| |
| /* |
| * 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 "GrGLInterface.h" |
| |
| #include "GL/osmesa.h" |
| #include <GL/glext.h> |
| #include <GL/glu.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); |
| |
| const GrGLInterface* GrGLDefaultInterface() { |
| if (NULL != OSMesaGetCurrentContext()) { |
| 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(); |
| interface->fNPOTRenderTargetSupport = kProbe_GrGLCapability; |
| interface->fMinRenderTargetHeight = kProbe_GrGLCapability; |
| interface->fMinRenderTargetWidth = kProbe_GrGLCapability; |
| |
| interface->fActiveTexture = glActiveTexture;GrGLIn |
| GR_GL_GET_PROC(AttachShader); |
| GR_GL_GET_PROC(BindAttribLocation); |
| GR_GL_GET_PROC(BindBuffer); |
| GR_GL_GET_PROC(BindFragDataLocation); |
| interface->fBindTexture = glBindTexture; |
| interface->fBlendColor = glBlendColor; |
| interface->fBlendFunc = glBlendFunc; |
| GR_GL_GET_PROC(BufferData); |
| GR_GL_GET_PROC(BufferSubData); |
| interface->fClear = glClear; |
| interface->fClearColor = glClearColor; |
| interface->fClearStencil = glClearStencil; |
| interface->fClientActiveTexture = glClientActiveTexture; |
| interface->fColorMask = glColorMask; |
| interface->fColorPointer = glColorPointer; |
| interface->fColor4ub = glColor4ub; |
| GR_GL_GET_PROC(CompileShader); |
| interface->fCompressedTexImage2D = glCompressedTexImage2D; |
| GR_GL_GET_PROC(CreateProgram); |
| GR_GL_GET_PROC(CreateShader); |
| interface->fCullFace = glCullFace; |
| GR_GL_GET_PROC(DeleteBuffers); |
| GR_GL_GET_PROC(DeleteProgram); |
| GR_GL_GET_PROC(DeleteShader); |
| interface->fDeleteTextures = glDeleteTextures; |
| interface->fDepthMask = glDepthMask; |
| interface->fDisable = glDisable; |
| interface->fDisableClientState = glDisableClientState; |
| GR_GL_GET_PROC(DisableVertexAttribArray); |
| interface->fDrawArrays = glDrawArrays; |
| interface->fDrawBuffer = glDrawBuffer; |
| GR_GL_GET_PROC(DrawBuffers); |
| interface->fDrawElements = glDrawElements; |
| interface->fEnable = glEnable; |
| interface->fEnableClientState = glEnableClientState; |
| GR_GL_GET_PROC(EnableVertexAttribArray); |
| interface->fFrontFace = glFrontFace; |
| GR_GL_GET_PROC(GenBuffers); |
| GR_GL_GET_PROC(GetBufferParameteriv); |
| interface->fGetError = glGetError; |
| interface->fGetIntegerv = glGetIntegerv; |
| GR_GL_GET_PROC(GetProgramInfoLog); |
| GR_GL_GET_PROC(GetProgramiv); |
| GR_GL_GET_PROC(GetShaderInfoLog); |
| GR_GL_GET_PROC(GetShaderiv); |
| interface->fGetString = glGetString; |
| interface->fGetTexLevelParameteriv = glGetTexLevelParameteriv; |
| interface->fGenTextures = glGenTextures; |
| GR_GL_GET_PROC(GetUniformLocation); |
| interface->fLineWidth = glLineWidth; |
| GR_GL_GET_PROC(LinkProgram); |
| interface->fLoadMatrixf = glLoadMatrixf; |
| GR_GL_GET_PROC(MapBuffer); |
| interface->fMatrixMode = glMatrixMode; |
| interface->fPointSize = glPointSize; |
| interface->fPixelStorei = glPixelStorei; |
| interface->fReadBuffer = glReadBuffer; |
| interface->fReadPixels = glReadPixels; |
| interface->fScissor = glScissor; |
| interface->fShadeModel = glShadeModel; |
| GR_GL_GET_PROC(ShaderSource); |
| interface->fStencilFunc = glStencilFunc; |
| GR_GL_GET_PROC(StencilFuncSeparate); |
| interface->fStencilMask = glStencilMask; |
| GR_GL_GET_PROC(StencilMaskSeparate); |
| interface->fStencilOp = glStencilOp; |
| GR_GL_GET_PROC(StencilOpSeparate); |
| interface->fTexCoordPointer = glTexCoordPointer; |
| interface->fTexEnvi = glTexEnvi; |
| //OSMesa on Mac's glTexImage2D takes a GLenum for internalFormat rather than a GLint. |
| interface->fTexImage2D = reinterpret_cast<GrGLTexImage2DProc>(glTexImage2D); |
| interface->fTexParameteri = glTexParameteri; |
| interface->fTexSubImage2D = glTexSubImage2D; |
| 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); |
| interface->fVertexPointer = glVertexPointer; |
| interface->fViewport = glViewport; |
| |
| // 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; |
| } |
| } |