| |
| /* |
| * 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/glx.h> |
| #include <GL/gl.h> |
| #include <GL/glext.h> |
| #include <GL/glu.h> |
| |
| #define GR_GL_GET_PROC(F) defaultInterface->f ## F = (GrGL ## F ## Proc) \ |
| glXGetProcAddress(reinterpret_cast<const GLubyte*>("gl" #F)); |
| #define GR_GL_GET_PROC_SUFFIX(F, S) defaultInterface->f ## F = (GrGL ## F ## Proc) \ |
| glXGetProcAddress(reinterpret_cast<const GLubyte*>("gl" #F #S)); |
| |
| void GrGLInitializeDefaultGLInterface() { |
| if (NULL != glXGetCurrentContext()) { |
| int major, minor; |
| const char* versionString = (const char*) glGetString(GL_VERSION); |
| const char* extString = (const char*) glGetString(GL_EXTENSIONS); |
| gl_version_from_string(&major, &minor, versionString); |
| |
| if (major == 1 && minor < 5) { |
| // We must have array and element_array buffer objects. |
| return; |
| } |
| |
| GrGLInterface* defaultInterface = new GrGLInterface(); |
| |
| defaultInterface->fNPOTRenderTargetSupport = kProbe_GrGLCapability; |
| defaultInterface->fMinRenderTargetHeight = kProbe_GrGLCapability; |
| defaultInterface->fMinRenderTargetWidth = kProbe_GrGLCapability; |
| |
| defaultInterface->fActiveTexture = glActiveTexture; |
| GR_GL_GET_PROC(AttachShader); |
| GR_GL_GET_PROC(BindAttribLocation); |
| GR_GL_GET_PROC(BindBuffer); |
| defaultInterface->fBindTexture = glBindTexture; |
| defaultInterface->fBlendColor = glBlendColor; |
| defaultInterface->fBlendFunc = glBlendFunc; |
| GR_GL_GET_PROC(BufferData); |
| GR_GL_GET_PROC(BufferSubData); |
| defaultInterface->fClear = glClear; |
| defaultInterface->fClearColor = glClearColor; |
| defaultInterface->fClearStencil = glClearStencil; |
| defaultInterface->fClientActiveTexture = glClientActiveTexture; |
| defaultInterface->fColorMask = glColorMask; |
| defaultInterface->fColorPointer = glColorPointer; |
| defaultInterface->fColor4ub = glColor4ub; |
| GR_GL_GET_PROC(CompileShader); |
| defaultInterface->fCompressedTexImage2D = glCompressedTexImage2D; |
| GR_GL_GET_PROC(CreateProgram); |
| GR_GL_GET_PROC(CreateShader); |
| defaultInterface->fCullFace = glCullFace; |
| GR_GL_GET_PROC(DeleteBuffers); |
| GR_GL_GET_PROC(DeleteProgram); |
| GR_GL_GET_PROC(DeleteShader); |
| defaultInterface->fDeleteTextures = glDeleteTextures; |
| defaultInterface->fDepthMask = glDepthMask; |
| defaultInterface->fDisable = glDisable; |
| defaultInterface->fDisableClientState = glDisableClientState; |
| GR_GL_GET_PROC(DisableVertexAttribArray); |
| defaultInterface->fDrawArrays = glDrawArrays; |
| defaultInterface->fDrawBuffer = glDrawBuffer; |
| GR_GL_GET_PROC(DrawBuffers); |
| defaultInterface->fDrawElements = glDrawElements; |
| defaultInterface->fEnable = glEnable; |
| defaultInterface->fEnableClientState = glEnableClientState; |
| GR_GL_GET_PROC(EnableVertexAttribArray); |
| defaultInterface->fFrontFace = glFrontFace; |
| GR_GL_GET_PROC(GenBuffers); |
| GR_GL_GET_PROC(GetBufferParameteriv); |
| defaultInterface->fGetError = glGetError; |
| defaultInterface->fGetIntegerv = glGetIntegerv; |
| GR_GL_GET_PROC(GetProgramInfoLog); |
| GR_GL_GET_PROC(GetProgramiv); |
| GR_GL_GET_PROC(GetShaderInfoLog); |
| GR_GL_GET_PROC(GetShaderiv); |
| defaultInterface->fGetString = glGetString; |
| defaultInterface->fGetTexLevelParameteriv = glGetTexLevelParameteriv; |
| defaultInterface->fGenTextures = glGenTextures; |
| GR_GL_GET_PROC(GetUniformLocation); |
| defaultInterface->fLineWidth = glLineWidth; |
| GR_GL_GET_PROC(LinkProgram); |
| defaultInterface->fLoadMatrixf = glLoadMatrixf; |
| GR_GL_GET_PROC(MapBuffer); |
| defaultInterface->fMatrixMode = glMatrixMode; |
| defaultInterface->fPointSize = glPointSize; |
| defaultInterface->fPixelStorei = glPixelStorei; |
| defaultInterface->fReadBuffer = glReadBuffer; |
| defaultInterface->fReadPixels = glReadPixels; |
| defaultInterface->fScissor = glScissor; |
| defaultInterface->fShadeModel = glShadeModel; |
| GR_GL_GET_PROC(ShaderSource); |
| defaultInterface->fStencilFunc = glStencilFunc; |
| GR_GL_GET_PROC(StencilFuncSeparate); |
| defaultInterface->fStencilMask = glStencilMask; |
| GR_GL_GET_PROC(StencilMaskSeparate); |
| defaultInterface->fStencilOp = glStencilOp; |
| GR_GL_GET_PROC(StencilOpSeparate); |
| defaultInterface->fTexCoordPointer = glTexCoordPointer; |
| defaultInterface->fTexEnvi = glTexEnvi; |
| defaultInterface->fTexImage2D = glTexImage2D; |
| defaultInterface->fTexParameteri = glTexParameteri; |
| defaultInterface->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); |
| defaultInterface->fVertexPointer = glVertexPointer; |
| defaultInterface->fViewport = glViewport; |
| 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 (major >= 3 || has_gl_extension_from_string( |
| "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 (has_gl_extension_from_string("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 (has_gl_extension_from_string("GL_EXT_framebuffer_multisample", |
| extString)) { |
| GR_GL_GET_PROC_SUFFIX(RenderbufferStorageMultisample, EXT); |
| } |
| if (has_gl_extension_from_string("GL_EXT_framebuffer_blit", |
| extString)) { |
| GR_GL_GET_PROC_SUFFIX(BlitFramebuffer, EXT); |
| } |
| } else { |
| // we must have FBOs |
| return; |
| } |
| defaultInterface->fBindingsExported = kDesktop_GrGLBinding; |
| |
| GrGLSetDefaultGLInterface(defaultInterface)->unref(); |
| } |
| } |