acc44161c1
As part of an effort to improve the architecture of CoglMaterial internally this overhauls how we flush layer state to OpenGL by adding a formal backend abstraction for fragment processing and further formalizing the CoglTextureUnit abstraction. There are three backends: "glsl", "arbfp" and "fixed". The fixed backend uses the OpenGL fixed function APIs to setup the fragment processing, the arbfp backend uses code generation to handle fragment processing using an ARBfp program, and the GLSL backend is currently only there as a formality to handle user programs associated with a material. (i.e. the glsl backend doesn't yet support code generation) The GLSL backend has highest precedence, then arbfp and finally the fixed. If a backend can't support some particular CoglMaterial feature then it will fallback to the next backend. This adds three new COGL_DEBUG options: * "disable-texturing" as expected should disable all texturing * "disable-arbfp" always make the arbfp backend fallback * "disable-glsl" always make the glsl backend fallback * "show-source" show code generated by the arbfp/glsl backends
370 lines
16 KiB
C
370 lines
16 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 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 */
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COGL_FEATURE_BEGIN (offscreen, 255, 255,
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/* for some reason the ARB version of this
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extension doesn't have an ARB suffix for the
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functions */
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"ARB:\0EXT\0",
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"framebuffer_object\0",
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COGL_FEATURE_OFFSCREEN,
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0)
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COGL_FEATURE_FUNCTION (void, glGenRenderbuffers,
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(GLsizei n,
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GLuint *renderbuffers))
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COGL_FEATURE_FUNCTION (void, glDeleteRenderbuffers,
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(GLsizei n,
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const GLuint *renderbuffers))
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COGL_FEATURE_FUNCTION (void, glBindRenderbuffer,
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(GLenum target,
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GLuint renderbuffer))
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COGL_FEATURE_FUNCTION (void, glRenderbufferStorage,
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(GLenum target,
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GLenum internalformat,
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GLsizei width,
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GLsizei height))
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COGL_FEATURE_FUNCTION (void, glGenFramebuffers,
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(GLsizei n,
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GLuint *framebuffers))
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COGL_FEATURE_FUNCTION (void, glBindFramebuffer,
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(GLenum target,
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GLuint framebuffer))
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COGL_FEATURE_FUNCTION (void, glFramebufferTexture2D,
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(GLenum target,
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GLenum attachment,
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GLenum textarget,
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GLuint texture,
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GLint level))
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COGL_FEATURE_FUNCTION (void, glFramebufferRenderbuffer,
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(GLenum target,
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GLenum attachment,
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GLenum renderbuffertarget,
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GLuint renderbuffer))
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COGL_FEATURE_FUNCTION (GLenum, glCheckFramebufferStatus,
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(GLenum target))
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COGL_FEATURE_FUNCTION (void, glDeleteFramebuffers,
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(GLsizei n,
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const GLuint *framebuffers))
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COGL_FEATURE_FUNCTION (void, glGenerateMipmap,
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(GLenum target))
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COGL_FEATURE_END ()
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COGL_FEATURE_BEGIN (offscreen_blit, 255, 255,
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"EXT\0",
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"framebuffer_blit\0",
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COGL_FEATURE_OFFSCREEN_BLIT,
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0)
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COGL_FEATURE_FUNCTION (void, glBlitFramebuffer,
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(GLint srcX0,
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GLint srcY0,
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GLint srcX1,
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GLint srcY1,
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GLint dstX0,
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GLint dstY0,
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GLint dstX1,
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GLint dstY1,
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GLbitfield mask,
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GLenum filter))
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COGL_FEATURE_END ()
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COGL_FEATURE_BEGIN (offscreen_multisample, 255, 255,
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"EXT\0",
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"framebuffer_multisample\0",
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COGL_FEATURE_OFFSCREEN_MULTISAMPLE,
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0)
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COGL_FEATURE_FUNCTION (void, glRenderbufferStorageMultisample,
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(GLenum target,
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GLsizei samples,
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GLenum internalformat,
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GLsizei width,
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GLsizei height))
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COGL_FEATURE_END ()
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COGL_FEATURE_BEGIN (read_pixels_async, 2, 1,
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"EXT\0",
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"pixel_buffer_object\0",
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COGL_FEATURE_PBOS,
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0)
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COGL_FEATURE_END ()
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/* ARB_fragment_program */
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COGL_FEATURE_BEGIN (arbfp, 255, 255,
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"ARB\0",
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"fragment_program\0",
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0,
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COGL_FEATURE_PRIVATE_ARB_FP)
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COGL_FEATURE_FUNCTION (void, glGenPrograms,
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(GLsizei n,
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GLuint *programs))
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COGL_FEATURE_FUNCTION (void, glDeletePrograms,
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(GLsizei n,
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GLuint *programs))
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COGL_FEATURE_FUNCTION (void, glBindProgram,
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(GLenum target,
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GLuint program))
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COGL_FEATURE_FUNCTION (void, glProgramString,
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(GLenum target,
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GLenum format,
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GLsizei len,
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const void *program))
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COGL_FEATURE_FUNCTION (void, glProgramLocalParameter4fv,
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(GLenum target,
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GLuint index,
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GLfloat *params))
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COGL_FEATURE_END ()
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/* The function names in OpenGL 2.0 are different so we can't easily
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just check for GL 2.0 */
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COGL_FEATURE_BEGIN (shaders_glsl, 2, 0,
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"\0",
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"\0",
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COGL_FEATURE_SHADERS_GLSL,
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0)
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COGL_FEATURE_FUNCTION (GLuint, glCreateProgram,
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(void))
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COGL_FEATURE_FUNCTION (GLuint, glCreateShader,
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(GLenum shaderType))
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COGL_FEATURE_FUNCTION (void, glShaderSource,
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(GLuint shader,
