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mutter/cogl/cogl-glsl-shader-boilerplate.h

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cogl-shader: Prepend boilerplate for portable shaders We now prepend a set of defines to any given GLSL shader so that we can define builtin uniforms/attributes within the "cogl" namespace that we can use to provide compatibility across a range of the earlier versions of GLSL. This updates test-cogl-shader-glsl.c and test-shader.c so they no longer needs to special case GLES vs GL when splicing together its shaders as well as the blur, colorize and desaturate effects. To get a feel for the new, portable uniform/attribute names here are the defines for OpenGL vertex shaders: #define cogl_position_in gl_Vertex #define cogl_color_in gl_Color #define cogl_tex_coord_in gl_MultiTexCoord0 #define cogl_tex_coord0_in gl_MultiTexCoord0 #define cogl_tex_coord1_in gl_MultiTexCoord1 #define cogl_tex_coord2_in gl_MultiTexCoord2 #define cogl_tex_coord3_in gl_MultiTexCoord3 #define cogl_tex_coord4_in gl_MultiTexCoord4 #define cogl_tex_coord5_in gl_MultiTexCoord5 #define cogl_tex_coord6_in gl_MultiTexCoord6 #define cogl_tex_coord7_in gl_MultiTexCoord7 #define cogl_normal_in gl_Normal #define cogl_position_out gl_Position #define cogl_point_size_out gl_PointSize #define cogl_color_out gl_FrontColor #define cogl_tex_coord_out gl_TexCoord #define cogl_modelview_matrix gl_ModelViewMatrix #define cogl_modelview_projection_matrix gl_ModelViewProjectionMatrix #define cogl_projection_matrix gl_ProjectionMatrix #define cogl_texture_matrix gl_TextureMatrix And for fragment shaders we have: #define cogl_color_in gl_Color #define cogl_tex_coord_in gl_TexCoord #define cogl_color_out gl_FragColor #define cogl_depth_out gl_FragDepth #define cogl_front_facing gl_FrontFacing
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/*
* 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>
*/
#ifndef __COGL_SHADER_BOILERPLATE_H
#define __COGL_SHADER_BOILERPLATE_H
Unify a lot of gles2 vs gl glsl code Since we used to support hybrid fixed-function + glsl pipelines when running with OpenGL there were numerous differences in how we handled codegen and uniform updates between GLES2 and full OpenGL. Now that we only support end-to-end glsl pipelines this patch can largely unify how we handle GLES2 and OpenGL. Most notably we now never use the builtin attribute names. This should also make it easy for us to support creating strict OpenGL 3.1 contexts where the builtin names have been removed. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 2701b93f159bf2d3387cedf2d06fe921ad5641f3)
2012-09-23 08:32:36 -04:00
#define _COGL_COMMON_SHADER_BOILERPLATE \
cogl-shader-boilerplate: Move the uniforms to the common code The builtin uniforms are accessible from either the vertex shader or the fragment shader so we should define them in the common section. This doesn't really matter for the current list of uniforms because it's pretty unlikely that you'd want to access the matrices from the fragment shader, but for other builtins such as the lighting material properties it makes sense.
2011-01-12 08:47:55 -05:00
"#define COGL_VERSION 100\n" \
"\n" \
"uniform mat4 cogl_modelview_matrix;\n" \
"uniform mat4 cogl_modelview_projection_matrix;\n" \
"uniform mat4 cogl_projection_matrix;\n" \
"uniform float cogl_point_size_in;\n"
cogl-shader-boilerplate: Add more builtins for GLES2 Some builtin attributes such as the matrix uniforms and some varyings were missing from the boilerplate for GLES2. This also moves the texture matrix and texture coord attribute declarations to cogl-shader.c so that they can be dynamically defined depending on the number of texture coord arrays enabled.
