| |
| /* |
| * 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 "../GrGLUtil.h" |
| #define WIN32_LEAN_AND_MEAN |
| #include <Windows.h> |
| #include <GL/GL.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 GR_GL_GET_PROC(F) interface->f ## F = (GrGL ## F ## Proc) wglGetProcAddress("gl" #F); |
| #define GR_GL_GET_PROC_SUFFIX(F, S) interface->f ## F = (GrGL ## F ## Proc) wglGetProcAddress("gl" #F #S); |
| |
| 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. |
| if (NULL != wglGetCurrentContext()) { |
| const char* versionString = (const char*) glGetString(GL_VERSION); |
| const char* extString = (const char*) glGetString(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(); |
| |
| // Functions that are part of GL 1.1 will return NULL in |
| // wglGetProcAddress |
| interface->fBindTexture = glBindTexture; |
| interface->fBlendFunc = glBlendFunc; |
| |
| if (glVer >= GR_GL_VER(1,4) || |
| GrGLHasExtensionFromString("GL_ARB_imaging", extString) || |
| GrGLHasExtensionFromString("GL_EXT_blend_color", extString)) { |
| GR_GL_GET_PROC(BlendColor); |
| } |
| |
| interface->fClear = glClear; |
| interface->fClearColor = glClearColor; |
| interface->fClearStencil = glClearStencil; |
| interface->fColorMask = glColorMask; |
| interface->fCullFace = glCullFace; |
| interface->fDeleteTextures = glDeleteTextures; |
| interface->fDepthMask = glDepthMask; |
| interface->fDisable = glDisable; |
| interface->fDrawArrays = glDrawArrays; |
| interface->fDrawElements = glDrawElements; |
| interface->fDrawBuffer = glDrawBuffer; |
| interface->fEnable = glEnable; |
| interface->fFrontFace = glFrontFace; |
| interface->fFinish = glFinish; |
| interface->fFlush = glFlush; |
| interface->fGenTextures = glGenTextures; |
| interface->fGetError = glGetError; |
| interface->fGetIntegerv = glGetIntegerv; |
| interface->fGetString = glGetString; |
| interface->fGetTexLevelParameteriv = glGetTexLevelParameteriv; |
| interface->fLineWidth = glLineWidth; |
| interface->fLoadIdentity = glLoadIdentity; |
| interface->fLoadMatrixf = glLoadMatrixf; |
| interface->fMatrixMode = glMatrixMode; |
| interface->fPixelStorei = glPixelStorei; |
| interface->fReadBuffer = glReadBuffer; |
| interface->fReadPixels = glReadPixels; |
| interface->fScissor = glScissor; |
| interface->fStencilFunc = glStencilFunc; |
| interface->fStencilMask = glStencilMask; |
| interface->fStencilOp = glStencilOp; |
| interface->fTexImage2D = glTexImage2D; |
| interface->fTexParameteri = glTexParameteri; |
| interface->fTexParameteriv = glTexParameteriv; |
| if (glVer >= GR_GL_VER(4,2) || |
| GrGLHasExtensionFromString("GL_ARB_texture_storage", extString)) { |
| GR_GL_GET_PROC(TexStorage2D); |
| } else if (GrGLHasExtensionFromString("GL_EXT_texture_storage", extString)) { |
| GR_GL_GET_PROC_SUFFIX(TexStorage2D, EXT); |
| } |
| interface->fTexSubImage2D = glTexSubImage2D; |
| interface->fViewport = glViewport; |
| |
| GR_GL_GET_PROC(ActiveTexture); |
| GR_GL_GET_PROC(AttachShader); |
| GR_GL_GET_PROC(BeginQuery); |
| GR_GL_GET_PROC(BindAttribLocation); |
| GR_GL_GET_PROC(BindBuffer); |
| GR_GL_GET_PROC(BindFragDataLocation); |
| GR_GL_GET_PROC(BufferData); |
| GR_GL_GET_PROC(BufferSubData); |
| GR_GL_GET_PROC(CompileShader); |
| GR_GL_GET_PROC(CompressedTexImage2D); |
| GR_GL_GET_PROC(CreateProgram); |
| GR_GL_GET_PROC(CreateShader); |
| GR_GL_GET_PROC(DeleteBuffers); |
| GR_GL_GET_PROC(DeleteQueries); |
| GR_GL_GET_PROC(DeleteProgram); |
| GR_GL_GET_PROC(DeleteShader); |
| GR_GL_GET_PROC(DisableVertexAttribArray); |
| GR_GL_GET_PROC(DrawBuffers); |
| GR_GL_GET_PROC(EnableVertexAttribArray); |
| GR_GL_GET_PROC(EndQuery); |
