| |
| /* |
| * 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 "gl/GrGLUtil.h" |
| #define WIN32_LEAN_AND_MEAN |
| #include <Windows.h> |
| |
| /* |
| * Windows makes the GL funcs all be __stdcall instead of __cdecl :( |
| * This implementation will only work if GR_GL_FUNCTION_TYPE is __stdcall. |
| * Otherwise, a springboard would be needed that hides the calling convention. |
| */ |
| |
| #define SET_PROC(F) interface->f ## F = (GrGL ## F ## Proc) GetProcAddress(alu.get(), "gl" #F); |
| #define WGL_SET_PROC(F) interface->f ## F = (GrGL ## F ## Proc) wglGetProcAddress("gl" #F); |
| #define WGL_SET_PROC_SUFFIX(F, S) interface->f ## F = \ |
| (GrGL ## F ## Proc) wglGetProcAddress("gl" #F #S); |
| |
| class AutoLibraryUnload { |
| public: |
| AutoLibraryUnload(const char* moduleName) { |
| fModule = LoadLibrary(moduleName); |
| } |
| ~AutoLibraryUnload() { |
| if (NULL != fModule) { |
| FreeLibrary(fModule); |
| } |
| } |
| HMODULE get() const { return fModule; } |
| |
| private: |
| HMODULE fModule; |
| }; |
| |
| const GrGLInterface* GrGLCreateNativeInterface() { |
| // wglGetProcAddress requires a context. |
| // GL Function pointers retrieved in one context may not be valid in another |
| // context. For that reason we create a new GrGLInterface each time we're |
| // called. |
| AutoLibraryUnload alu("opengl32.dll"); |
| if (NULL == alu.get()) { |
| return NULL; |
| } |
| |
| if (NULL != wglGetCurrentContext()) { |
| |
| // These should always be present and don't require wglGetProcAddress |
| GrGLGetStringProc glGetString = |
| (GrGLGetStringProc) GetProcAddress(alu.get(), "glGetString"); |
| GrGLGetIntegervProc glGetIntegerv = |
| (GrGLGetIntegervProc) GetProcAddress(alu.get(), "glGetIntegerv"); |
| if (NULL == glGetString || NULL == glGetIntegerv) { |
| return NULL; |
| } |
| |
| // This may or may not succeed depending on the gl version. |
| GrGLGetStringiProc glGetStringi = (GrGLGetStringiProc) wglGetProcAddress("glGetStringi"); |
| |
| GrGLExtensions extensions; |
| if (!extensions.init(kDesktop_GrGLBinding, glGetString, glGetStringi, glGetIntegerv)) { |
| return NULL; |
| } |
| const char* versionString = (const char*) glGetString(GR_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(); |
| |
| // Functions that are part of GL 1.1 will return NULL in |
| // wglGetProcAddress |
| SET_PROC(BindTexture) |
| SET_PROC(BlendFunc) |
| |
| if (glVer >= GR_GL_VER(1,4) || |
| extensions.has("GL_ARB_imaging") || |
| extensions.has("GL_EXT_blend_color")) { |
| WGL_SET_PROC(BlendColor); |
| } |
| |
| SET_PROC(Clear) |
| SET_PROC(ClearColor) |
| SET_PROC(ClearStencil) |
| SET_PROC(ColorMask) |
| SET_PROC(CopyTexSubImage2D) |
| SET_PROC(CullFace) |
