| |
| /* |
| * 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" |
| #include "gl/GrGLExtensions.h" |
| #include "../GrGLUtil.h" |
| |
| #include <dlfcn.h> |
| |
| // We get the proc addresss of all GL functions dynamically because we sometimes link against |
| // alternative GL implementations (e.g. MESA) in addition to the native GL implementation. |
| class GLLoader { |
| public: |
| GLLoader() { |
| fLibrary = dlopen( |
| "/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib", |
| RTLD_LAZY); |
| } |
| ~GLLoader() { |
| if (NULL != fLibrary) { |
| dlclose(fLibrary); |
| } |
| } |
| void* handle() { |
| return NULL == fLibrary ? RTLD_DEFAULT : fLibrary; |
| } |
| private: |
| void* fLibrary; |
| }; |
| |
| static void* GetProcAddress(const char* name) { |
| static GLLoader gLoader; |
| return dlsym(gLoader.handle(), name); |
| } |
| |
| #define GET_PROC(name) (interface->f ## name = ((GrGL ## name ## Proc) GetProcAddress("gl" #name))) |
| #define GET_PROC_SUFFIX(name, suffix) (interface->f ## name = ((GrGL ## name ## Proc) GetProcAddress("gl" #name #suffix))) |
| |
| const GrGLInterface* GrGLCreateNativeInterface() { |
| |
| GrGLGetStringProc glGetString = (GrGLGetStringProc) GetProcAddress("glGetString"); |
| GrGLGetStringiProc glGetStringi = (GrGLGetStringiProc) GetProcAddress("glGetStringi"); |
| GrGLGetIntegervProc glGetIntegerv = (GrGLGetIntegervProc) GetProcAddress("glGetIntegerv"); |
| |
| const char* verStr = (const char*) glGetString(GR_GL_VERSION); |
| GrGLVersion ver = GrGLGetVersionFromString(verStr); |
| GrGLExtensions extensions; |
| if (!extensions.init(kDesktop_GrGLBinding, glGetString, glGetStringi, glGetIntegerv)) { |
| return NULL; |
| } |
| |
| GrGLInterface* interface = SkNEW(GrGLInterface); |
| interface->fBindingsExported = kDesktop_GrGLBinding; |
| |
| GET_PROC(ActiveTexture); |
| GET_PROC(AttachShader); |
| GET_PROC(BeginQuery); |
| GET_PROC(BindAttribLocation); |
| GET_PROC(BindBuffer); |
| if (ver >= GR_GL_VER(3,0)) { |
| GET_PROC(BindFragDataLocation); |
| } |
| GET_PROC(BindTexture); |
| GET_PROC(BlendFunc); |
| |
| if (ver >= GR_GL_VER(1,4) || |
| extensions.has("GL_ARB_imaging") || |
| extensions.has("GL_EXT_blend_color")) { |
| GET_PROC(BlendColor); |
| } |
| |
| GET_PROC(BufferData); |
| GET_PROC(BufferSubData); |
| GET_PROC(Clear); |
| GET_PROC(ClearColor); |
| GET_PROC(ClearStencil); |
| GET_PROC(ClientActiveTexture); |
| GET_PROC(ColorMask); |
| GET_PROC(CompileShader); |
| GET_PROC(CompressedTexImage2D); |
| GET_PROC(CopyTexSubImage2D); |
| GET_PROC(CreateProgram); |
| GET_PROC(CreateShader); |
| GET_PROC(CullFace); |
| GET_PROC(DeleteBuffers); |
| GET_PROC(DeleteProgram); |
| GET_PROC(DeleteQueries); |
| GET_PROC(DeleteShader); |
| GET_PROC(DeleteTextures); |
| GET_PROC(DepthMask); |
| GET_PROC(Disable); |
| GET_PROC(DisableClientState); |
| GET_PROC(DisableVertexAttribArray); |
| GET_PROC(DrawArrays); |
| GET_PROC(DrawBuffer); |
| GET_PROC(DrawBuffers); |
| GET_PROC(DrawElements); |
| GET_PROC(Enable); |
| GET_PROC(EnableClientState); |
| GET_PROC(EnableVertexAttribArray); |
| GET_PROC(EndQuery); |
| GET_PROC(Finish); |
| GET_PROC(Flush); |
| GET_PROC(FrontFace); |
| GET_PROC(GenBuffers); |
| GET_PROC(GenerateMipmap); |
| GET_PROC(GenQueries); |
| GET_PROC(GetBufferParameteriv); |
| GET_PROC(GetError); |
| GET_PROC(GetIntegerv); |
| GET_PROC(GetProgramInfoLog); |
| GET_PROC(GetProgramiv); |
| GET_PROC(GetQueryiv); |
| GET_PROC(GetQueryObjectiv); |
| GET_PROC(GetQueryObjectuiv); |
| GET_PROC(GetShaderInfoLog); |
| GET_PROC(GetShaderiv); |
| GET_PROC(GetString); |
| GET_PROC(GetStringi); |
| GET_PROC(GetTexLevelParameteriv); |
| GET_PROC(GenTextures); |
| GET_PROC(GetUniformLocation); |
| GET_PROC(LineWidth); |
| GET_PROC(LinkProgram); |
| GET_PROC(LoadIdentity); |
| GET_PROC(LoadMatrixf); |
| GET_PROC(MapBuffer); |
