/* * 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/GrGLExtensions.h" #include "gl/GrGLInterface.h" #include "../GrGLUtil.h" #define GL_GLEXT_PROTOTYPES #include "osmesa_wrapper.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"); GrGLGetStringiProc getStringi = (GrGLGetStringiProc) OSMesaGetProcAddress("glGetStringi"); GrGLGetIntegervProc getIntegerv = (GrGLGetIntegervProc) OSMesaGetProcAddress("glGetIntegerv"); GrGLExtensions extensions; if (!extensions.init(kDesktop_GrGLBinding, getString, getStringi, getIntegerv)) { return NULL; } const char* versionString = (const char*) getString(GL_VERSION); 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(BlendFunc); if (glVer >= GR_GL_VER(1,4) || extensions.has("GL_ARB_imaging") || extensions.has("GL_EXT_blend_color")) { GR_GL_GET_PROC(BlendColor); } 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(CopyTexSubImage2D); 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) || extensions.has("GL_ARB_timer_query")) { GR_GL_GET_PROC(GetQueryObjecti64v); GR_GL_GET_PROC(GetQueryObjectui64v) GR_GL_GET_PROC(QueryCounter); } else if (extensions.has("GL_EXT_timer_query")) { 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(GetStringi); 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(TexParameteriv); 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); if (glVer >= GR_GL_VER(3,0) || extensions.has("GL_ARB_vertex_array_object")) { // no ARB suffix for GL_ARB_vertex_array_object GR_GL_GET_PROC(BindVertexArray); GR_GL_GET_PROC(DeleteVertexArrays); GR_GL_GET_PROC(GenVertexArrays); } // 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) || extensions.has("GL_ARB_framebuffer_object")) { 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 (extensions.has("GL_EXT_framebuffer_object")) { 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 (extensions.has("GL_EXT_framebuffer_multisample")) { GR_GL_GET_PROC_SUFFIX(RenderbufferStorageMultisample, EXT); } if (extensions.has("GL_EXT_framebuffer_blit")) { 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; } }