| SET_PROC(DeleteTextures) |
| SET_PROC(DepthMask) |
| SET_PROC(Disable) |
| SET_PROC(DisableClientState) |
| SET_PROC(DrawArrays) |
| SET_PROC(DrawElements) |
| SET_PROC(DrawBuffer) |
| SET_PROC(Enable) |
| SET_PROC(EnableClientState) |
| SET_PROC(FrontFace) |
| SET_PROC(Finish) |
| SET_PROC(Flush) |
| SET_PROC(GenTextures) |
| SET_PROC(GetError) |
| SET_PROC(GetIntegerv) |
| SET_PROC(GetString) |
| SET_PROC(GetTexLevelParameteriv) |
| SET_PROC(LineWidth) |
| SET_PROC(LoadIdentity) |
| SET_PROC(LoadMatrixf) |
| SET_PROC(MatrixMode) |
| SET_PROC(PixelStorei) |
| SET_PROC(ReadBuffer) |
| SET_PROC(ReadPixels) |
| SET_PROC(Scissor) |
| SET_PROC(StencilFunc) |
| SET_PROC(StencilMask) |
| SET_PROC(StencilOp) |
| SET_PROC(TexGenf) |
| SET_PROC(TexGenfv) |
| SET_PROC(TexGeni) |
| SET_PROC(TexImage2D) |
| SET_PROC(TexParameteri) |
| SET_PROC(TexParameteriv) |
| if (glVer >= GR_GL_VER(4,2) || extensions.has("GL_ARB_texture_storage")) { |
| WGL_SET_PROC(TexStorage2D); |
| } else if (extensions.has("GL_EXT_texture_storage")) { |
| WGL_SET_PROC_SUFFIX(TexStorage2D, EXT); |
| } |
| SET_PROC(TexSubImage2D) |
| SET_PROC(Viewport) |
| SET_PROC(VertexPointer) |
| |
| WGL_SET_PROC(ActiveTexture); |
| WGL_SET_PROC(AttachShader); |
| WGL_SET_PROC(BeginQuery); |
| WGL_SET_PROC(BindAttribLocation); |
| WGL_SET_PROC(BindBuffer); |
| WGL_SET_PROC(BindFragDataLocation); |
| WGL_SET_PROC(BufferData); |
| WGL_SET_PROC(BufferSubData); |
| WGL_SET_PROC(ClientActiveTexture); |
| WGL_SET_PROC(CompileShader); |
| WGL_SET_PROC(CompressedTexImage2D); |
| WGL_SET_PROC(CreateProgram); |
| WGL_SET_PROC(CreateShader); |
| WGL_SET_PROC(DeleteBuffers); |
| WGL_SET_PROC(DeleteQueries); |
| WGL_SET_PROC(DeleteProgram); |
| WGL_SET_PROC(DeleteShader); |
| WGL_SET_PROC(DisableVertexAttribArray); |
| WGL_SET_PROC(DrawBuffers); |
| WGL_SET_PROC(EnableVertexAttribArray); |
| WGL_SET_PROC(EndQuery); |
| WGL_SET_PROC(GenBuffers); |
| WGL_SET_PROC(GenerateMipmap); |
| WGL_SET_PROC(GenQueries); |
| WGL_SET_PROC(GetBufferParameteriv); |
| WGL_SET_PROC(GetQueryiv); |
| WGL_SET_PROC(GetQueryObjectiv); |
| WGL_SET_PROC(GetQueryObjectuiv); |
| if (glVer > GR_GL_VER(3,3) || extensions.has("GL_ARB_timer_query")) { |
| WGL_SET_PROC(GetQueryObjecti64v); |
| WGL_SET_PROC(GetQueryObjectui64v); |
| WGL_SET_PROC(QueryCounter); |
| } else if (extensions.has("GL_EXT_timer_query")) { |
| WGL_SET_PROC_SUFFIX(GetQueryObjecti64v, EXT); |
| WGL_SET_PROC_SUFFIX(GetQueryObjectui64v, EXT); |
| } |
| WGL_SET_PROC(GetProgramInfoLog); |
| WGL_SET_PROC(GetProgramiv); |
| WGL_SET_PROC(GetShaderInfoLog); |
| WGL_SET_PROC(GetShaderiv); |
| WGL_SET_PROC(GetStringi) |
| WGL_SET_PROC(GetUniformLocation); |