| GET_PROC(MatrixMode); |
| GET_PROC(PixelStorei); |
| GET_PROC(ReadBuffer); |
| GET_PROC(ReadPixels); |
| GET_PROC(Scissor); |
| GET_PROC(ShaderSource); |
| GET_PROC(StencilFunc); |
| GET_PROC(StencilFuncSeparate); |
| GET_PROC(StencilMask); |
| GET_PROC(StencilMaskSeparate); |
| GET_PROC(StencilOp); |
| GET_PROC(StencilOpSeparate); |
| GET_PROC(TexGenf); |
| GET_PROC(TexGenfv); |
| GET_PROC(TexGeni); |
| GET_PROC(TexImage2D); |
| GET_PROC(TexParameteri); |
| GET_PROC(TexParameteriv); |
| if (ver >= GR_GL_VER(4,2) || extensions.has("GL_ARB_texture_storage")) { |
| GET_PROC(TexStorage2D); |
| } else if (extensions.has("GL_EXT_texture_storage")) { |
| GET_PROC_SUFFIX(TexStorage2D, EXT); |
| } |
| GET_PROC(TexSubImage2D); |
| GET_PROC(Uniform1f); |
| GET_PROC(Uniform1i); |
| GET_PROC(Uniform1fv); |
| GET_PROC(Uniform1iv); |
| GET_PROC(Uniform2f); |
| GET_PROC(Uniform2i); |
| GET_PROC(Uniform2fv); |
| GET_PROC(Uniform2iv); |
| GET_PROC(Uniform3f); |
| GET_PROC(Uniform3i); |
| GET_PROC(Uniform3fv); |
| GET_PROC(Uniform3iv); |
| GET_PROC(Uniform4f); |
| GET_PROC(Uniform4i); |
| GET_PROC(Uniform4fv); |
| GET_PROC(Uniform4iv); |
| GET_PROC(Uniform4fv); |
| GET_PROC(UniformMatrix2fv); |
| GET_PROC(UniformMatrix3fv); |
| GET_PROC(UniformMatrix4fv); |
| GET_PROC(UnmapBuffer); |
| GET_PROC(UseProgram); |
| GET_PROC(VertexAttrib4fv); |
| GET_PROC(VertexAttribPointer); |
| GET_PROC(VertexPointer); |
| GET_PROC(Viewport); |
| |
| if (ver >= GR_GL_VER(3,0) || extensions.has("GL_ARB_vertex_array_object")) { |
| // no ARB suffix for GL_ARB_vertex_array_object |
| GET_PROC(BindVertexArray); |
| GET_PROC(DeleteVertexArrays); |
| GET_PROC(GenVertexArrays); |
| } |
| |
| if (ver >= GR_GL_VER(3,3) || extensions.has("GL_ARB_timer_query")) { |
| // ARB extension doesn't use the ARB suffix on the function name |
| GET_PROC(QueryCounter); |
| GET_PROC(GetQueryObjecti64v); |
| GET_PROC(GetQueryObjectui64v); |
| } else if (extensions.has("GL_EXT_timer_query")) { |
| GET_PROC_SUFFIX(GetQueryObjecti64v, EXT); |
| GET_PROC_SUFFIX(GetQueryObjectui64v, EXT); |
| } |
| |
| if (ver >= GR_GL_VER(3,0) || extensions.has("GL_ARB_framebuffer_object")) { |
| // ARB extension doesn't use the ARB suffix on the function names |
| GET_PROC(GenFramebuffers); |
| GET_PROC(GetFramebufferAttachmentParameteriv); |
| GET_PROC(GetRenderbufferParameteriv); |
| GET_PROC(BindFramebuffer); |
| GET_PROC(FramebufferTexture2D); |
| GET_PROC(CheckFramebufferStatus); |
| GET_PROC(DeleteFramebuffers); |
| GET_PROC(RenderbufferStorage); |
| GET_PROC(GenRenderbuffers); |
| GET_PROC(DeleteRenderbuffers); |
| GET_PROC(FramebufferRenderbuffer); |
| GET_PROC(BindRenderbuffer); |
| GET_PROC(RenderbufferStorageMultisample); |
| GET_PROC(BlitFramebuffer); |
| } else { |
| if (extensions.has("GL_EXT_framebuffer_object")) { |
| GET_PROC_SUFFIX(GenFramebuffers, EXT); |
| GET_PROC_SUFFIX(GetFramebufferAttachmentParameteriv, EXT); |
| GET_PROC_SUFFIX(GetRenderbufferParameteriv, EXT); |
| GET_PROC_SUFFIX(BindFramebuffer, EXT); |
| GET_PROC_SUFFIX(FramebufferTexture2D, EXT); |
| GET_PROC_SUFFIX(CheckFramebufferStatus, EXT); |
| GET_PROC_SUFFIX(DeleteFramebuffers, EXT); |
| GET_PROC_SUFFIX(RenderbufferStorage, EXT); |
| GET_PROC_SUFFIX(GenRenderbuffers, EXT); |
| GET_PROC_SUFFIX(DeleteRenderbuffers, EXT); |
| GET_PROC_SUFFIX(FramebufferRenderbuffer, EXT); |
| GET_PROC_SUFFIX(BindRenderbuffer, EXT); |
| } |
| if (extensions.has("GL_EXT_framebuffer_multisample")) { |
| GET_PROC_SUFFIX(RenderbufferStorageMultisample, EXT); |
| } |
| if (extensions.has("GL_EXT_framebuffer_blit")) { |
| GET_PROC_SUFFIX(BlitFramebuffer, EXT); |
| } |
| } |
| if (ver >= GR_GL_VER(3,3) || extensions.has("GL_ARB_blend_func_extended")) { |
| // ARB extension doesn't use the ARB suffix on the function name |
| GET_PROC(BindFragDataLocationIndexed); |
| } |
| return interface; |
| } |