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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#ifndef __COGL_CONTEXT_H
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#define __COGL_CONTEXT_H
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#include "cogl-primitives.h"
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2008-12-04 08:45:09 -05:00
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#include "cogl-clip-stack.h"
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2009-02-24 13:51:25 -05:00
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#include "cogl-matrix-stack.h"
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#include "cogl-current-matrix.h"
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2008-04-25 09:37:36 -04:00
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2008-11-18 11:24:09 -05:00
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typedef struct
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{
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GLfloat v[3];
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GLfloat t[2];
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GLubyte c[4];
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} CoglTextureGLVertex;
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2009-02-19 22:37:08 -05:00
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typedef struct
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{
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CoglBufferTarget target;
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CoglHandle offscreen;
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} CoglDrawBufferState;
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2008-04-25 09:37:36 -04:00
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typedef struct
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{
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/* Features cache */
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CoglFeatureFlags feature_flags;
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gboolean features_cached;
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2008-12-23 11:29:29 -05:00
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2008-04-25 09:37:36 -04:00
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/* Enable cache */
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gulong enable_flags;
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guint8 color_alpha;
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2008-10-27 10:36:52 -04:00
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gboolean enable_backface_culling;
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2008-12-23 11:29:29 -05:00
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2009-02-24 13:51:25 -05:00
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gboolean indirect;
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/* Client-side matrix stack or NULL if none */
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CoglMatrixMode matrix_mode;
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CoglMatrixStack *modelview_stack;
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2008-06-02 08:34:10 -04:00
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/* Cache of inverse projection matrix */
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2009-01-28 09:09:51 -05:00
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float inverse_projection[16];
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2008-12-23 11:29:29 -05:00
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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
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/* Materials */
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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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CoglHandle default_material;
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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
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CoglHandle 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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2009-01-28 09:09:51 -05:00
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/* Textures */
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CoglHandle default_gl_texture_2d_tex;
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CoglHandle default_gl_texture_rect_tex;
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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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/* Batching geometry... */
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/* We journal the texture rectangles we want to submit to OpenGL so
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* we have an oppertunity to optimise the final order so that we
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* can batch things together. */
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GArray *journal;
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GArray *logged_vertices;
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GArray *polygon_vertices;
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/* Some simple caching, to minimize state changes... */
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2008-12-23 18:22:40 -05:00
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CoglHandle current_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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gulong current_material_flags;
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GArray *current_layers;
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guint n_texcoord_arrays_enabled;
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2008-12-11 10:33:38 -05:00
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2008-04-25 09:37:36 -04:00
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/* Framebuffer objects */
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2009-02-19 22:37:08 -05:00
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GSList *draw_buffer_stack;
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2008-04-29 12:10:37 -04:00
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2008-12-04 08:45:09 -05:00
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/* Clip stack */
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CoglClipStackState clip;
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2008-12-23 11:29:29 -05:00
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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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/* Primitives */
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floatVec2 path_start;
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floatVec2 path_pen;
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GArray *path_nodes;
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guint last_path;
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floatVec2 path_nodes_min;
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floatVec2 path_nodes_max;
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CoglHandle stencil_material;
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2009-05-28 08:47:18 -04:00
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/* Pre-generated VBOs containing indices to generate GL_TRIANGLES
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out of a vertex array of quads */
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CoglHandle quad_indices_byte;
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guint quad_indices_short_len;
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CoglHandle quad_indices_short;
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2008-04-25 09:37:36 -04:00
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/* Relying on glext.h to define these */
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2008-05-12 13:20:22 -04:00
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COGL_PFNGLGENRENDERBUFFERSEXTPROC pf_glGenRenderbuffersEXT;
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2008-08-01 08:23:57 -04:00
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COGL_PFNGLDELETERENDERBUFFERSEXTPROC pf_glDeleteRenderbuffersEXT;
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2008-05-12 13:20:22 -04:00