| WGL_SET_PROC(LinkProgram); |
| if (extensions.has("GL_NV_framebuffer_multisample_coverage")) { |
| WGL_SET_PROC_SUFFIX(RenderbufferStorageMultisampleCoverage, NV); |
| } |
| WGL_SET_PROC(ShaderSource); |
| WGL_SET_PROC(StencilFuncSeparate); |
| WGL_SET_PROC(StencilMaskSeparate); |
| WGL_SET_PROC(StencilOpSeparate); |
| WGL_SET_PROC(Uniform1f); |
| WGL_SET_PROC(Uniform1i); |
| WGL_SET_PROC(Uniform1fv); |
| WGL_SET_PROC(Uniform1iv); |
| WGL_SET_PROC(Uniform2f); |
| WGL_SET_PROC(Uniform2i); |
| WGL_SET_PROC(Uniform2fv); |
| WGL_SET_PROC(Uniform2iv); |
| WGL_SET_PROC(Uniform3f); |
| WGL_SET_PROC(Uniform3i); |
| WGL_SET_PROC(Uniform3fv); |
| WGL_SET_PROC(Uniform3iv); |
| WGL_SET_PROC(Uniform4f); |
| WGL_SET_PROC(Uniform4i); |
| WGL_SET_PROC(Uniform4fv); |
| WGL_SET_PROC(Uniform4iv); |
| WGL_SET_PROC(UniformMatrix2fv); |
| WGL_SET_PROC(UniformMatrix3fv); |
| WGL_SET_PROC(UniformMatrix4fv); |
| WGL_SET_PROC(UseProgram); |
| WGL_SET_PROC(VertexAttrib4fv); |
| WGL_SET_PROC(VertexAttribPointer); |
| WGL_SET_PROC(BindFragDataLocationIndexed); |
| |
| if (glVer >= GR_GL_VER(3,0) || extensions.has("GL_ARB_vertex_array_object")) { |
| // no ARB suffix for GL_ARB_vertex_array_object |
| WGL_SET_PROC(BindVertexArray); |
| WGL_SET_PROC(DeleteVertexArrays); |
| WGL_SET_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")) { |
| WGL_SET_PROC(GenFramebuffers); |
| WGL_SET_PROC(GetFramebufferAttachmentParameteriv); |
| WGL_SET_PROC(GetRenderbufferParameteriv); |
| WGL_SET_PROC(BindFramebuffer); |
| WGL_SET_PROC(FramebufferTexture2D); |
| WGL_SET_PROC(CheckFramebufferStatus); |
| WGL_SET_PROC(DeleteFramebuffers); |
| WGL_SET_PROC(RenderbufferStorage); |
| WGL_SET_PROC(GenRenderbuffers); |
| WGL_SET_PROC(DeleteRenderbuffers); |
| WGL_SET_PROC(FramebufferRenderbuffer); |
| WGL_SET_PROC(BindRenderbuffer); |
| WGL_SET_PROC(RenderbufferStorageMultisample); |
| WGL_SET_PROC(BlitFramebuffer); |
| } else if (extensions.has("GL_EXT_framebuffer_object")) { |
| WGL_SET_PROC_SUFFIX(GenFramebuffers, EXT); |
| WGL_SET_PROC_SUFFIX(GetFramebufferAttachmentParameteriv, EXT); |
| WGL_SET_PROC_SUFFIX(GetRenderbufferParameteriv, EXT); |
| WGL_SET_PROC_SUFFIX(BindFramebuffer, EXT); |
| WGL_SET_PROC_SUFFIX(FramebufferTexture2D, EXT); |
| WGL_SET_PROC_SUFFIX(CheckFramebufferStatus, EXT); |
| WGL_SET_PROC_SUFFIX(DeleteFramebuffers, EXT); |
| WGL_SET_PROC_SUFFIX(RenderbufferStorage, EXT); |
| WGL_SET_PROC_SUFFIX(GenRenderbuffers, EXT); |
| WGL_SET_PROC_SUFFIX(DeleteRenderbuffers, EXT); |
| WGL_SET_PROC_SUFFIX(FramebufferRenderbuffer, EXT); |
| WGL_SET_PROC_SUFFIX(BindRenderbuffer, EXT); |
| if (extensions.has("GL_EXT_framebuffer_multisample")) { |
| WGL_SET_PROC_SUFFIX(RenderbufferStorageMultisample, EXT); |
