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763c1de2ab
Some drivers have good support for GLSL but don't have the complete set of features needed to advertise GL 2.0 support. We should accept the three old GLSL extensions (GL_ARB_shader_objects, GL_ARB_vertex_shader and GL_ARB_fragment_shader) to support shaders on these drivers. This patch splits the shader functions into four sections :- those that are provided only in GL 2.0, those that have the same name in the shader objects extension, those that are provided by the vertex shader extension (they all share the same name) and those that have a different name in the shader objects extension. If GL 2.0 is not supported but all three of the extensions are then the pointers to the GL2-only functions will be replaced to point to the equivalent functions from the extensions. That way the rest of the Cogl source doesn't have to worry about the name differences. https://bugzilla.gnome.org/show_bug.cgi?id=677078 Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit 71ecb51bd20dc3053b4221961b57e5a2b1029bdf)
280 lines
12 KiB
C
280 lines
12 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2009, 2011 Intel Corporation.
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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, see <http://www.gnu.org/licenses/>.
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*
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*
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*/
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/* This is included multiple times with different definitions for
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* these macros. The macros are given the following arguments:
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*
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* COGL_EXT_BEGIN:
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*
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* @name: a unique symbol name for this feature
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*
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* @min_gl_major: the major part of the minimum GL version where these
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* functions are available in core, or 255 if it isn't available in
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* any version.
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* @min_gl_minor: the minor part of the minimum GL version where these
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* functions are available in core, or 255 if it isn't available in
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* any version.
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*
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* @gles_availability: flags to specify which versions of GLES the
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* functions are available in. Should be a combination of
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* COGL_EXT_IN_GLES and COGL_EXT_IN_GLES2.
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*
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* @extension_suffixes: A zero-separated list of suffixes in a
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* string. These are appended to the extension name to get a complete
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* extension name to try. The suffix is also appended to all of the
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* function names. The suffix can optionally include a ':' to specify
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* an alternate suffix for the function names.
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*
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* @extension_names: A list of extension names to try. If any of these
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* extensions match then it will be used.
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*/
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/* This lists functions that are unique to GL 2.0 or GLES 2.0 and are
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* not in the old GLSL extensions */
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COGL_EXT_BEGIN (shaders_glsl_2_only, 2, 0,
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COGL_EXT_IN_GLES2,
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"\0",
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"\0")
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COGL_EXT_FUNCTION (GLuint, glCreateProgram,
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(void))
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COGL_EXT_FUNCTION (GLuint, glCreateShader,
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(GLenum shaderType))
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COGL_EXT_FUNCTION (void, glDeleteShader,
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(GLuint shader))
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COGL_EXT_FUNCTION (void, glAttachShader,
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(GLuint program,
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GLuint shader))
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COGL_EXT_FUNCTION (void, glUseProgram,
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(GLuint program))
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COGL_EXT_FUNCTION (void, glDeleteProgram,
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(GLuint program))
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COGL_EXT_FUNCTION (void, glGetShaderInfoLog,
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(GLuint shader,
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GLsizei maxLength,
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GLsizei *length,
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char *infoLog))
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COGL_EXT_FUNCTION (void, glGetProgramInfoLog,
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(GLuint program,
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GLsizei bufSize,
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GLsizei *length,
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char *infoLog))
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COGL_EXT_FUNCTION (void, glGetShaderiv,
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(GLuint shader,
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GLenum pname,
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GLint *params))
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COGL_EXT_FUNCTION (void, glGetProgramiv,
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(GLuint program,
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GLenum pname,
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GLint *params))
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COGL_EXT_FUNCTION (void, glDetachShader,
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(GLuint program, GLuint shader))
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COGL_EXT_FUNCTION (void, glGetAttachedShaders,
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(GLuint program,
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GLsizei maxcount,
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GLsizei* count,
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GLuint* shaders))
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COGL_EXT_FUNCTION (GLboolean, glIsShader,
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(GLuint shader))
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COGL_EXT_FUNCTION (GLboolean, glIsProgram,
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(GLuint program))
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COGL_EXT_END ()
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/* These functions are provided by GL_ARB_shader_objects or are in GL
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* 2.0 core */
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COGL_EXT_BEGIN (shader_objects_or_gl2, 2, 0,
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COGL_EXT_IN_GLES2,
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"ARB\0",
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"shader_objects\0")
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COGL_EXT_FUNCTION (void, glShaderSource,
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(GLuint shader,
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GLsizei count,
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const char * const *string,
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const GLint *length))
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COGL_EXT_FUNCTION (void, glCompileShader,
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(GLuint shader))
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COGL_EXT_FUNCTION (void, glLinkProgram,
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(GLuint program))
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COGL_EXT_FUNCTION (GLint, glGetUniformLocation,
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(GLuint program,
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const char *name))
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COGL_EXT_FUNCTION (void, glUniform1f,
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(GLint location,
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GLfloat v0))
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COGL_EXT_FUNCTION (void, glUniform2f,
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(GLint location,
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GLfloat v0,
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GLfloat v1))
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COGL_EXT_FUNCTION (void, glUniform3f,
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(GLint location,
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GLfloat v0,
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GLfloat v1,
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GLfloat v2))
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COGL_EXT_FUNCTION (void, glUniform4f,
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(GLint location,
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GLfloat v0,
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GLfloat v1,
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GLfloat v2,
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GLfloat v3))
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COGL_EXT_FUNCTION (void, glUniform1fv,
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(GLint location,
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GLsizei count,
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const GLfloat * value))
