isa/mutter
1
0
Fork 0
mirror of https://github.com/brl/mutter.git synced 2024-12-26 04:42:14 +00:00
Code Issues Packages Projects Releases Wiki Activity
21cf79db9c
mutter/cogl/cogl-attribute-private.h

114 lines
3.3 KiB
C
Raw Normal View History

cogl: Adds experimental CoglVertexAttribute API A CoglVertexAttribute defines a single attribute contained in a CoglVertexArray. I.e. a CoglVertexArray is simply a buffer of N bytes intended for containing a collection of attributes (position, color, normals etc) and a CoglVertexAttribute defines one such attribute by specifying its start offset in the array, its type, the number of components and the stride etc.
2010-10-12 11:53:10 +00:00
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2010 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, see
* <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
cogl: rename CoglVertexAttribute CoglAttribute This is part of a broader cleanup of some of the experimental Cogl API. One of the reasons for this particular rename is to reduce the verbosity of using the API. Another reason is that CoglVertexArray is going to be renamed CoglAttributeBuffer and we want to help emphasize the relationship between CoglAttributes and CoglAttributeBuffers.
2011-01-20 19:31:53 +00:00
#ifndef __COGL_ATTRIBUTE_PRIVATE_H
#define __COGL_ATTRIBUTE_PRIVATE_H
cogl: Adds experimental CoglVertexAttribute API A CoglVertexAttribute defines a single attribute contained in a CoglVertexArray. I.e. a CoglVertexArray is simply a buffer of N bytes intended for containing a collection of attributes (position, color, normals etc) and a CoglVertexAttribute defines one such attribute by specifying its start offset in the array, its type, the number of components and the stride etc.
2010-10-12 11:53:10 +00:00
#include "cogl-object-private.h"
cogl: rename CoglVertexAttribute CoglAttribute This is part of a broader cleanup of some of the experimental Cogl API. One of the reasons for this particular rename is to reduce the verbosity of using the API. Another reason is that CoglVertexArray is going to be renamed CoglAttributeBuffer and we want to help emphasize the relationship between CoglAttributes and CoglAttributeBuffers.
2011-01-20 19:31:53 +00:00
#include "cogl-attribute.h"
Change API so that CoglPixelBuffer no longer knows its w/h/format The idea is that CoglPixelBuffer should just be a buffer that can be used for pixel data and it has no idea about the details of any images that are stored in it. This is analogous to CoglAttributeBuffer which itself does not have any information about the attributes. When you want to use a pixel buffer you should create a CoglBitmap which points to a region of the attribute buffer and provides the extra needed information such as the width, height and format. That way it is also possible to use a single CoglPixelBuffer with multiple bitmaps. The changes that are made are: • cogl_pixel_buffer_new_with_size has been removed and in its place is cogl_bitmap_new_with_size. This will create a pixel buffer at the right size and rowstride for the given width/height/format and immediately create a single CoglBitmap to point into it. The old function had an out-parameter for the stride of the image but with the new API this should be queriable from the bitmap (although there is no function for this yet). • There is now a public cogl_pixel_buffer_new constructor. This takes a size in bytes and data pointer similarly to cogl_attribute_buffer_new. • cogl_texture_new_from_buffer has been removed. If you want to create a texture from a pixel buffer you should wrap it up in a bitmap first. There is already API to create a texture from a bitmap. This patch also does a bit of header juggling because cogl-context.h was including cogl-texture.h and cogl-framebuffer.h which were causing some circular dependencies when cogl-bitmap.h includes cogl-context.h. These weren't actually needed in cogl-context.h itself but a few other headers were relying on them being included so this adds the #includes where necessary. Reviewed-by: Robert Bragg <robert@linux.intel.com>
2012-02-25 20:04:45 +00:00
#include "cogl-framebuffer.h"
cogl: Adds experimental CoglVertexAttribute API A CoglVertexAttribute defines a single attribute contained in a CoglVertexArray. I.e. a CoglVertexArray is simply a buffer of N bytes intended for containing a collection of attributes (position, color, normals etc) and a CoglVertexAttribute defines one such attribute by specifying its start offset in the array, its type, the number of components and the stride etc.
