| |
| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| |
| #include "gl/GrGLInterface.h" |
| |
| #define GL_GLEXT_PROTOTYPES |
| #include <GL/osmesa.h> |
| |
| #define GR_GL_GET_PROC(F) interface->f ## F = (GrGL ## F ## Proc) \ |
| OSMesaGetProcAddress("gl" #F); |
| #define GR_GL_GET_PROC_SUFFIX(F, S) interface->f ## F = (GrGL ## F ## Proc) \ |
| OSMesaGetProcAddress("gl" #F #S); |
| |
| // We use OSMesaGetProcAddress for every gl function to avoid accidentally using |
| // non-Mesa gl functions. |
| |
| const GrGLInterface* GrGLCreateMesaInterface() { |
| if (NULL != OSMesaGetCurrentContext()) { |
| GrGLGetStringProc getString = (GrGLGetStringProc) OSMesaGetProcAddress("glGetString"); |
| const char* versionString = (const char*) getString(GL_VERSION); |
| const char* extString = (const char*) getString(GL_EXTENSIONS); |
| GrGLVersion glVer = GrGLGetVersionFromString(versionString); |
| |
| if (glVer < GR_GL_VER(1,5)) { |
| // We must have array and element_array buffer objects. |
| return NULL; |
| } |
| GrGLInterface* interface = new GrGLInterface(); |
| |
| GR_GL_GET_PROC(ActiveTexture); |
| GR_GL_GET_PROC(BeginQuery); |
| GR_GL_GET_PROC(AttachShader); |
| GR_GL_GET_PROC(BindAttribLocation); |
| GR_GL_GET_PROC(BindBuffer); |
| GR_GL_GET_PROC(BindFragDataLocation); |
| GR_GL_GET_PROC(BindTexture); |
| GR_GL_GET_PROC(BlendColor); |
| GR_GL_GET_PROC(BlendFunc); |
| GR_GL_GET_PROC(BufferData); |
| GR_GL_GET_PROC(BufferSubData); |
| GR_GL_GET_PROC(Clear); |
| GR_GL_GET_PROC(ClearColor); |
| GR_GL_GET_PROC(ClearStencil); |
| GR_GL_GET_PROC(ColorMask); |
| GR_GL_GET_PROC(CompileShader); |
| GR_GL_GET_PROC(CompressedTexImage2D); |
| GR_GL_GET_PROC(CreateProgram); |
| GR_GL_GET_PROC(CreateShader); |
| GR_GL_GET_PROC(CullFace); |
| GR_GL_GET_PROC(DeleteBuffers); |
| GR_GL_GET_PROC(DeleteProgram); |
| GR_GL_GET_PROC(DeleteQueries); |
| GR_GL_GET_PROC(DeleteShader); |
| GR_GL_GET_PROC(DeleteTextures); |
| GR_GL_GET_PROC(DepthMask); |
| GR_GL_GET_PROC(Disable); |
| GR_GL_GET_PROC(DisableVertexAttribArray); |
| GR_GL_GET_PROC(DrawArrays); |
| GR_GL_GET_PROC(DrawBuffer); |
| GR_GL_GET_PROC(DrawBuffers); |
| GR_GL_GET_PROC(DrawElements); |
| GR_GL_GET_PROC(Enable); |
| GR_GL_GET_PROC(EnableVertexAttribArray); |
| GR_GL_GET_PROC(EndQuery); |
| GR_GL_GET_PROC(Finish); |
| GR_GL_GET_PROC(Flush); |
| GR_GL_GET_PROC(FrontFace); |
| GR_GL_GET_PROC(GenBuffers); |
| GR_GL_GET_PROC(GenQueries); |
| GR_GL_GET_PROC(GetBufferParameteriv); |
| GR_GL_GET_PROC(GetError); |
| GR_GL_GET_PROC(GetIntegerv); |
| GR_GL_GET_PROC(GetProgramInfoLog); |
| GR_GL_GET_PROC(GetProgramiv); |
| if (glVer >= GR_GL_VER(3,3) || |
| GrGLHasExtensionFromString("GL_ARB_timer_query", extString)) { |
| GR_GL_GET_PROC(GetQueryObjecti64v); |
| GR_GL_GET_PROC(GetQueryObjectui64v) |
| GR_GL_GET_PROC(QueryCounter); |
| } else if (GrGLHasExtensionFromString("GL_EXT_timer_query", extString)) { |
| GR_GL_GET_PROC_SUFFIX(GetQueryObjecti64v, EXT); |
| GR_GL_GET_PROC_SUFFIX(GetQueryObjectui64v, EXT); |
| } |
| GR_GL_GET_PROC(GetQueryObjectiv); |
| GR_GL_GET_PROC(GetQueryObjectuiv); |
| GR_GL_GET_PROC(GetQueryiv); |
| GR_GL_GET_PROC(GetShaderInfoLog); |
| GR_GL_GET_PROC(GetShaderiv); |
| GR_GL_GET_PROC(GetString); |
| GR_GL_GET_PROC(GetTexLevelParameteriv); |
| GR_GL_GET_PROC(GenTextures); |
| GR_GL_GET_PROC(GetUniformLocation); |
| GR_GL_GET_PROC(LineWidth); |
| GR_GL_GET_PROC(LinkProgram); |
| GR_GL_GET_PROC(MapBuffer); |
| GR_GL_GET_PROC(PixelStorei); |
| GR_GL_GET_PROC(ReadBuffer); |