2010-12-02 17:08:51 -05:00
/* This declares all of the variables that we might need. This is
Unify a lot of gles2 vs gl glsl code Since we used to support hybrid fixed-function + glsl pipelines when running with OpenGL there were numerous differences in how we handled codegen and uniform updates between GLES2 and full OpenGL. Now that we only support end-to-end glsl pipelines this patch can largely unify how we handle GLES2 and OpenGL. Most notably we now never use the builtin attribute names. This should also make it easy for us to support creating strict OpenGL 3.1 contexts where the builtin names have been removed. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 2701b93f159bf2d3387cedf2d06fe921ad5641f3)
2012-09-23 08:32:36 -04:00
* working on the assumption that the compiler will optimise them out
* if they are not actually used. The GLSL spec at least implies that
* this will happen for varyings but it doesn't explicitly so for
* attributes */
#define _COGL_VERTEX_SHADER_BOILERPLATE \
_COGL_COMMON_SHADER_BOILERPLATE \
cogl-shader: Prepend boilerplate for portable shaders We now prepend a set of defines to any given GLSL shader so that we can define builtin uniforms/attributes within the "cogl" namespace that we can use to provide compatibility across a range of the earlier versions of GLSL. This updates test-cogl-shader-glsl.c and test-shader.c so they no longer needs to special case GLES vs GL when splicing together its shaders as well as the blur, colorize and desaturate effects. To get a feel for the new, portable uniform/attribute names here are the defines for OpenGL vertex shaders: #define cogl_position_in gl_Vertex #define cogl_color_in gl_Color #define cogl_tex_coord_in gl_MultiTexCoord0 #define cogl_tex_coord0_in gl_MultiTexCoord0 #define cogl_tex_coord1_in gl_MultiTexCoord1 #define cogl_tex_coord2_in gl_MultiTexCoord2 #define cogl_tex_coord3_in gl_MultiTexCoord3 #define cogl_tex_coord4_in gl_MultiTexCoord4 #define cogl_tex_coord5_in gl_MultiTexCoord5 #define cogl_tex_coord6_in gl_MultiTexCoord6 #define cogl_tex_coord7_in gl_MultiTexCoord7 #define cogl_normal_in gl_Normal #define cogl_position_out gl_Position #define cogl_point_size_out gl_PointSize #define cogl_color_out gl_FrontColor #define cogl_tex_coord_out gl_TexCoord #define cogl_modelview_matrix gl_ModelViewMatrix #define cogl_modelview_projection_matrix gl_ModelViewProjectionMatrix #define cogl_projection_matrix gl_ProjectionMatrix #define cogl_texture_matrix gl_TextureMatrix And for fragment shaders we have: #define cogl_color_in gl_Color #define cogl_tex_coord_in gl_TexCoord #define cogl_color_out gl_FragColor #define cogl_depth_out gl_FragDepth #define cogl_front_facing gl_FrontFacing
2010-07-23 12:46:41 -04:00
"#define cogl_color_out _cogl_color\n" \
cogl-shader-boilerplate: Add more builtins for GLES2 Some builtin attributes such as the matrix uniforms and some varyings were missing from the boilerplate for GLES2. This also moves the texture matrix and texture coord attribute declarations to cogl-shader.c so that they can be dynamically defined depending on the number of texture coord arrays enabled.
2010-12-02 17:08:51 -05:00
"varying vec4 _cogl_color;\n" \
"#define cogl_position_out gl_Position\n" \
"#define cogl_point_size_out gl_PointSize\n" \
"\n" \
"attribute vec4 cogl_color_in;\n" \
cogl-shader-boilerplate: Don't put the color attrib in location 0 Due to Mesa bug 28585 calling glVertexAttrib with attrib location 0 doesn't appear to work. This patch just reorders the vertex and color attributes in the shader in the hope that Mesa will assign the color attribute to a different location.
2010-12-07 07:33:39 -05:00
"attribute vec4 cogl_position_in;\n" \
cogl-shader-boilerplate: Add more builtins for GLES2 Some builtin attributes such as the matrix uniforms and some varyings were missing from the boilerplate for GLES2. This also moves the texture matrix and texture coord attribute declarations to cogl-shader.c so that they can be dynamically defined depending on the number of texture coord arrays enabled.
2010-12-02 17:08:51 -05:00
"#define cogl_tex_coord_in cogl_tex_coord0_in;\n" \
cogl-shader-boilerplate: Move the uniforms to the common code The builtin uniforms are accessible from either the vertex shader or the fragment shader so we should define them in the common section. This doesn't really matter for the current list of uniforms because it's pretty unlikely that you'd want to access the matrices from the fragment shader, but for other builtins such as the lighting material properties it makes sense.
