| |
| /* |
| * 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" |
| |
| #include <OpenGL/gl.h> |
| #include <OpenGL/glext.h> |
| |
| #include <dlfcn.h> |
| |
| static void* GetProcAddress(const char* name) { |
| return dlsym(RTLD_DEFAULT, 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() { |
| // The gl functions are not context-specific so we create one global |
| // interface |
| static SkAutoTUnref<GrGLInterface> glInterface; |
| if (!glInterface.get()) { |
| GrGLInterface* interface = new GrGLInterface; |
| glInterface.reset(interface); |
| const char* verStr = (const char*) glGetString(GL_VERSION); |
| GrGLVersion ver = GrGLGetVersionFromString(verStr); |
| const char* extStr = (const char*) glGetString(GL_EXTENSIONS); |
| |
| interface->fBindingsExported = kDesktop_GrGLBinding; |
| interface->fActiveTexture = glActiveTexture; |
| interface->fAttachShader = glAttachShader; |
| interface->fBeginQuery = glBeginQuery; |
| interface->fBindAttribLocation = glBindAttribLocation; |
| interface->fBindBuffer = glBindBuffer; |
| if (ver >= GR_GL_VER(3,0)) { |
| #if GL_VERSION_3_0 |
| interface->fBindFragDataLocation = glBindFragDataLocation; |
| #else |
| interface->fBindFragDataLocation = GET_PROC(BindFragDataLocation); |
| #endif |
| } |
| interface->fBindTexture = glBindTexture; |
| interface->fBlendFunc = glBlendFunc; |
| |
| if (ver >= GR_GL_VER(1,4)) { |
| interface->fBlendColor = glBlendColor; |
| } else if (GrGLHasExtensionFromString("GL_ARB_imaging", extStr) || |
| GrGLHasExtensionFromString("GL_EXT_blend_color", extStr)) { |
| GET_PROC(BlendColor); |
| } |
| |
| interface->fBufferData = glBufferData; |
| interface->fBufferSubData = glBufferSubData; |
| interface->fClear = glClear; |
| interface->fClearColor = glClearColor; |
| interface->fClearStencil = glClearStencil; |
| interface->fColorMask = glColorMask; |
| interface->fCompileShader = glCompileShader; |
| interface->fCompressedTexImage2D = glCompressedTexImage2D; |
| interface->fCreateProgram = glCreateProgram; |
| interface->fCreateShader = glCreateShader; |
| interface->fCullFace = glCullFace; |
| interface->fDeleteBuffers = glDeleteBuffers; |
| interface->fDeleteProgram = glDeleteProgram; |
| interface->fDeleteQueries = glDeleteQueries; |
| interface->fDeleteShader = glDeleteShader; |
| interface->fDeleteTextures = glDeleteTextures; |
| interface->fDepthMask = glDepthMask; |
| interface->fDisable = glDisable; |
| interface->fDisableVertexAttribArray = |
| glDisableVertexAttribArray; |
| interface->fDrawArrays = glDrawArrays; |
| interface->fDrawBuffer = glDrawBuffer; |
| interface->fDrawBuffers = glDrawBuffers; |
| interface->fDrawElements = glDrawElements; |
| interface->fEnable = glEnable; |
| interface->fEnableVertexAttribArray = glEnableVertexAttribArray; |
| interface->fEndQuery = glEndQuery; |
| interface->fFinish = glFinish; |
| interface->fFlush = glFlush; |
| interface->fFrontFace = glFrontFace; |
| interface->fGenBuffers = glGenBuffers; |
| interface->fGenQueries = glGenQueries; |
| interface->fGetBufferParameteriv = glGetBufferParameteriv; |
| interface->fGetError = glGetError; |
| interface->fGetIntegerv = glGetIntegerv; |
