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/*
* 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 "../GrGLUtil.h"
#define GL_GLEXT_PROTOTYPES
#include "osmesa_wrapper.h"
#define GR_GL_GET_PROC(F) interface->fFunctions.f ## F = (GrGL ## F ## Proc) \
OSMesaGetProcAddress("gl" #F);
#define GR_GL_GET_PROC_SUFFIX(F, S) interface->fFunctions.f ## F = (GrGL ## F ## Proc) \
OSMesaGetProcAddress("gl" #F #S);
// We use OSMesaGetProcAddress for every gl function to avoid accidentally using
// non-Mesa gl functions.
const GrGLInterface* GrGLCreateMesaInterface() {
if (NULL == OSMesaGetCurrentContext()) {
return NULL;
}
GrGLGetStringProc getString = (GrGLGetStringProc) OSMesaGetProcAddress("glGetString");
GrGLGetStringiProc getStringi = (GrGLGetStringiProc) OSMesaGetProcAddress("glGetStringi");
GrGLGetIntegervProc getIntegerv =
(GrGLGetIntegervProc) OSMesaGetProcAddress("glGetIntegerv");
GrGLExtensions extensions;
if (!extensions.init(kGL_GrGLStandard, getString, getStringi, getIntegerv)) {
return NULL;
}
const char* versionString = (const char*) getString(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 = SkNEW(GrGLInterface());
GR_GL_GET_PROC(ActiveTexture);
GR_GL_GET_PROC(BeginQuery);
GR_GL_GET_PROC(AttachShader);
GR_GL_GET_PROC(BindAttribLocation);
GR_GL_GET_PROC(BindBuffer);
GR_GL_GET_PROC(BindFragDataLocation);
GR_GL_GET_PROC(BindTexture);
GR_GL_GET_PROC(BlendFunc);
if (glVer >= GR_GL_VER(1,4) ||
extensions.has("GL_ARB_imaging") ||
extensions.has("GL_EXT_blend_color")) {
GR_GL_GET_PROC(BlendColor);
}
GR_GL_GET_PROC(BufferData);
GR_GL_GET_PROC(BufferSubData);
GR_GL_GET_PROC(Clear);
GR_GL_GET_PROC(ClearColor);
GR_GL_GET_PROC(ClearStencil);
GR_GL_GET_PROC(ColorMask);
GR_GL_GET_PROC(CompileShader);
GR_GL_GET_PROC(CompressedTexImage2D);
GR_GL_GET_PROC(CopyTexSubImage2D);
GR_GL_GET_PROC(CreateProgram);
GR_GL_GET_PROC(CreateShader);
GR_GL_GET_PROC(CullFace);
GR_GL_GET_PROC(DeleteBuffers);
GR_GL_GET_PROC(DeleteProgram);
GR_GL_GET_PROC(DeleteQueries);
GR_GL_GET_PROC(DeleteShader);
GR_GL_GET_PROC(DeleteTextures);
GR_GL_GET_PROC(DepthMask);
GR_GL_GET_PROC(Disable);
GR_GL_GET_PROC(DisableVertexAttribArray);
GR_GL_GET_PROC(DrawArrays);
GR_GL_GET_PROC(DrawBuffer);
GR_GL_GET_PROC(DrawBuffers);
GR_GL_GET_PROC(DrawElements);
GR_GL_GET_PROC(Enable);
GR_GL_GET_PROC(EnableVertexAttribArray);
GR_GL_GET_PROC(EndQuery);
GR_GL_GET_PROC(Finish);
GR_GL_GET_PROC(Flush);
GR_GL_GET_PROC(FrontFace);
GR_GL_GET_PROC(GenBuffers);
GR_GL_GET_PROC(GenerateMipmap);
GR_GL_GET_PROC(GenQueries);
GR_GL_GET_PROC(GetBufferParameteriv);
GR_GL_GET_PROC(GetError);
GR_GL_GET_PROC(GetIntegerv);
GR_GL_GET_PROC(GetProgramInfoLog);
GR_GL_GET_PROC(GetProgramiv);
if (glVer >= GR_GL_VER(3,3) || extensions.has("GL_ARB_timer_query")) {
GR_GL_GET_PROC(GetQueryObjecti64v);