2010-10-12 11:53:10 +00:00
typedef enum
{
cogl: rename CoglVertexAttribute CoglAttribute This is part of a broader cleanup of some of the experimental Cogl API. One of the reasons for this particular rename is to reduce the verbosity of using the API. Another reason is that CoglVertexArray is going to be renamed CoglAttributeBuffer and we want to help emphasize the relationship between CoglAttributes and CoglAttributeBuffers.
2011-01-20 19:31:53 +00:00
COGL_ATTRIBUTE_NAME_ID_POSITION_ARRAY,
COGL_ATTRIBUTE_NAME_ID_COLOR_ARRAY,
COGL_ATTRIBUTE_NAME_ID_TEXTURE_COORD_ARRAY,
COGL_ATTRIBUTE_NAME_ID_NORMAL_ARRAY,
COGL_ATTRIBUTE_NAME_ID_CUSTOM_ARRAY
} CoglAttributeNameID;
cogl: Adds experimental CoglVertexAttribute API A CoglVertexAttribute defines a single attribute contained in a CoglVertexArray. I.e. a CoglVertexArray is simply a buffer of N bytes intended for containing a collection of attributes (position, color, normals etc) and a CoglVertexAttribute defines one such attribute by specifying its start offset in the array, its type, the number of components and the stride etc.
2010-10-12 11:53:10 +00:00
rework enabling of attributes, removing _cogl_enable() This removes the limited caching of enabled attributes done by _cogl_enable() and replaces it with a more generalized set of bitmasks associated with the context that allow us to efficiently compare the set of attribute locations that are currently enabled vs the new locations that need enabling so we only have to inform OpenGL of the changes in which locations are enabled/disabled. This also adds a per-context hash table for mapping attribute names to global name-state structs which includes a unique name-index for any name as well as pre-validated information about builtin "cogl_" attribute names including whether the attribute is normalized and what texture unit a texture attribute corresponds too. The name-state hash table means that cogl_attribute_new() now only needs to validate names the first time they are seen. CoglAttributes now reference a name-state structure instead of just the attribute name, so now we can efficiently get the name-index for any attribute and we can use that to index into a per-glsl-program cache that maps name indices to real GL attribute locations so when we get asked to draw a set of attributes we can very quickly determine what GL attributes need to be setup and enabled. If we don't have a cached location though we can still quickly access the string name so we can query OpenGL. Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-24 18:09:53 +00:00
typedef struct _CoglAttributeNameState
{
char *name;
CoglAttributeNameID name_id;
int name_index;
Switch use of primitive glib types to c99 equivalents The coding style has for a long time said to avoid using redundant glib data types such as gint or gchar etc because we feel that they make the code look unnecessarily foreign to developers coming from outside of the Gnome developer community. Note: When we tried to find the historical rationale for the types we just found that they were apparently only added for consistent syntax highlighting which didn't seem that compelling. Up until now we have been continuing to use some of the platform specific type such as gint{8,16,32,64} and gsize but this patch switches us over to using the standard c99 equivalents instead so we can further ensure that our code looks familiar to the widest range of C developers who might potentially contribute to Cogl. So instead of using the gint{8,16,32,64} and guint{8,16,32,64} types this switches all Cogl code to instead use the int{8,16,32,64}_t and uint{8,16,32,64}_t c99 types instead. Instead of gsize we now use size_t For now we are not going to use the c99 _Bool type and instead we have introduced a new CoglBool type to use instead of gboolean. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 5967dad2400d32ca6319cef6cb572e81bf2c15f0)
2012-04-16 20:56:40 +00:00
CoglBool normalized_default;
rework enabling of attributes, removing _cogl_enable() This removes the limited caching of enabled attributes done by _cogl_enable() and replaces it with a more generalized set of bitmasks associated with the context that allow us to efficiently compare the set of attribute locations that are currently enabled vs the new locations that need enabling so we only have to inform OpenGL of the changes in which locations are enabled/disabled. This also adds a per-context hash table for mapping attribute names to global name-state structs which includes a unique name-index for any name as well as pre-validated information about builtin "cogl_" attribute names including whether the attribute is normalized and what texture unit a texture attribute corresponds too. The name-state hash table means that cogl_attribute_new() now only needs to validate names the first time they are seen. CoglAttributes now reference a name-state structure instead of just the attribute name, so now we can efficiently get the name-index for any attribute and we can use that to index into a per-glsl-program cache that maps name indices to real GL attribute locations so when we get asked to draw a set of attributes we can very quickly determine what GL attributes need to be setup and enabled. If we don't have a cached location though we can still quickly access the string name so we can query OpenGL. Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-24 18:09:53 +00:00