| interface->fGetProgramInfoLog = glGetProgramInfoLog; |
| interface->fGetProgramiv = glGetProgramiv; |
| interface->fGetQueryiv = glGetQueryiv; |
| interface->fGetQueryObjectiv = glGetQueryObjectiv; |
| interface->fGetQueryObjectuiv = glGetQueryObjectuiv; |
| interface->fGetShaderInfoLog = glGetShaderInfoLog; |
| interface->fGetShaderiv = glGetShaderiv; |
| interface->fGetString = glGetString; |
| interface->fGetTexLevelParameteriv = glGetTexLevelParameteriv; |
| interface->fGenTextures = glGenTextures; |
| interface->fGetUniformLocation = glGetUniformLocation; |
| interface->fLineWidth = glLineWidth; |
| interface->fLinkProgram = glLinkProgram; |
| interface->fMapBuffer = glMapBuffer; |
| interface->fPixelStorei = glPixelStorei; |
| interface->fReadBuffer = glReadBuffer; |
| interface->fReadPixels = glReadPixels; |
| interface->fScissor = glScissor; |
| // The new OpenGLES2 header has an extra "const" in it. :( |
| #if GR_USE_NEW_GL_SHADER_SOURCE_SIGNATURE |
| interface->fShaderSource = (GrGLShaderSourceProc) glShaderSource; |
| #else |
| interface->fShaderSource = glShaderSource; |
| #endif |
| interface->fStencilFunc = glStencilFunc; |
| interface->fStencilFuncSeparate = glStencilFuncSeparate; |
| interface->fStencilMask = glStencilMask; |
| interface->fStencilMaskSeparate = glStencilMaskSeparate; |
| interface->fStencilOp = glStencilOp; |
| interface->fStencilOpSeparate = glStencilOpSeparate; |
| // mac uses GLenum for internalFormat param (non-standard) |
| // amounts to int vs. uint. |
| interface->fTexImage2D = (GrGLTexImage2DProc)glTexImage2D; |
| interface->fTexParameteri = glTexParameteri; |
| interface->fTexParameteriv = glTexParameteriv; |
| #if GL_ARB_texture_storage || GL_VERSION_4_2 |
| interface->fTexStorage2D = glTexStorage2D |
| #elif GL_EXT_texture_storage |
| interface->fTexStorage2D = glTexStorage2DEXT; |
| #else |
| if (ver >= GR_GL_VER(4,2) || |
| GrGLHasExtensionFromString("GL_ARB_texture_storage", extStr)) { |
| GET_PROC(TexStorage2D); |
| } else if (GrGLHasExtensionFromString("GL_EXT_texture_storage", extStr)) { |
| GET_PROC_SUFFIX(TexStorage2D, EXT); |
| } |
| #endif |
| interface->fTexSubImage2D = glTexSubImage2D; |
| interface->fUniform1f = glUniform1f; |
| interface->fUniform1i = glUniform1i; |
| interface->fUniform1fv = glUniform1fv; |
| interface->fUniform1iv = glUniform1iv; |
| interface->fUniform2f = glUniform2f; |
| interface->fUniform2i = glUniform2i; |
| interface->fUniform2fv = glUniform2fv; |
| interface->fUniform2iv = glUniform2iv; |
| interface->fUniform3f = glUniform3f; |
| interface->fUniform3i = glUniform3i; |
| interface->fUniform3fv = glUniform3fv; |
| interface->fUniform3iv = glUniform3iv; |
| interface->fUniform4f = glUniform4f; |
| interface->fUniform4i = glUniform4i; |
| interface->fUniform4fv = glUniform4fv; |
| interface->fUniform4iv = glUniform4iv; |
| interface->fUniform4fv = glUniform4fv; |
| interface->fUniformMatrix2fv = glUniformMatrix2fv; |
| interface->fUniformMatrix3fv = glUniformMatrix3fv; |
| interface->fUniformMatrix4fv = glUniformMatrix4fv; |
| interface->fUnmapBuffer = glUnmapBuffer; |
| interface->fUseProgram = glUseProgram; |
| interface->fVertexAttrib4fv = glVertexAttrib4fv; |