2011-01-12 08:47:55 -05:00
"attribute vec3 cogl_normal_in;\n"
cogl-shader: Prepend boilerplate for portable shaders We now prepend a set of defines to any given GLSL shader so that we can define builtin uniforms/attributes within the "cogl" namespace that we can use to provide compatibility across a range of the earlier versions of GLSL. This updates test-cogl-shader-glsl.c and test-shader.c so they no longer needs to special case GLES vs GL when splicing together its shaders as well as the blur, colorize and desaturate effects. To get a feel for the new, portable uniform/attribute names here are the defines for OpenGL vertex shaders: #define cogl_position_in gl_Vertex #define cogl_color_in gl_Color #define cogl_tex_coord_in gl_MultiTexCoord0 #define cogl_tex_coord0_in gl_MultiTexCoord0 #define cogl_tex_coord1_in gl_MultiTexCoord1 #define cogl_tex_coord2_in gl_MultiTexCoord2 #define cogl_tex_coord3_in gl_MultiTexCoord3 #define cogl_tex_coord4_in gl_MultiTexCoord4 #define cogl_tex_coord5_in gl_MultiTexCoord5 #define cogl_tex_coord6_in gl_MultiTexCoord6 #define cogl_tex_coord7_in gl_MultiTexCoord7 #define cogl_normal_in gl_Normal #define cogl_position_out gl_Position #define cogl_point_size_out gl_PointSize #define cogl_color_out gl_FrontColor #define cogl_tex_coord_out gl_TexCoord #define cogl_modelview_matrix gl_ModelViewMatrix #define cogl_modelview_projection_matrix gl_ModelViewProjectionMatrix #define cogl_projection_matrix gl_ProjectionMatrix #define cogl_texture_matrix gl_TextureMatrix And for fragment shaders we have: #define cogl_color_in gl_Color #define cogl_tex_coord_in gl_TexCoord #define cogl_color_out gl_FragColor #define cogl_depth_out gl_FragDepth #define cogl_front_facing gl_FrontFacing
2010-07-23 12:46:41 -04:00
Unify a lot of gles2 vs gl glsl code Since we used to support hybrid fixed-function + glsl pipelines when running with OpenGL there were numerous differences in how we handled codegen and uniform updates between GLES2 and full OpenGL. Now that we only support end-to-end glsl pipelines this patch can largely unify how we handle GLES2 and OpenGL. Most notably we now never use the builtin attribute names. This should also make it easy for us to support creating strict OpenGL 3.1 contexts where the builtin names have been removed. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 2701b93f159bf2d3387cedf2d06fe921ad5641f3)
2012-09-23 08:32:36 -04:00
#define _COGL_FRAGMENT_SHADER_BOILERPLATE \
cogl-shader: Prepend boilerplate for portable shaders We now prepend a set of defines to any given GLSL shader so that we can define builtin uniforms/attributes within the "cogl" namespace that we can use to provide compatibility across a range of the earlier versions of GLSL. This updates test-cogl-shader-glsl.c and test-shader.c so they no longer needs to special case GLES vs GL when splicing together its shaders as well as the blur, colorize and desaturate effects. To get a feel for the new, portable uniform/attribute names here are the defines for OpenGL vertex shaders: #define cogl_position_in gl_Vertex #define cogl_color_in gl_Color #define cogl_tex_coord_in gl_MultiTexCoord0 #define cogl_tex_coord0_in gl_MultiTexCoord0 #define cogl_tex_coord1_in gl_MultiTexCoord1 #define cogl_tex_coord2_in gl_MultiTexCoord2 #define cogl_tex_coord3_in gl_MultiTexCoord3 #define cogl_tex_coord4_in gl_MultiTexCoord4 #define cogl_tex_coord5_in gl_MultiTexCoord5 #define cogl_tex_coord6_in gl_MultiTexCoord6 #define cogl_tex_coord7_in gl_MultiTexCoord7 #define cogl_normal_in gl_Normal #define cogl_position_out gl_Position #define cogl_point_size_out gl_PointSize #define cogl_color_out gl_FrontColor #define cogl_tex_coord_out gl_TexCoord #define cogl_modelview_matrix gl_ModelViewMatrix #define cogl_modelview_projection_matrix gl_ModelViewProjectionMatrix #define cogl_projection_matrix gl_ProjectionMatrix #define cogl_texture_matrix gl_TextureMatrix And for fragment shaders we have: #define cogl_color_in gl_Color #define cogl_tex_coord_in gl_TexCoord #define cogl_color_out gl_FragColor #define cogl_depth_out gl_FragDepth #define cogl_front_facing gl_FrontFacing
2010-07-23 12:46:41 -04:00
"#if __VERSION__ == 100\n" \
"precision highp float;\n" \
"#endif\n" \
Unify a lot of gles2 vs gl glsl code Since we used to support hybrid fixed-function + glsl pipelines when running with OpenGL there were numerous differences in how we handled codegen and uniform updates between GLES2 and full OpenGL. Now that we only support end-to-end glsl pipelines this patch can largely unify how we handle GLES2 and OpenGL. Most notably we now never use the builtin attribute names. This should also make it easy for us to support creating strict OpenGL 3.1 contexts where the builtin names have been removed. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 2701b93f159bf2d3387cedf2d06fe921ad5641f3)