int texture_unit;
} CoglAttributeNameState;
cogl: rename CoglVertexAttribute CoglAttribute This is part of a broader cleanup of some of the experimental Cogl API. One of the reasons for this particular rename is to reduce the verbosity of using the API. Another reason is that CoglVertexArray is going to be renamed CoglAttributeBuffer and we want to help emphasize the relationship between CoglAttributes and CoglAttributeBuffers.
2011-01-20 19:31:53 +00:00
struct _CoglAttribute
cogl: Adds experimental CoglVertexAttribute API A CoglVertexAttribute defines a single attribute contained in a CoglVertexArray. I.e. a CoglVertexArray is simply a buffer of N bytes intended for containing a collection of attributes (position, color, normals etc) and a CoglVertexAttribute defines one such attribute by specifying its start offset in the array, its type, the number of components and the stride etc.
2010-10-12 11:53:10 +00:00
{
CoglObject _parent;
Rename CoglVertexArray to CoglAttributeBuffer This is part of a broader cleanup of some of the experimental Cogl API. One of the reasons for this particular rename is to switch away from using the term "Array" which implies a regular, indexable layout which isn't the case. We also want to have a strongly implied relationship between CoglAttributes and CoglAttributeBuffers.
2011-03-02 15:01:41 +00:00
CoglAttributeBuffer *attribute_buffer;
rework enabling of attributes, removing _cogl_enable() This removes the limited caching of enabled attributes done by _cogl_enable() and replaces it with a more generalized set of bitmasks associated with the context that allow us to efficiently compare the set of attribute locations that are currently enabled vs the new locations that need enabling so we only have to inform OpenGL of the changes in which locations are enabled/disabled. This also adds a per-context hash table for mapping attribute names to global name-state structs which includes a unique name-index for any name as well as pre-validated information about builtin "cogl_" attribute names including whether the attribute is normalized and what texture unit a texture attribute corresponds too. The name-state hash table means that cogl_attribute_new() now only needs to validate names the first time they are seen. CoglAttributes now reference a name-state structure instead of just the attribute name, so now we can efficiently get the name-index for any attribute and we can use that to index into a per-glsl-program cache that maps name indices to real GL attribute locations so when we get asked to draw a set of attributes we can very quickly determine what GL attributes need to be setup and enabled. If we don't have a cached location though we can still quickly access the string name so we can query OpenGL. Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-24 18:09:53 +00:00
const CoglAttributeNameState *name_state;
Switch use of primitive glib types to c99 equivalents The coding style has for a long time said to avoid using redundant glib data types such as gint or gchar etc because we feel that they make the code look unnecessarily foreign to developers coming from outside of the Gnome developer community. Note: When we tried to find the historical rationale for the types we just found that they were apparently only added for consistent syntax highlighting which didn't seem that compelling. Up until now we have been continuing to use some of the platform specific type such as gint{8,16,32,64} and gsize but this patch switches us over to using the standard c99 equivalents instead so we can further ensure that our code looks familiar to the widest range of C developers who might potentially contribute to Cogl. So instead of using the gint{8,16,32,64} and guint{8,16,32,64} types this switches all Cogl code to instead use the int{8,16,32,64}_t and uint{8,16,32,64}_t c99 types instead. Instead of gsize we now use size_t For now we are not going to use the c99 _Bool type and instead we have introduced a new CoglBool type to use instead of gboolean. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 5967dad2400d32ca6319cef6cb572e81bf2c15f0)
2012-04-16 20:56:40 +00:00
size_t stride;
size_t offset;
cogl: Adds experimental CoglVertexAttribute API A CoglVertexAttribute defines a single attribute contained in a CoglVertexArray. I.e. a CoglVertexArray is simply a buffer of N bytes intended for containing a collection of attributes (position, color, normals etc) and a CoglVertexAttribute defines one such attribute by specifying its start offset in the array, its type, the number of components and the stride etc.