| GR_GL_GET_PROC(ReadPixels); |
| GR_GL_GET_PROC(Scissor); |
| GR_GL_GET_PROC(ShaderSource); |
| GR_GL_GET_PROC(StencilFunc); |
| GR_GL_GET_PROC(StencilFuncSeparate); |
| GR_GL_GET_PROC(StencilMask); |
| GR_GL_GET_PROC(StencilMaskSeparate); |
| GR_GL_GET_PROC(StencilOp); |
| GR_GL_GET_PROC(StencilOpSeparate); |
| GR_GL_GET_PROC(TexImage2D) |
| GR_GL_GET_PROC(TexParameteri); |
| GR_GL_GET_PROC(TexStorage2D); |
| if (NULL == interface->fTexStorage2D) { |
| GR_GL_GET_PROC_SUFFIX(TexStorage2D, EXT); |
| } |
| GR_GL_GET_PROC(TexSubImage2D); |
| GR_GL_GET_PROC(Uniform1f); |
| GR_GL_GET_PROC(Uniform1i); |
| GR_GL_GET_PROC(Uniform1fv); |
| GR_GL_GET_PROC(Uniform1iv); |
| GR_GL_GET_PROC(Uniform2f); |
| GR_GL_GET_PROC(Uniform2i); |
| GR_GL_GET_PROC(Uniform2fv); |
| GR_GL_GET_PROC(Uniform2iv); |
| GR_GL_GET_PROC(Uniform3f); |
| GR_GL_GET_PROC(Uniform3i); |
| GR_GL_GET_PROC(Uniform3fv); |
| GR_GL_GET_PROC(Uniform3iv); |
| GR_GL_GET_PROC(Uniform4f); |
| GR_GL_GET_PROC(Uniform4i); |
| GR_GL_GET_PROC(Uniform4fv); |
| GR_GL_GET_PROC(Uniform4iv); |
| GR_GL_GET_PROC(UniformMatrix2fv); |
| GR_GL_GET_PROC(UniformMatrix3fv); |
| GR_GL_GET_PROC(UniformMatrix4fv); |
| GR_GL_GET_PROC(UnmapBuffer); |
| GR_GL_GET_PROC(UseProgram); |
| GR_GL_GET_PROC(VertexAttrib4fv); |
| GR_GL_GET_PROC(VertexAttribPointer); |
| GR_GL_GET_PROC(Viewport); |
| |
| // First look for GL3.0 FBO or GL_ARB_framebuffer_object (same since |
| // GL_ARB_framebuffer_object doesn't use ARB suffix.) |
| if (glVer >= GR_GL_VER(3,0) || |
| GrGLHasExtensionFromString("GL_ARB_framebuffer_object", |
| extString)) { |
| GR_GL_GET_PROC(GenFramebuffers); |
| GR_GL_GET_PROC(GetFramebufferAttachmentParameteriv); |
| GR_GL_GET_PROC(GetRenderbufferParameteriv); |
| GR_GL_GET_PROC(BindFramebuffer); |
| GR_GL_GET_PROC(FramebufferTexture2D); |
| GR_GL_GET_PROC(CheckFramebufferStatus); |
| GR_GL_GET_PROC(DeleteFramebuffers); |
| GR_GL_GET_PROC(RenderbufferStorage); |
| GR_GL_GET_PROC(GenRenderbuffers); |
| GR_GL_GET_PROC(DeleteRenderbuffers); |
| GR_GL_GET_PROC(FramebufferRenderbuffer); |
| GR_GL_GET_PROC(BindRenderbuffer); |
| GR_GL_GET_PROC(RenderbufferStorageMultisample); |
| GR_GL_GET_PROC(BlitFramebuffer); |
| } else if (GrGLHasExtensionFromString("GL_EXT_framebuffer_object", |
| extString)) { |
| GR_GL_GET_PROC_SUFFIX(GenFramebuffers, EXT); |
| GR_GL_GET_PROC_SUFFIX(GetFramebufferAttachmentParameteriv, EXT); |
| GR_GL_GET_PROC_SUFFIX(GetRenderbufferParameteriv, EXT); |
| GR_GL_GET_PROC_SUFFIX(BindFramebuffer, EXT); |
| GR_GL_GET_PROC_SUFFIX(FramebufferTexture2D, EXT); |
| GR_GL_GET_PROC_SUFFIX(CheckFramebufferStatus, EXT); |
| GR_GL_GET_PROC_SUFFIX(DeleteFramebuffers, EXT); |
| GR_GL_GET_PROC_SUFFIX(RenderbufferStorage, EXT); |
| GR_GL_GET_PROC_SUFFIX(GenRenderbuffers, EXT); |
| GR_GL_GET_PROC_SUFFIX(DeleteRenderbuffers, EXT); |
| GR_GL_GET_PROC_SUFFIX(FramebufferRenderbuffer, EXT); |
| GR_GL_GET_PROC_SUFFIX(BindRenderbuffer, EXT); |
| if (GrGLHasExtensionFromString("GL_EXT_framebuffer_multisample", |
| extString)) { |
| GR_GL_GET_PROC_SUFFIX(RenderbufferStorageMultisample, EXT); |
| } |
| if (GrGLHasExtensionFromString("GL_EXT_framebuffer_blit", |
| extString)) { |
| GR_GL_GET_PROC_SUFFIX(BlitFramebuffer, EXT); |
| } |
| } else { |
| // we must have FBOs |
| delete interface; |
| return NULL; |
| } |
| GR_GL_GET_PROC(BindFragDataLocationIndexed); |
| interface->fBindingsExported = kDesktop_GrGLBinding; |
| return interface; |
| } else { |
| return NULL; |
| } |
| } |
