48 -04:00
|
|
|
|
2009-09-25 09:34:34 -04:00
|
|
|
_cogl_matrix_stack_push (projection_stack);
|
|
|
|
|
_cogl_matrix_stack_load_identity (projection_stack);
|
|
|
|
|
_cogl_matrix_stack_flush_to_gl (projection_stack,
|
|
|
|
|
COGL_MATRIX_PROJECTION);
|
2009-03-12 10:16:48 -04:00
|
|
|
|
2009-09-25 09:34:34 -04:00
|
|
|
_cogl_matrix_stack_push (modelview_stack);
|
|
|
|
|
_cogl_matrix_stack_load_identity (modelview_stack);
|
|
|
|
|
_cogl_matrix_stack_flush_to_gl (modelview_stack,
|
|
|
|
|
COGL_MATRIX_MODELVIEW);
|
2009-06-21 19:49:20 -04:00
|
|
|
|
2009-09-25 09:34:34 -04:00
|
|
|
cogl_rectangle (-1.0, -1.0, 1.0, 1.0);
|
|
|
|
|
cogl_rectangle (-1.0, -1.0, 1.0, 1.0);
|
|
|
|
|
/* Make sure these rectangles hit the stencil buffer before we
|
|
|
|
|
* restore the stencil op/func. */
|
|
|
|
|
_cogl_journal_flush ();
|
2009-03-12 10:16:48 -04:00
|
|
|
|
2009-09-25 09:34:34 -04:00
|
|
|
_cogl_matrix_stack_pop (modelview_stack);
|
|
|
|
|
_cogl_matrix_stack_pop (projection_stack);
|
2008-12-04 08:45:09 -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
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2008-06-23 10:57:36 -04:00
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GE( glStencilMask (~(GLuint) 0) );
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2008-12-04 08:45:09 -05:00
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GE( glDepthMask (TRUE) );
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GE( glColorMask (TRUE, TRUE, TRUE, TRUE) );
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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
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2008-06-23 10:57:36 -04:00
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GE( glStencilFunc (GL_EQUAL, 0x1, 0x1) );
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GE( glStencilOp (GL_KEEP, GL_KEEP, GL_KEEP) );
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[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
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/* restore the original material */
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cogl_set_source (prev_source);
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cogl_handle_unref (prev_source);
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2008-12-04 08:45:09 -05:00
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}
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void
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2009-09-25 09:34:34 -04:00
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_cogl_path_fill_nodes (void)
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2008-12-04 08:45:09 -05:00
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{
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2009-09-25 09:34:34 -04:00
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CoglHandle draw_buffer;
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CoglClipStackState *clip_state;
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2009-01-20 11:20:54 -05:00
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float bounds_x;
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float bounds_y;
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float bounds_w;
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float bounds_h;
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2008-12-04 08:45:09 -05:00
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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2009-09-25 09:34:34 -04:00
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_cogl_journal_flush ();
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draw_buffer = _cogl_get_draw_buffer ();
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clip_state = _cogl_draw_buffer_get_clip_state (draw_buffer);
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2009-01-24 11:55:04 -05:00
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_cogl_path_get_bounds (ctx->path_nodes_min, ctx->path_nodes_max,
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&bounds_x, &bounds_y, &bounds_w, &bounds_h);
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2008-12-04 08:45:09 -05:00
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_cogl_add_path_to_stencil_buffer (ctx->path_nodes_min,
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ctx->path_nodes_max,
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ctx->path_nodes->len,
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&g_array_index (ctx->path_nodes,
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CoglPathNode, 0),
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2009-09-25 09:34:34 -04:00
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clip_state->stencil_used);
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2008-12-04 08:45:09 -05:00
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2009-01-28 09:47:03 -05:00
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cogl_rectangle (bounds_x, bounds_y,
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bounds_x + bounds_w, bounds_y + bounds_h);
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2008-12-04 08:45:09 -05:00
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/* The stencil buffer now contains garbage so the clip area needs to
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be rebuilt */
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2009-09-25 09:34:34 -04:00
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_cogl_clip_stack_state_dirty (clip_state);
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2008-04-25 09:37:36 -04:00
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}
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2009-09-25 09:34:34 -04:00
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