2012-09-23 08:32:36 -04:00
_COGL_COMMON_SHADER_BOILERPLATE \
cogl-shader: Prepend boilerplate for portable shaders We now prepend a set of defines to any given GLSL shader so that we can define builtin uniforms/attributes within the "cogl" namespace that we can use to provide compatibility across a range of the earlier versions of GLSL. This updates test-cogl-shader-glsl.c and test-shader.c so they no longer needs to special case GLES vs GL when splicing together its shaders as well as the blur, colorize and desaturate effects. To get a feel for the new, portable uniform/attribute names here are the defines for OpenGL vertex shaders: #define cogl_position_in gl_Vertex #define cogl_color_in gl_Color #define cogl_tex_coord_in gl_MultiTexCoord0 #define cogl_tex_coord0_in gl_MultiTexCoord0 #define cogl_tex_coord1_in gl_MultiTexCoord1 #define cogl_tex_coord2_in gl_MultiTexCoord2 #define cogl_tex_coord3_in gl_MultiTexCoord3 #define cogl_tex_coord4_in gl_MultiTexCoord4 #define cogl_tex_coord5_in gl_MultiTexCoord5 #define cogl_tex_coord6_in gl_MultiTexCoord6 #define cogl_tex_coord7_in gl_MultiTexCoord7 #define cogl_normal_in gl_Normal #define cogl_position_out gl_Position #define cogl_point_size_out gl_PointSize #define cogl_color_out gl_FrontColor #define cogl_tex_coord_out gl_TexCoord #define cogl_modelview_matrix gl_ModelViewMatrix #define cogl_modelview_projection_matrix gl_ModelViewProjectionMatrix #define cogl_projection_matrix gl_ProjectionMatrix #define cogl_texture_matrix gl_TextureMatrix And for fragment shaders we have: #define cogl_color_in gl_Color #define cogl_tex_coord_in gl_TexCoord #define cogl_color_out gl_FragColor #define cogl_depth_out gl_FragDepth #define cogl_front_facing gl_FrontFacing
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"\n" \
"varying vec4 _cogl_color;\n" \
"\n" \
"#define cogl_color_in _cogl_color\n" \
"\n" \
"#define cogl_color_out gl_FragColor\n" \
"#define cogl_depth_out gl_FragDepth\n" \
"\n" \
"#define cogl_front_facing gl_FrontFacing\n"
Unify a lot of gles2 vs gl glsl code Since we used to support hybrid fixed-function + glsl pipelines when running with OpenGL there were numerous differences in how we handled codegen and uniform updates between GLES2 and full OpenGL. Now that we only support end-to-end glsl pipelines this patch can largely unify how we handle GLES2 and OpenGL. Most notably we now never use the builtin attribute names. This should also make it easy for us to support creating strict OpenGL 3.1 contexts where the builtin names have been removed. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 2701b93f159bf2d3387cedf2d06fe921ad5641f3)
2012-09-23 08:32:36 -04:00
#if 0
/* GLSL 1.2 has a bottom left origin, though later versions
* allow use of an origin_upper_left keyword which would be
* more appropriate for Cogl. */
"#define coglFragCoord gl_FragCoord\n"
#endif
cogl-shader: Prepend boilerplate for portable shaders We now prepend a set of defines to any given GLSL shader so that we can define builtin uniforms/attributes within the "cogl" namespace that we can use to provide compatibility across a range of the earlier versions of GLSL. This updates test-cogl-shader-glsl.c and test-shader.c so they no longer needs to special case GLES vs GL when splicing together its shaders as well as the blur, colorize and desaturate effects. To get a feel for the new, portable uniform/attribute names here are the defines for OpenGL vertex shaders: #define cogl_position_in gl_Vertex #define cogl_color_in gl_Color #define cogl_tex_coord_in gl_MultiTexCoord0 #define cogl_tex_coord0_in gl_MultiTexCoord0 #define cogl_tex_coord1_in gl_MultiTexCoord1 #define cogl_tex_coord2_in gl_MultiTexCoord2 #define cogl_tex_coord3_in gl_MultiTexCoord3 #define cogl_tex_coord4_in gl_MultiTexCoord4 #define cogl_tex_coord5_in gl_MultiTexCoord5 #define cogl_tex_coord6_in gl_MultiTexCoord6 #define cogl_tex_coord7_in gl_MultiTexCoord7 #define cogl_normal_in gl_Normal #define cogl_position_out gl_Position #define cogl_point_size_out gl_PointSize #define cogl_color_out gl_FrontColor #define cogl_tex_coord_out gl_TexCoord #define cogl_modelview_matrix gl_ModelViewMatrix #define cogl_modelview_projection_matrix gl_ModelViewProjectionMatrix #define cogl_projection_matrix gl_ProjectionMatrix #define cogl_texture_matrix gl_TextureMatrix And for fragment shaders we have: #define cogl_color_in gl_Color #define cogl_tex_coord_in gl_TexCoord #define cogl_color_out gl_FragColor #define cogl_depth_out gl_FragDepth #define cogl_front_facing gl_FrontFacing
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#endif /* __COGL_SHADER_BOILERPLATE_H */
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