| } |
| if (extensions.has("GL_EXT_framebuffer_blit")) { |
| WGL_SET_PROC_SUFFIX(BlitFramebuffer, EXT); |
| } |
| } else { |
| // we must have FBOs |
| delete interface; |
| return NULL; |
| } |
| WGL_SET_PROC(MapBuffer); |
| WGL_SET_PROC(UnmapBuffer); |
| |
| if (extensions.has("GL_NV_path_rendering")) { |
| WGL_SET_PROC_SUFFIX(PathCommands, NV); |
| WGL_SET_PROC_SUFFIX(PathCoords, NV); |
| WGL_SET_PROC_SUFFIX(PathSubCommands, NV); |
| WGL_SET_PROC_SUFFIX(PathSubCoords, NV); |
| WGL_SET_PROC_SUFFIX(PathString, NV); |
| WGL_SET_PROC_SUFFIX(PathGlyphs, NV); |
| WGL_SET_PROC_SUFFIX(PathGlyphRange, NV); |
| WGL_SET_PROC_SUFFIX(WeightPaths, NV); |
| WGL_SET_PROC_SUFFIX(CopyPath, NV); |
| WGL_SET_PROC_SUFFIX(InterpolatePaths, NV); |
| WGL_SET_PROC_SUFFIX(TransformPath, NV); |
| WGL_SET_PROC_SUFFIX(PathParameteriv, NV); |
| WGL_SET_PROC_SUFFIX(PathParameteri, NV); |
| WGL_SET_PROC_SUFFIX(PathParameterfv, NV); |
| WGL_SET_PROC_SUFFIX(PathParameterf, NV); |
| WGL_SET_PROC_SUFFIX(PathDashArray, NV); |
| WGL_SET_PROC_SUFFIX(GenPaths, NV); |
| WGL_SET_PROC_SUFFIX(DeletePaths, NV); |
| WGL_SET_PROC_SUFFIX(IsPath, NV); |
| WGL_SET_PROC_SUFFIX(PathStencilFunc, NV); |
| WGL_SET_PROC_SUFFIX(PathStencilDepthOffset, NV); |
| WGL_SET_PROC_SUFFIX(StencilFillPath, NV); |
| WGL_SET_PROC_SUFFIX(StencilStrokePath, NV); |
| WGL_SET_PROC_SUFFIX(StencilFillPathInstanced, NV); |
| WGL_SET_PROC_SUFFIX(StencilStrokePathInstanced, NV); |
| WGL_SET_PROC_SUFFIX(PathCoverDepthFunc, NV); |
| WGL_SET_PROC_SUFFIX(PathColorGen, NV); |
| WGL_SET_PROC_SUFFIX(PathTexGen, NV); |
| WGL_SET_PROC_SUFFIX(PathFogGen, NV); |
| WGL_SET_PROC_SUFFIX(CoverFillPath, NV); |
| WGL_SET_PROC_SUFFIX(CoverStrokePath, NV); |
| WGL_SET_PROC_SUFFIX(CoverFillPathInstanced, NV); |
| WGL_SET_PROC_SUFFIX(CoverStrokePathInstanced, NV); |
| WGL_SET_PROC_SUFFIX(GetPathParameteriv, NV); |
| WGL_SET_PROC_SUFFIX(GetPathParameterfv, NV); |
| WGL_SET_PROC_SUFFIX(GetPathCommands, NV); |
| WGL_SET_PROC_SUFFIX(GetPathCoords, NV); |
| WGL_SET_PROC_SUFFIX(GetPathDashArray, NV); |
| WGL_SET_PROC_SUFFIX(GetPathMetrics, NV); |
| WGL_SET_PROC_SUFFIX(GetPathMetricRange, NV); |
| WGL_SET_PROC_SUFFIX(GetPathSpacing, NV); |
| WGL_SET_PROC_SUFFIX(GetPathColorGeniv, NV); |
| WGL_SET_PROC_SUFFIX(GetPathColorGenfv, NV); |
| WGL_SET_PROC_SUFFIX(GetPathTexGeniv, NV); |
| WGL_SET_PROC_SUFFIX(GetPathTexGenfv, NV); |
| WGL_SET_PROC_SUFFIX(IsPointInFillPath, NV); |
| WGL_SET_PROC_SUFFIX(IsPointInStrokePath, NV); |
| WGL_SET_PROC_SUFFIX(GetPathLength, NV); |
| WGL_SET_PROC_SUFFIX(PointAlongPath, NV); |
| } |
| |
| interface->fBindingsExported = kDesktop_GrGLBinding; |
| |
| return interface; |
| } else { |
| return NULL; |
| } |
| } |