2010-10-12 11:53:10 +00:00
int n_components;
cogl: rename CoglVertexAttribute CoglAttribute This is part of a broader cleanup of some of the experimental Cogl API. One of the reasons for this particular rename is to reduce the verbosity of using the API. Another reason is that CoglVertexArray is going to be renamed CoglAttributeBuffer and we want to help emphasize the relationship between CoglAttributes and CoglAttributeBuffers.
2011-01-20 19:31:53 +00:00
CoglAttributeType type;
Switch use of primitive glib types to c99 equivalents The coding style has for a long time said to avoid using redundant glib data types such as gint or gchar etc because we feel that they make the code look unnecessarily foreign to developers coming from outside of the Gnome developer community. Note: When we tried to find the historical rationale for the types we just found that they were apparently only added for consistent syntax highlighting which didn't seem that compelling. Up until now we have been continuing to use some of the platform specific type such as gint{8,16,32,64} and gsize but this patch switches us over to using the standard c99 equivalents instead so we can further ensure that our code looks familiar to the widest range of C developers who might potentially contribute to Cogl. So instead of using the gint{8,16,32,64} and guint{8,16,32,64} types this switches all Cogl code to instead use the int{8,16,32,64}_t and uint{8,16,32,64}_t c99 types instead. Instead of gsize we now use size_t For now we are not going to use the c99 _Bool type and instead we have introduced a new CoglBool type to use instead of gboolean. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 5967dad2400d32ca6319cef6cb572e81bf2c15f0)
2012-04-16 20:56:40 +00:00
CoglBool normalized;
cogl: Adds experimental CoglVertexAttribute API A CoglVertexAttribute defines a single attribute contained in a CoglVertexArray. I.e. a CoglVertexArray is simply a buffer of N bytes intended for containing a collection of attributes (position, color, normals etc) and a CoglVertexAttribute defines one such attribute by specifying its start offset in the array, its type, the number of components and the stride etc.