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GLsizei count,
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const GLchar **string,
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const GLint *length))
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COGL_FEATURE_FUNCTION (void, glCompileShader,
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(GLuint shader))
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COGL_FEATURE_FUNCTION (void, glDeleteShader,
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(GLuint shader))
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COGL_FEATURE_FUNCTION (void, glAttachShader,
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(GLuint program,
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GLuint shader))
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COGL_FEATURE_FUNCTION (void, glLinkProgram,
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(GLuint program))
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COGL_FEATURE_FUNCTION (void, glUseProgram,
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(GLuint program))
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COGL_FEATURE_FUNCTION (GLint, glGetUniformLocation,
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(GLuint program,
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const GLchar *name))
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COGL_FEATURE_FUNCTION (void, glDeleteProgram,
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(GLuint program))
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COGL_FEATURE_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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GLchar *infoLog))
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COGL_FEATURE_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_FEATURE_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_FEATURE_FUNCTION (void, glEnableVertexAttribArray,
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(GLuint index))
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COGL_FEATURE_FUNCTION (void, glDisableVertexAttribArray,
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(GLuint index))
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COGL_FEATURE_FUNCTION (void, glUniform1f,
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(GLint location,
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GLfloat v0))
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COGL_FEATURE_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_FEATURE_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_FEATURE_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_FEATURE_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_FEATURE_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_FEATURE_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_FEATURE_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_FEATURE_FUNCTION (void, glUniform1i,
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(GLint location,
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GLint v0))
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COGL_FEATURE_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_FEATURE_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_FEATURE_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_FEATURE_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_FEATURE_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_FEATURE_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_FEATURE_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_FEATURE_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_FEATURE_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_FEATURE_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_FEATURE_END ()
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COGL_FEATURE_BEGIN (vbos, 1, 5,
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"ARB\0",
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"vertex_buffer_object\0",
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COGL_FEATURE_VBOS,
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0)
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COGL_FEATURE_FUNCTION (void, glGenBuffers,
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(GLuint n,
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GLuint *buffers))
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COGL_FEATURE_FUNCTION (void, glBindBuffer,
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(GLenum target,
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GLuint buffer))
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COGL_FEATURE_FUNCTION (void, glBufferData,
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(GLenum target,
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GLsizeiptr size,
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const GLvoid *data,
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GLenum usage))
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COGL_FEATURE_FUNCTION (void, glBufferSubData,
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(GLenum target,
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GLintptr offset,
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GLsizeiptr size,
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const GLvoid *data))
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COGL_FEATURE_FUNCTION (void *, glMapBuffer,
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(GLenum target,
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GLenum access))
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COGL_FEATURE_FUNCTION (GLboolean, glUnmapBuffer,
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(GLenum target))
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COGL_FEATURE_FUNCTION (void, glDeleteBuffers,
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(GLsizei n,
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const GLuint *buffers))
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COGL_FEATURE_END ()
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/* Cogl requires OpenGL 1.2 so we assume these functions are always
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available and don't bother setting any feature flags. We still have
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to fetch the function pointers though because under Windows you can
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not call any function defined after GL 1.1 directly */
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COGL_FEATURE_BEGIN (in_1_2, 1, 2,
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"\0",
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"\0",
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0,
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0)
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COGL_FEATURE_FUNCTION (void, glDrawRangeElements,
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(GLenum mode,
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GLuint start,
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GLuint end,
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GLsizei count,
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GLenum type,
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const GLvoid *indices))
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COGL_FEATURE_FUNCTION (void, glBlendEquation,
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(GLenum mode))
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COGL_FEATURE_FUNCTION (void, glBlendColor,
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(GLclampf red,
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GLclampf green,
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GLclampf blue,
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GLclampf alpha))
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COGL_FEATURE_END ()
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/* Available in GL 1.3 or the multitexture extension. These are
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required */
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COGL_FEATURE_BEGIN (multitexture, 1, 3,
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"ARB\0",
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"multitexture\0",
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0,
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0)
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COGL_FEATURE_FUNCTION (void, glActiveTexture,
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(GLenum texture))
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COGL_FEATURE_FUNCTION (void, glClientActiveTexture,
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(GLenum texture))
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COGL_FEATURE_END ()
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/* Optional, declared in 1.4 */
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COGL_FEATURE_BEGIN (blend_func_separate, 1, 4,
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"EXT\0",
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"blend_func_separate\0",
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0,
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0)
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COGL_FEATURE_FUNCTION (void, glBlendFuncSeparate,
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(GLenum srcRGB,
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GLenum dstRGB,
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GLenum srcAlpha,
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GLenum dstAlpha))
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COGL_FEATURE_END ()
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/* Optional, declared in 2.0 */
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COGL_FEATURE_BEGIN (blend_equation_separate, 2, 0,
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"EXT\0",
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"blend_equation_separate\0",
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0,
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0)
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COGL_FEATURE_FUNCTION (void, glBlendEquationSeparate,
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(GLenum modeRGB,
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GLenum modeAlpha))
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COGL_FEATURE_END ()
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