GR_GL_GET_PROC(GetQueryObjectui64v)
GR_GL_GET_PROC(QueryCounter);
} else if (extensions.has("GL_EXT_timer_query")) {
GR_GL_GET_PROC_SUFFIX(GetQueryObjecti64v, EXT);
GR_GL_GET_PROC_SUFFIX(GetQueryObjectui64v, EXT);
}
GR_GL_GET_PROC(GetQueryObjectiv);
GR_GL_GET_PROC(GetQueryObjectuiv);
GR_GL_GET_PROC(GetQueryiv);
GR_GL_GET_PROC(GetShaderInfoLog);
GR_GL_GET_PROC(GetShaderiv);
GR_GL_GET_PROC(GetString);
GR_GL_GET_PROC(GetStringi);
GR_GL_GET_PROC(GetTexLevelParameteriv);
GR_GL_GET_PROC(GenTextures);
GR_GL_GET_PROC(GetUniformLocation);
GR_GL_GET_PROC(LineWidth);
GR_GL_GET_PROC(LinkProgram);
GR_GL_GET_PROC(LoadIdentity);
GR_GL_GET_PROC(LoadMatrixf);
GR_GL_GET_PROC(MatrixMode);
GR_GL_GET_PROC(MapBuffer);
GR_GL_GET_PROC(PixelStorei);
GR_GL_GET_PROC(ReadBuffer);
GR_GL_GET_PROC(ReadPixels);
GR_GL_GET_PROC(Scissor);
GR_GL_GET_PROC(ShaderSource);
GR_GL_GET_PROC(StencilFunc);
GR_GL_GET_PROC(StencilFuncSeparate);
GR_GL_GET_PROC(StencilMask);
GR_GL_GET_PROC(StencilMaskSeparate);
GR_GL_GET_PROC(StencilOp);
GR_GL_GET_PROC(StencilOpSeparate);
GR_GL_GET_PROC(TexGenfv);
GR_GL_GET_PROC(TexGeni);
GR_GL_GET_PROC(TexImage2D)
GR_GL_GET_PROC(TexParameteri);
GR_GL_GET_PROC(TexParameteriv);
GR_GL_GET_PROC(TexStorage2D);
if (NULL == interface->fFunctions.fTexStorage2D) {
GR_GL_GET_PROC_SUFFIX(TexStorage2D, EXT);
}
GR_GL_GET_PROC(TexSubImage2D);
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);
GR_GL_GET_PROC(Viewport);
if (glVer >= GR_GL_VER(3,0) || extensions.has("GL_ARB_vertex_array_object")) {
// no ARB suffix for GL_ARB_vertex_array_object
GR_GL_GET_PROC(BindVertexArray);
GR_GL_GET_PROC(DeleteVertexArrays);
GR_GL_GET_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")) {
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 (extensions.has("GL_EXT_framebuffer_object")) {
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 (extensions.has("GL_EXT_framebuffer_multisample")) {
GR_GL_GET_PROC_SUFFIX(RenderbufferStorageMultisample, EXT);
}
if (extensions.has("GL_EXT_framebuffer_blit")) {
GR_GL_GET_PROC_SUFFIX(BlitFramebuffer, EXT);
}
} else {
// we must have FBOs
delete interface;
return NULL;
}
GR_GL_GET_PROC(BindFragDataLocationIndexed);
if (extensions.has("GL_EXT_debug_marker")) {
GR_GL_GET_PROC_SUFFIX(InsertEventMarker, EXT);
GR_GL_GET_PROC_SUFFIX(PopGroupMarker, EXT);
GR_GL_GET_PROC_SUFFIX(PushGroupMarker, EXT);
}
if (glVer >= GR_GL_VER(4,3) || extensions.has("GL_ARB_invalidate_subdata")) {
GR_GL_GET_PROC(InvalidateBufferData);
GR_GL_GET_PROC(InvalidateBufferSubData);
GR_GL_GET_PROC(InvalidateFramebuffer);
GR_GL_GET_PROC(InvalidateSubFramebuffer);
GR_GL_GET_PROC(InvalidateTexImage);
GR_GL_GET_PROC(InvalidateTexSubImage);
}
interface->fStandard = kGL_GrGLStandard;
interface->fExtensions.swap(&extensions);
return interface;
}
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