| interface->fVertexAttribPointer = glVertexAttribPointer; |
| interface->fViewport = glViewport; |
| |
| if (ver >= GR_GL_VER(3,3) || GrGLHasExtensionFromString("GL_ARB_timer_query", extStr)) { |
| // ARB extension doesn't use the ARB suffix on the function name |
| #if GL_ARB_timer_query || GL_VERSION_3_3 |
| interface->fQueryCounter = glQueryCounter; |
| interface->fGetQueryObjecti64v = glGetQueryObjecti64v; |
| interface->fGetQueryObjectui64v = glGetQueryObjectui64v; |
| #else |
| interface->fQueryCounter = GET_PROC(QueryCounter); |
| interface->fGetQueryObjecti64v = GET_PROC(GetQueryObjecti64v); |
| interface->fGetQueryObjectui64v = GET_PROC(GetQueryObjectui64v); |
| #endif |
| } else if (GrGLHasExtensionFromString("GL_EXT_timer_query", extStr)) { |
| #if GL_EXT_timer_query |
| interface->fGetQueryObjecti64v = glGetQueryObjecti64vEXT; |
| interface->fGetQueryObjectui64v = glGetQueryObjectui64vEXT; |
| #else |
| interface->fGetQueryObjecti64v = GET_PROC_SUFFIX(GetQueryObjecti64v, EXT); |
| interface->fGetQueryObjectui64v = GET_PROC_SUFFIX(GetQueryObjectui64v, EXT); |
| #endif |
| } |
| |
| if (ver >= GR_GL_VER(3,0) || GrGLHasExtensionFromString("GL_ARB_framebuffer_object", extStr)) { |
| // ARB extension doesn't use the ARB suffix on the function names |
| #if GL_VERSION_3_0 || GL_ARB_framebuffer_object |
| interface->fGenFramebuffers = glGenFramebuffers; |
| interface->fGetFramebufferAttachmentParameteriv = glGetFramebufferAttachmentParameteriv; |
| interface->fGetRenderbufferParameteriv = glGetRenderbufferParameteriv; |
| interface->fBindFramebuffer = glBindFramebuffer; |
| interface->fFramebufferTexture2D = glFramebufferTexture2D; |
| interface->fCheckFramebufferStatus = glCheckFramebufferStatus; |
| interface->fDeleteFramebuffers = glDeleteFramebuffers; |
| interface->fRenderbufferStorage = glRenderbufferStorage; |
| interface->fGenRenderbuffers = glGenRenderbuffers; |
| interface->fDeleteRenderbuffers = glDeleteRenderbuffers; |
| interface->fFramebufferRenderbuffer = glFramebufferRenderbuffer; |
| interface->fBindRenderbuffer = glBindRenderbuffer; |
| interface->fRenderbufferStorageMultisample = glRenderbufferStorageMultisample; |
| interface->fBlitFramebuffer = glBlitFramebuffer; |
| #else |
| interface->fGenFramebuffers = GET_PROC(GenFramebuffers); |
| interface->fGetFramebufferAttachmentParameteriv = GET_PROC(GetFramebufferAttachmentParameteriv); |
| interface->fGetRenderbufferParameteriv = GET_PROC(GetRenderbufferParameteriv); |
| interface->fBindFramebuffer = GET_PROC(BindFramebuffer); |
| interface->fFramebufferTexture2D = GET_PROC(FramebufferTexture2D); |
| interface->fCheckFramebufferStatus = GET_PROC(CheckFramebufferStatus); |
| interface->fDeleteFramebuffers = GET_PROC(DeleteFramebuffers); |
| interface->fRenderbufferStorage = GET_PROC(RenderbufferStorage); |
| interface->fGenRenderbuffers = GET_PROC(GenRenderbuffers); |
| interface->fDeleteRenderbuffers = GET_PROC(DeleteRenderbuffers); |
| interface->fFramebufferRenderbuffer = GET_PROC(FramebufferRenderbuffer); |
| interface->fBindRenderbuffer = GET_PROC(BindRenderbuffer); |
| interface->fRenderbufferStorageMultisample = GET_PROC(RenderbufferStorageMultisample); |