2010-10-12 11:53:10 +00:00
int immutable_ref;
};
cogl-vertex-attribute: Add flags to _cogl_draw_vertex_attributes_array There is an internal version of cogl_draw_vertex_attributes_array which previously just bypassed the framebuffer flushing, journal flushing and pipeline validation so that it could be used to draw the journal. This patch generalises the function so that it takes a set of flags to specify which parts to flush. The public version of the function now just calls the internal version with the flags set to 0. The '_real' version of the function has now been merged into the internal version of the function because it was only called in one place. This simplifies the code somewhat. The common code which flushed the various state has been moved to a separate function. The indexed versions of the functions have had a similar treatment. http://bugzilla.clutter-project.org/show_bug.cgi?id=2481
2010-12-14 14:24:17 +00:00
typedef enum
{
COGL_DRAW_SKIP_JOURNAL_FLUSH = 1 << 0,
COGL_DRAW_SKIP_PIPELINE_VALIDATION = 1 << 1,
cogl-journal: Avoid enabling blending if possible The vertex attribute API assumes that if there is a color array enabled then we can't determine if the colors are opaque so we have to enable blending. The journal always uses a color array to avoid switching color state between rectangles. Since the journal switched to using vertex attributes this means we effectively always enable blending from the journal. To fix this there is now a new flag for _cogl_draw_vertex_attributes to specify that the color array is known to only contain opaque colors which causes the draw function not to copy the pipeline. If the pipeline has blending disabled then the journal passes this flag. http://bugzilla.clutter-project.org/show_bug.cgi?id=2481
2010-12-14 14:44:45 +00:00
COGL_DRAW_SKIP_FRAMEBUFFER_FLUSH = 1 << 2,
framebuffer: Add cogl_framebuffer draw methods This adds cogl_framebuffer_ apis for drawing attributes and primitives that replace corresponding apis that depend on the default CoglContext. This is part of the on going effort to adapt the Cogl api so it no longer depends on a global context variable. All the new drawing functions also take an explicit pipeline argument since we are also aiming to avoid being a stateful api like Cairo and OpenGL. Being stateless makes it easier for orthogonal components to share access to the GPU. Being stateless should also minimize any impedance miss-match for those wanting to build higher level stateless apis on top of Cogl. Note: none of the legacy, global state options such as cogl_set_depth_test_enabled(), cogl_set_backface_culling_enabled() or cogl_program_use() are supported by these new drawing apis and if set will simply be silently ignored. Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-01-08 02:59:04 +00:00
COGL_DRAW_SKIP_LEGACY_STATE = 1 << 3,
cogl-journal: Avoid enabling blending if possible The vertex attribute API assumes that if there is a color array enabled then we can't determine if the colors are opaque so we have to enable blending. The journal always uses a color array to avoid switching color state between rectangles. Since the journal switched to using vertex attributes this means we effectively always enable blending from the journal. To fix this there is now a new flag for _cogl_draw_vertex_attributes to specify that the color array is known to only contain opaque colors which causes the draw function not to copy the pipeline. If the pipeline has blending disabled then the journal passes this flag. http://bugzilla.clutter-project.org/show_bug.cgi?id=2481
2010-12-14 14:44:45 +00:00
/* By default the vertex attribute drawing code will assume that if
there is a color attribute array enabled then we can't determine
if the colors will be opaque so we need to enabling
blending. However when drawing from the journal we know what the
contents of the color array is so we can override this by passing
this flag. */
Preserve the CoglDrawFlags when drawing a wireframe Previously the CoglDrawFlags passed to _cogl_framebuffer_draw_indexed_attributes when drawing is redirected to draw a wireframe are overriden to avoid validating the pipeline, flushing the framebuffer state and flushing the journal. This ends up breaking scenes that only contain models drawn from attributes in the application because nothing will flush the matrices. It seems to make more sense to just use whatever draw flags were passed from the original draw command so that it will flush the matrices if the caller was expecting it. One problem with this is that if the wireframe causes the journal to be flushed then it will already have temporarily disabled the wireframe debug flag so the journal will not be drawn with wireframes. To fix this the patch adds a CoglDrawFlag to disable the wireframe and uses that instead of disabling the debug flag. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit 283f6733e63ba65d9921f45868edaabbd9420a61)