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COGL_PFNGLBINDRENDERBUFFEREXTPROC pf_glBindRenderbufferEXT;
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COGL_PFNGLRENDERBUFFERSTORAGEEXTPROC pf_glRenderbufferStorageEXT;
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COGL_PFNGLGENFRAMEBUFFERSEXTPROC pf_glGenFramebuffersEXT;
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COGL_PFNGLBINDFRAMEBUFFEREXTPROC pf_glBindFramebufferEXT;
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COGL_PFNGLFRAMEBUFFERTEXTURE2DEXTPROC pf_glFramebufferTexture2DEXT;
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COGL_PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC pf_glFramebufferRenderbufferEXT;
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COGL_PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC pf_glCheckFramebufferStatusEXT;
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COGL_PFNGLDELETEFRAMEBUFFERSEXTPROC pf_glDeleteFramebuffersEXT;
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COGL_PFNGLBLITFRAMEBUFFEREXTPROC pf_glBlitFramebufferEXT;
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COGL_PFNGLRENDERBUFFERSTORAGEMULTISAMPLEEXTPROC pf_glRenderbufferStorageMultisampleEXT;
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2009-06-04 11:04:57 -04:00
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COGL_PFNGLGENERATEMIPMAPEXTPROC pf_glGenerateMipmapEXT;
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2008-12-23 11:29:29 -05:00
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2008-05-12 13:20:22 -04:00
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COGL_PFNGLCREATEPROGRAMOBJECTARBPROC pf_glCreateProgramObjectARB;
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COGL_PFNGLCREATESHADEROBJECTARBPROC pf_glCreateShaderObjectARB;
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COGL_PFNGLSHADERSOURCEARBPROC pf_glShaderSourceARB;
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COGL_PFNGLCOMPILESHADERARBPROC pf_glCompileShaderARB;
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COGL_PFNGLATTACHOBJECTARBPROC pf_glAttachObjectARB;
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COGL_PFNGLLINKPROGRAMARBPROC pf_glLinkProgramARB;
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COGL_PFNGLUSEPROGRAMOBJECTARBPROC pf_glUseProgramObjectARB;
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COGL_PFNGLGETUNIFORMLOCATIONARBPROC pf_glGetUniformLocationARB;
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COGL_PFNGLDELETEOBJECTARBPROC pf_glDeleteObjectARB;
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COGL_PFNGLGETINFOLOGARBPROC pf_glGetInfoLogARB;
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COGL_PFNGLGETOBJECTPARAMETERIVARBPROC pf_glGetObjectParameterivARB;
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2008-11-18 10:08:40 -05:00
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2008-11-10 13:53:14 -05:00
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COGL_PFNGLVERTEXATTRIBPOINTERARBPROC pf_glVertexAttribPointerARB;
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COGL_PFNGLENABLEVERTEXATTRIBARRAYARBPROC pf_glEnableVertexAttribArrayARB;
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COGL_PFNGLDISABLEVERTEXATTRIBARRAYARBPROC pf_glDisableVertexAttribArrayARB;
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COGL_PFNGLGENBUFFERSARBPROC pf_glGenBuffersARB;
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COGL_PFNGLBINDBUFFERARBPROC pf_glBindBufferARB;
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COGL_PFNGLBUFFERDATAARBPROC pf_glBufferDataARB;
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2008-12-10 07:13:20 -05:00
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COGL_PFNGLBUFFERSUBDATAARBPROC pf_glBufferSubDataARB;
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2008-11-10 13:53:14 -05:00
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COGL_PFNGLMAPBUFFERARBPROC pf_glMapBufferARB;
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COGL_PFNGLUNMAPBUFFERARBPROC pf_glUnmapBufferARB;
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COGL_PFNGLDELETEBUFFERSARBPROC pf_glDeleteBuffersARB;
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2008-11-18 10:08:40 -05:00
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COGL_PFNGLUNIFORM1FARBPROC pf_glUniform1fARB;
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COGL_PFNGLUNIFORM2FARBPROC pf_glUniform2fARB;
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COGL_PFNGLUNIFORM3FARBPROC pf_glUniform3fARB;
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COGL_PFNGLUNIFORM4FARBPROC pf_glUniform4fARB;
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COGL_PFNGLUNIFORM1FVARBPROC pf_glUniform1fvARB;
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COGL_PFNGLUNIFORM2FVARBPROC pf_glUniform2fvARB;
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COGL_PFNGLUNIFORM3FVARBPROC pf_glUniform3fvARB;
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COGL_PFNGLUNIFORM4FVARBPROC pf_glUniform4fvARB;
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COGL_PFNGLUNIFORM1IARBPROC pf_glUniform1iARB;
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COGL_PFNGLUNIFORM2IARBPROC pf_glUniform2iARB;
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COGL_PFNGLUNIFORM3IARBPROC pf_glUniform3iARB;
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COGL_PFNGLUNIFORM4IARBPROC pf_glUniform4iARB;
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COGL_PFNGLUNIFORM1IVARBPROC pf_glUniform1ivARB;
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COGL_PFNGLUNIFORM2IVARBPROC pf_glUniform2ivARB;
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COGL_PFNGLUNIFORM3IVARBPROC pf_glUniform3ivARB;
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COGL_PFNGLUNIFORM4IVARBPROC pf_glUniform4ivARB;
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COGL_PFNGLUNIFORMMATRIX2FVARBPROC pf_glUniformMatrix2fvARB;
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COGL_PFNGLUNIFORMMATRIX3FVARBPROC pf_glUniformMatrix3fvARB;
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COGL_PFNGLUNIFORMMATRIX4FVARBPROC pf_glUniformMatrix4fvARB;
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2008-11-21 11:18:58 -05:00
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COGL_PFNGLDRAWRANGEELEMENTSPROC pf_glDrawRangeElements;
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2009-02-16 07:42:08 -05:00
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COGL_PFNGLACTIVETEXTUREPROC pf_glActiveTexture;
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COGL_PFNGLCLIENTACTIVETEXTUREPROC pf_glClientActiveTexture;
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2009-05-10 19:40:41 -04:00
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2009-06-04 06:50:06 -04:00
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COGL_PFNGLBLENDEQUATIONPROC pf_glBlendEquation;
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COGL_PFNGLBLENDCOLORPROC pf_glBlendColor;
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2009-05-10 19:40:41 -04:00
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COGL_PFNGLBLENDFUNCSEPARATEPROC pf_glBlendFuncSeparate;
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COGL_PFNGLBLENDEQUATIONSEPARATEPROC pf_glBlendEquationSeparate;
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2008-04-25 09:37:36 -04:00
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} CoglContext;
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CoglContext *
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_cogl_context_get_default ();
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/* Obtains the context and returns retval if NULL */
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#define _COGL_GET_CONTEXT(ctxvar, retval) \
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CoglContext *ctxvar = _cogl_context_get_default (); \
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if (ctxvar == NULL) return retval;
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2008-12-23 11:29:29 -05:00
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#define NO_RETVAL
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2008-04-25 09:37:36 -04:00
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#endif /* __COGL_CONTEXT_H */
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