| interface->fBlitFramebuffer = GET_PROC(BlitFramebuffer); |
| #endif |
| } else { |
| if (GrGLHasExtensionFromString("GL_EXT_framebuffer_object", extStr)) { |
| #if GL_EXT_framebuffer_object |
| interface->fGenFramebuffers = glGenFramebuffersEXT; |
| interface->fGetFramebufferAttachmentParameteriv = glGetFramebufferAttachmentParameterivEXT; |
| interface->fGetRenderbufferParameteriv = glGetRenderbufferParameterivEXT; |
| interface->fBindFramebuffer = glBindFramebufferEXT; |
| interface->fFramebufferTexture2D = glFramebufferTexture2DEXT; |
| interface->fCheckFramebufferStatus = glCheckFramebufferStatusEXT; |
| interface->fDeleteFramebuffers = glDeleteFramebuffersEXT; |
| interface->fRenderbufferStorage = glRenderbufferStorageEXT; |
| interface->fGenRenderbuffers = glGenRenderbuffersEXT; |
| interface->fDeleteRenderbuffers = glDeleteRenderbuffersEXT; |
| interface->fFramebufferRenderbuffer = glFramebufferRenderbufferEXT; |
| interface->fBindRenderbuffer = glBindRenderbufferEXT; |
| #else |
| interface->fGenFramebuffers = GET_PROC_SUFFIX(GenFramebuffers, EXT); |
| interface->fGetFramebufferAttachmentParameteriv = GET_PROC_SUFFIX(GetFramebufferAttachmentParameteriv, EXT); |
| interface->fGetRenderbufferParameteriv = GET_PROC_SUFFIX(GetRenderbufferParameteriv, EXT); |
| interface->fBindFramebuffer = GET_PROC_SUFFIX(BindFramebuffer, EXT); |
| interface->fFramebufferTexture2D = GET_PROC_SUFFIX(FramebufferTexture2D, EXT); |
| interface->fCheckFramebufferStatus = GET_PROC_SUFFIX(CheckFramebufferStatus, EXT); |
| interface->fDeleteFramebuffers = GET_PROC_SUFFIX(DeleteFramebuffers, EXT); |
| interface->fRenderbufferStorage = GET_PROC_SUFFIX(RenderbufferStorage, EXT); |
| interface->fGenRenderbuffers = GET_PROC_SUFFIX(GenRenderbuffers, EXT); |
| interface->fDeleteRenderbuffers = GET_PROC_SUFFIX(DeleteRenderbuffers, EXT); |
| interface->fFramebufferRenderbuffer = GET_PROC_SUFFIX(FramebufferRenderbuffer, EXT); |
| interface->fBindRenderbuffer = GET_PROC_SUFFIX(BindRenderbuffer, EXT); |
| #endif |
| } |
| if (GrGLHasExtensionFromString("GL_EXT_framebuffer_multisample", extStr)) { |
| #if GL_EXT_framebuffer_multisample |
| interface->fRenderbufferStorageMultisample = glRenderbufferStorageMultisampleEXT; |
| #else |
| interface->fRenderbufferStorageMultisample = GET_PROC_SUFFIX(RenderbufferStorageMultisample, EXT); |
| #endif |
| } |
| if (GrGLHasExtensionFromString("", extStr)) { |
| #if GL_EXT_framebuffer_blit |
| interface->fBlitFramebuffer = glBlitFramebufferEXT; |
| #else |
| interface->fBlitFramebuffer = GET_PROC_SUFFIX(BlitFramebuffer, EXT); |
| #endif |
| } |
| } |
| if (ver >= GR_GL_VER(3,3) || GrGLHasExtensionFromString("GL_ARB_blend_func_extended", extStr)) { |
| // ARB extension doesn't use the ARB suffix on the function name |
| #if GL_VERSION_3_3 || GL_ARB_blend_func_extended |
| interface->fBindFragDataLocationIndexed = glBindFragDataLocationIndexed; |
| #else |
| interface->fBindFragDataLocationIndexed = GET_PROC(BindFragDataLocationIndexed); |
| #endif |
| } |
| |
| interface->fBindingsExported = kDesktop_GrGLBinding; |
| } |
| glInterface.get()->ref(); |
| return glInterface.get(); |
| } |