| GR_GL_GET_PROC(GenBuffers); |
| GR_GL_GET_PROC(GenQueries); |
| GR_GL_GET_PROC(GetBufferParameteriv); |
| GR_GL_GET_PROC(GetQueryiv); |
| GR_GL_GET_PROC(GetQueryObjectiv); |
| GR_GL_GET_PROC(GetQueryObjectuiv); |
| 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(GetProgramInfoLog); |
| GR_GL_GET_PROC(GetProgramiv); |
| GR_GL_GET_PROC(GetShaderInfoLog); |
| GR_GL_GET_PROC(GetShaderiv); |
| GR_GL_GET_PROC(GetUniformLocation); |
| GR_GL_GET_PROC(LinkProgram); |
| if (GrGLHasExtensionFromString("GL_NV_framebuffer_multisample_coverage", extString)) { |
| GR_GL_GET_PROC_SUFFIX(RenderbufferStorageMultisampleCoverage, NV); |
| } |
| GR_GL_GET_PROC(ShaderSource); |
| GR_GL_GET_PROC(StencilFuncSeparate); |
| GR_GL_GET_PROC(StencilMaskSeparate); |
| GR_GL_GET_PROC(StencilOpSeparate); |
| 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(UseProgram); |
| GR_GL_GET_PROC(VertexAttrib4fv); |
| GR_GL_GET_PROC(VertexAttribPointer); |
| GR_GL_GET_PROC(BindFragDataLocationIndexed); |
| |
| // 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(MapBuffer); |
| GR_GL_GET_PROC(UnmapBuffer); |
| |
| if (GrGLHasExtensionFromString("GL_NV_path_rendering", extString)) { |
| GR_GL_GET_PROC_SUFFIX(PathCommands, NV); |
| GR_GL_GET_PROC_SUFFIX(PathCoords, NV); |
| GR_GL_GET_PROC_SUFFIX(PathSubCommands, NV); |
| GR_GL_GET_PROC_SUFFIX(PathSubCoords, NV); |
| GR_GL_GET_PROC_SUFFIX(PathString, NV); |
| GR_GL_GET_PROC_SUFFIX(PathGlyphs, NV); |
| GR_GL_GET_PROC_SUFFIX(PathGlyphRange, NV); |
| GR_GL_GET_PROC_SUFFIX(WeightPaths, NV); |
| GR_GL_GET_PROC_SUFFIX(CopyPath, NV); |
| GR_GL_GET_PROC_SUFFIX(InterpolatePaths, NV); |
| GR_GL_GET_PROC_SUFFIX(TransformPath, NV); |
| GR_GL_GET_PROC_SUFFIX(PathParameteriv, NV); |
| GR_GL_GET_PROC_SUFFIX(PathParameteri, NV); |
| GR_GL_GET_PROC_SUFFIX(PathParameterfv, NV); |
| GR_GL_GET_PROC_SUFFIX(PathParameterf, NV); |
| GR_GL_GET_PROC_SUFFIX(PathDashArray, NV); |
| GR_GL_GET_PROC_SUFFIX(GenPaths, NV); |
| GR_GL_GET_PROC_SUFFIX(DeletePaths, NV); |
| GR_GL_GET_PROC_SUFFIX(IsPath, NV); |
| GR_GL_GET_PROC_SUFFIX(PathStencilFunc, NV); |
| GR_GL_GET_PROC_SUFFIX(PathStencilDepthOffset, NV); |
| GR_GL_GET_PROC_SUFFIX(StencilFillPath, NV); |
| GR_GL_GET_PROC_SUFFIX(StencilStrokePath, NV); |
| GR_GL_GET_PROC_SUFFIX(StencilFillPathInstanced, NV); |
| GR_GL_GET_PROC_SUFFIX(StencilStrokePathInstanced, NV); |
| GR_GL_GET_PROC_SUFFIX(PathCoverDepthFunc, NV); |
| GR_GL_GET_PROC_SUFFIX(PathColorGen, NV); |
| GR_GL_GET_PROC_SUFFIX(PathTexGen, NV); |
| GR_GL_GET_PROC_SUFFIX(PathFogGen, NV); |
| GR_GL_GET_PROC_SUFFIX(CoverFillPath, NV); |
| GR_GL_GET_PROC_SUFFIX(CoverStrokePath, NV); |
| GR_GL_GET_PROC_SUFFIX(CoverFillPathInstanced, NV); |
| GR_GL_GET_PROC_SUFFIX(CoverStrokePathInstanced, NV); |
| GR_GL_GET_PROC_SUFFIX(GetPathParameteriv, NV); |
| GR_GL_GET_PROC_SUFFIX(GetPathParameterfv, NV); |
| GR_GL_GET_PROC_SUFFIX(GetPathCommands, NV); |
| GR_GL_GET_PROC_SUFFIX(GetPathCoords, NV); |
| GR_GL_GET_PROC_SUFFIX(GetPathDashArray, NV); |
| GR_GL_GET_PROC_SUFFIX(GetPathMetrics, NV); |
| GR_GL_GET_PROC_SUFFIX(GetPathMetricRange, NV); |
| GR_GL_GET_PROC_SUFFIX(GetPathSpacing, NV); |
| GR_GL_GET_PROC_SUFFIX(GetPathColorGeniv, NV); |
| GR_GL_GET_PROC_SUFFIX(GetPathColorGenfv, NV); |
| GR_GL_GET_PROC_SUFFIX(GetPathTexGeniv, NV); |
| GR_GL_GET_PROC_SUFFIX(GetPathTexGenfv, NV); |
| GR_GL_GET_PROC_SUFFIX(IsPointInFillPath, NV); |
| GR_GL_GET_PROC_SUFFIX(IsPointInStrokePath, NV); |
| GR_GL_GET_PROC_SUFFIX(GetPathLength, NV); |
| GR_GL_GET_PROC_SUFFIX(PointAlongPath, NV); |
| } |
| |
| interface->fBindingsExported = kDesktop_GrGLBinding; |
| |
| return interface; |
| } else { |
| return NULL; |
| } |
| } |