2012-05-19 21:47:28 +00:00
COGL_DRAW_COLOR_ATTRIBUTE_IS_OPAQUE = 1 << 4,
/* This forcibly disables the debug option to divert all drawing to
* wireframes */
COGL_DRAW_SKIP_DEBUG_WIREFRAME = 1 << 5
cogl-vertex-attribute: Add flags to _cogl_draw_vertex_attributes_array There is an internal version of cogl_draw_vertex_attributes_array which previously just bypassed the framebuffer flushing, journal flushing and pipeline validation so that it could be used to draw the journal. This patch generalises the function so that it takes a set of flags to specify which parts to flush. The public version of the function now just calls the internal version with the flags set to 0. The '_real' version of the function has now been merged into the internal version of the function because it was only called in one place. This simplifies the code somewhat. The common code which flushed the various state has been moved to a separate function. The indexed versions of the functions have had a similar treatment. http://bugzilla.clutter-project.org/show_bug.cgi?id=2481
2010-12-14 14:24:17 +00:00
} CoglDrawFlags;
rework enabling of attributes, removing _cogl_enable() This removes the limited caching of enabled attributes done by _cogl_enable() and replaces it with a more generalized set of bitmasks associated with the context that allow us to efficiently compare the set of attribute locations that are currently enabled vs the new locations that need enabling so we only have to inform OpenGL of the changes in which locations are enabled/disabled. This also adds a per-context hash table for mapping attribute names to global name-state structs which includes a unique name-index for any name as well as pre-validated information about builtin "cogl_" attribute names including whether the attribute is normalized and what texture unit a texture attribute corresponds too. The name-state hash table means that cogl_attribute_new() now only needs to validate names the first time they are seen. CoglAttributes now reference a name-state structure instead of just the attribute name, so now we can efficiently get the name-index for any attribute and we can use that to index into a per-glsl-program cache that maps name indices to real GL attribute locations so when we get asked to draw a set of attributes we can very quickly determine what GL attributes need to be setup and enabled. If we don't have a cached location though we can still quickly access the string name so we can query OpenGL. Reviewed-by: Neil Roberts <neil@linux.intel.com>
2011-11-24 18:09:53 +00:00
/* During CoglContext initialization we register the "cogl_color_in"
* attribute name so it gets a global name_index of 0. We need to know
* the name_index for "cogl_color_in" in
* _cogl_pipeline_flush_gl_state() */
#define COGL_ATTRIBUTE_COLOR_NAME_INDEX 0
CoglAttributeNameState *
_cogl_attribute_register_attribute_name (CoglContext *context,
const char *name);
cogl: rename CoglVertexAttribute CoglAttribute This is part of a broader cleanup of some of the experimental Cogl API. One of the reasons for this particular rename is to reduce the verbosity of using the API. Another reason is that CoglVertexArray is going to be renamed CoglAttributeBuffer and we want to help emphasize the relationship between CoglAttributes and CoglAttributeBuffers.
2011-01-20 19:31:53 +00:00
CoglAttribute *
_cogl_attribute_immutable_ref (CoglAttribute *attribute);
cogl: Adds experimental CoglVertexAttribute API A CoglVertexAttribute defines a single attribute contained in a CoglVertexArray. I.e. a CoglVertexArray is simply a buffer of N bytes intended for containing a collection of attributes (position, color, normals etc) and a CoglVertexAttribute defines one such attribute by specifying its start offset in the array, its type, the number of components and the stride etc.
2010-10-12 11:53:10 +00:00
void
cogl: rename CoglVertexAttribute CoglAttribute This is part of a broader cleanup of some of the experimental Cogl API. One of the reasons for this particular rename is to reduce the verbosity of using the API. Another reason is that CoglVertexArray is going to be renamed CoglAttributeBuffer and we want to help emphasize the relationship between CoglAttributes and CoglAttributeBuffers.
2011-01-20 19:31:53 +00:00
_cogl_attribute_immutable_unref (CoglAttribute *attribute);
cogl: Adds experimental CoglVertexAttribute API A CoglVertexAttribute defines a single attribute contained in a CoglVertexArray. I.e. a CoglVertexArray is simply a buffer of N bytes intended for containing a collection of attributes (position, color, normals etc) and a CoglVertexAttribute defines one such attribute by specifying its start offset in the array, its type, the number of components and the stride etc.