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COGL_EXT_FUNCTION (void, glUniform2fv,
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(GLint location,
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GLsizei count,
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const GLfloat * value))
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COGL_EXT_FUNCTION (void, glUniform3fv,
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(GLint location,
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GLsizei count,
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const GLfloat * value))
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COGL_EXT_FUNCTION (void, glUniform4fv,
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(GLint location,
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GLsizei count,
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const GLfloat * value))
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COGL_EXT_FUNCTION (void, glUniform1i,
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(GLint location,
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GLint v0))
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COGL_EXT_FUNCTION (void, glUniform2i,
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(GLint location,
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GLint v0,
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GLint v1))
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COGL_EXT_FUNCTION (void, glUniform3i,
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(GLint location,
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GLint v0,
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GLint v1,
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GLint v2))
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COGL_EXT_FUNCTION (void, glUniform4i,
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(GLint location,
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GLint v0,
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GLint v1,
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GLint v2,
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GLint v3))
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COGL_EXT_FUNCTION (void, glUniform1iv,
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(GLint location,
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GLsizei count,
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const GLint * value))
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COGL_EXT_FUNCTION (void, glUniform2iv,
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(GLint location,
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GLsizei count,
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const GLint * value))
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COGL_EXT_FUNCTION (void, glUniform3iv,
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(GLint location,
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GLsizei count,
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const GLint * value))
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COGL_EXT_FUNCTION (void, glUniform4iv,
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(GLint location,
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GLsizei count,
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const GLint * value))
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COGL_EXT_FUNCTION (void, glUniformMatrix2fv,
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(GLint location,
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GLsizei count,
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GLboolean transpose,
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const GLfloat *value))
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COGL_EXT_FUNCTION (void, glUniformMatrix3fv,
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(GLint location,
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GLsizei count,
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GLboolean transpose,
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const GLfloat *value))
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COGL_EXT_FUNCTION (void, glUniformMatrix4fv,
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(GLint location,
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GLsizei count,
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GLboolean transpose,
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const GLfloat *value))
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COGL_EXT_FUNCTION (void, glGetUniformfv,
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(GLuint program,
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GLint location,
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GLfloat *params))
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COGL_EXT_FUNCTION (void, glGetUniformiv,
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(GLuint program,
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GLint location,
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GLint *params))
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COGL_EXT_FUNCTION (void, glGetActiveUniform,
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(GLuint program,
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GLuint index,
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GLsizei bufsize,
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GLsizei* length,
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GLint* size,
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GLenum* type,
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GLchar* name))
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COGL_EXT_FUNCTION (void, glGetShaderSource,
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(GLuint shader,
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GLsizei bufsize,
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GLsizei* length,
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GLchar* source))
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COGL_EXT_FUNCTION (void, glValidateProgram, (GLuint program))
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COGL_EXT_END ()
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/* These functions are provided by GL_ARB_vertex_shader or are in GL
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* 2.0 core */
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COGL_EXT_BEGIN (vertex_shaders, 2, 0,
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COGL_EXT_IN_GLES2,
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"ARB\0",
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"vertex_shader\0")
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COGL_EXT_FUNCTION (void, glVertexAttribPointer,
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(GLuint index,
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GLint size,
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GLenum type,
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GLboolean normalized,
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GLsizei stride,
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const GLvoid *pointer))
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COGL_EXT_FUNCTION (void, glEnableVertexAttribArray,
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(GLuint index))
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COGL_EXT_FUNCTION (void, glDisableVertexAttribArray,
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(GLuint index))
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COGL_EXT_FUNCTION (void, glVertexAttrib1f, (GLuint indx, GLfloat x))
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COGL_EXT_FUNCTION (void, glVertexAttrib1fv,
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(GLuint indx, const GLfloat* values))
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COGL_EXT_FUNCTION (void, glVertexAttrib2f, (GLuint indx, GLfloat x, GLfloat y))
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COGL_EXT_FUNCTION (void, glVertexAttrib2fv,
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(GLuint indx, const GLfloat* values))
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COGL_EXT_FUNCTION (void, glVertexAttrib3f,
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(GLuint indx, GLfloat x, GLfloat y, GLfloat z))
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COGL_EXT_FUNCTION (void, glVertexAttrib3fv,
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(GLuint indx, const GLfloat* values))
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COGL_EXT_FUNCTION (void, glVertexAttrib4f,
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(GLuint index, GLfloat x, GLfloat y, GLfloat z, GLfloat w))
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COGL_EXT_FUNCTION (void, glVertexAttrib4fv,
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(GLuint indx, const GLfloat* values))
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COGL_EXT_FUNCTION (void, glGetVertexAttribfv,
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(GLuint index, GLenum pname, GLfloat* params))
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COGL_EXT_FUNCTION (void, glGetVertexAttribiv,
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(GLuint index, GLenum pname, GLint* params))
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COGL_EXT_FUNCTION (void, glGetVertexAttribPointerv,
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(GLuint index, GLenum pname, GLvoid** pointer))
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COGL_EXT_FUNCTION (GLint, glGetAttribLocation,
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(GLuint program, const char *name))
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COGL_EXT_FUNCTION (void, glBindAttribLocation,
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(GLuint program,
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GLuint index,
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const GLchar* name))
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COGL_EXT_FUNCTION (void, glGetActiveAttrib,
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(GLuint program,
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GLuint index,
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GLsizei bufsize,
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GLsizei* length,
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GLint* size,
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GLenum* type,
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GLchar* name))
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COGL_EXT_END ()
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