2010-10-12 11:53:10 +00:00
void
framebuffer: Add cogl_framebuffer draw methods This adds cogl_framebuffer_ apis for drawing attributes and primitives that replace corresponding apis that depend on the default CoglContext. This is part of the on going effort to adapt the Cogl api so it no longer depends on a global context variable. All the new drawing functions also take an explicit pipeline argument since we are also aiming to avoid being a stateful api like Cairo and OpenGL. Being stateless makes it easier for orthogonal components to share access to the GPU. Being stateless should also minimize any impedance miss-match for those wanting to build higher level stateless apis on top of Cogl. Note: none of the legacy, global state options such as cogl_set_depth_test_enabled(), cogl_set_backface_culling_enabled() or cogl_program_use() are supported by these new drawing apis and if set will simply be silently ignored. Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-01-08 02:59:04 +00:00
_cogl_attribute_disable_cached_arrays (void);
cogl: Adds experimental CoglVertexAttribute API A CoglVertexAttribute defines a single attribute contained in a CoglVertexArray. I.e. a CoglVertexArray is simply a buffer of N bytes intended for containing a collection of attributes (position, color, normals etc) and a CoglVertexAttribute defines one such attribute by specifying its start offset in the array, its type, the number of components and the stride etc.
2010-10-12 11:53:10 +00:00
cogl-vertex-attribute: Use glVertexAttribPointer on GLES2 When the GLES2 wrapper is removed we can't use the fixed function API such as glColorPointer to set the builtin attributes. Instead the GLSL progend now maintains a cache of attribute locations that are queried with glGetAttribLocation. The code that previously maintained a cache of the enabled texture coord arrays has been modified to also cache the enabled vertex attributes under GLES2. The vertex attribute API is now the only place that is using this cache so it has been moved into cogl-vertex-attribute.c
2010-12-03 17:46:16 +00:00
void
framebuffer: Add cogl_framebuffer draw methods This adds cogl_framebuffer_ apis for drawing attributes and primitives that replace corresponding apis that depend on the default CoglContext. This is part of the on going effort to adapt the Cogl api so it no longer depends on a global context variable. All the new drawing functions also take an explicit pipeline argument since we are also aiming to avoid being a stateful api like Cairo and OpenGL. Being stateless makes it easier for orthogonal components to share access to the GPU. Being stateless should also minimize any impedance miss-match for those wanting to build higher level stateless apis on top of Cogl. Note: none of the legacy, global state options such as cogl_set_depth_test_enabled(), cogl_set_backface_culling_enabled() or cogl_program_use() are supported by these new drawing apis and if set will simply be silently ignored. Reviewed-by: Neil Roberts <neil@linux.intel.com>
2012-01-08 02:59:04 +00:00
_cogl_flush_attributes_state (CoglFramebuffer *framebuffer,
CoglPipeline *pipeline,
CoglDrawFlags flags,
CoglAttribute **attributes,
int n_attributes);
cogl-vertex-attribute: Use glVertexAttribPointer on GLES2 When the GLES2 wrapper is removed we can't use the fixed function API such as glColorPointer to set the builtin attributes. Instead the GLSL progend now maintains a cache of attribute locations that are queried with glGetAttribLocation. The code that previously maintained a cache of the enabled texture coord arrays has been modified to also cache the enabled vertex attributes under GLES2. The vertex attribute API is now the only place that is using this cache so it has been moved into cogl-vertex-attribute.c
2010-12-03 17:46:16 +00:00
cogl: rename CoglVertexAttribute CoglAttribute This is part of a broader cleanup of some of the experimental Cogl API. One of the reasons for this particular rename is to reduce the verbosity of using the API. Another reason is that CoglVertexArray is going to be renamed CoglAttributeBuffer and we want to help emphasize the relationship between CoglAttributes and CoglAttributeBuffers.
2011-01-20 19:31:53 +00:00
#endif /* __COGL_ATTRIBUTE_PRIVATE_H */
cogl: Adds experimental CoglVertexAttribute API A CoglVertexAttribute defines a single attribute contained in a CoglVertexArray. I.e. a CoglVertexArray is simply a buffer of N bytes intended for containing a collection of attributes (position, color, normals etc) and a CoglVertexAttribute defines one such attribute by specifying its start offset in the array, its type, the number of components and the stride etc.
2010-10-12 11:53:10 +00:00
Reference in New Issue Copy Permalink