1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/gpu/gl/mesa/GrGLCreateMesaInterface.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,232 @@
1.4 +
1.5 +/*
1.6 + * Copyright 2011 Google Inc.
1.7 + *
1.8 + * Use of this source code is governed by a BSD-style license that can be
1.9 + * found in the LICENSE file.
1.10 + */
1.11 +
1.12 +#include "gl/GrGLExtensions.h"
1.13 +#include "gl/GrGLInterface.h"
1.14 +#include "../GrGLUtil.h"
1.15 +
1.16 +#define GL_GLEXT_PROTOTYPES
1.17 +#include "osmesa_wrapper.h"
1.18 +
1.19 +#define GR_GL_GET_PROC(F) interface->fFunctions.f ## F = (GrGL ## F ## Proc) \
1.20 + OSMesaGetProcAddress("gl" #F);
1.21 +#define GR_GL_GET_PROC_SUFFIX(F, S) interface->fFunctions.f ## F = (GrGL ## F ## Proc) \
1.22 + OSMesaGetProcAddress("gl" #F #S);
1.23 +
1.24 +// We use OSMesaGetProcAddress for every gl function to avoid accidentally using
1.25 +// non-Mesa gl functions.
1.26 +
1.27 +const GrGLInterface* GrGLCreateMesaInterface() {
1.28 + if (NULL != OSMesaGetCurrentContext()) {
1.29 +
1.30 + GrGLGetStringProc getString = (GrGLGetStringProc) OSMesaGetProcAddress("glGetString");
1.31 + GrGLGetStringiProc getStringi = (GrGLGetStringiProc) OSMesaGetProcAddress("glGetStringi");
1.32 + GrGLGetIntegervProc getIntegerv =
1.33 + (GrGLGetIntegervProc) OSMesaGetProcAddress("glGetIntegerv");
1.34 +
1.35 + GrGLExtensions extensions;
1.36 + if (!extensions.init(kGL_GrGLStandard, getString, getStringi, getIntegerv)) {
1.37 + return NULL;
1.38 + }
1.39 +
1.40 + const char* versionString = (const char*) getString(GL_VERSION);
1.41 + GrGLVersion glVer = GrGLGetVersionFromString(versionString);
1.42 +
1.43 + if (glVer < GR_GL_VER(1,5)) {
1.44 + // We must have array and element_array buffer objects.
1.45 + return NULL;
1.46 + }
1.47 + GrGLInterface* interface = SkNEW(GrGLInterface());
1.48 +
1.49 + GR_GL_GET_PROC(ActiveTexture);
1.50 + GR_GL_GET_PROC(BeginQuery);
1.51 + GR_GL_GET_PROC(AttachShader);
1.52 + GR_GL_GET_PROC(BindAttribLocation);
1.53 + GR_GL_GET_PROC(BindBuffer);
1.54 + GR_GL_GET_PROC(BindFragDataLocation);
1.55 + GR_GL_GET_PROC(BindTexture);
1.56 + GR_GL_GET_PROC(BlendFunc);
1.57 +
1.58 + if (glVer >= GR_GL_VER(1,4) ||
1.59 + extensions.has("GL_ARB_imaging") ||
1.60 + extensions.has("GL_EXT_blend_color")) {
1.61 + GR_GL_GET_PROC(BlendColor);
1.62 + }
1.63 +
1.64 + GR_GL_GET_PROC(BufferData);
1.65 + GR_GL_GET_PROC(BufferSubData);
1.66 + GR_GL_GET_PROC(Clear);
1.67 + GR_GL_GET_PROC(ClearColor);
1.68 + GR_GL_GET_PROC(ClearStencil);
1.69 + GR_GL_GET_PROC(ColorMask);
1.70 + GR_GL_GET_PROC(CompileShader);
1.71 + GR_GL_GET_PROC(CompressedTexImage2D);
1.72 + GR_GL_GET_PROC(CopyTexSubImage2D);
1.73 + GR_GL_GET_PROC(CreateProgram);
1.74 + GR_GL_GET_PROC(CreateShader);
1.75 + GR_GL_GET_PROC(CullFace);
1.76 + GR_GL_GET_PROC(DeleteBuffers);
1.77 + GR_GL_GET_PROC(DeleteProgram);
1.78 + GR_GL_GET_PROC(DeleteQueries);
1.79 + GR_GL_GET_PROC(DeleteShader);
1.80 + GR_GL_GET_PROC(DeleteTextures);
1.81 + GR_GL_GET_PROC(DepthMask);
1.82 + GR_GL_GET_PROC(Disable);
1.83 + GR_GL_GET_PROC(DisableVertexAttribArray);
1.84 + GR_GL_GET_PROC(DrawArrays);
1.85 + GR_GL_GET_PROC(DrawBuffer);
1.86 + GR_GL_GET_PROC(DrawBuffers);
1.87 + GR_GL_GET_PROC(DrawElements);
1.88 + GR_GL_GET_PROC(Enable);
1.89 + GR_GL_GET_PROC(EnableVertexAttribArray);
1.90 + GR_GL_GET_PROC(EndQuery);
1.91 + GR_GL_GET_PROC(Finish);
1.92 + GR_GL_GET_PROC(Flush);
1.93 + GR_GL_GET_PROC(FrontFace);
1.94 + GR_GL_GET_PROC(GenBuffers);
1.95 + GR_GL_GET_PROC(GenerateMipmap);
1.96 + GR_GL_GET_PROC(GenQueries);
1.97 + GR_GL_GET_PROC(GetBufferParameteriv);
1.98 + GR_GL_GET_PROC(GetError);
1.99 + GR_GL_GET_PROC(GetIntegerv);
1.100 + GR_GL_GET_PROC(GetProgramInfoLog);
1.101 + GR_GL_GET_PROC(GetProgramiv);
1.102 + if (glVer >= GR_GL_VER(3,3) || extensions.has("GL_ARB_timer_query")) {
1.103 + GR_GL_GET_PROC(GetQueryObjecti64v);
1.104 + GR_GL_GET_PROC(GetQueryObjectui64v)
1.105 + GR_GL_GET_PROC(QueryCounter);
1.106 + } else if (extensions.has("GL_EXT_timer_query")) {
1.107 + GR_GL_GET_PROC_SUFFIX(GetQueryObjecti64v, EXT);
1.108 + GR_GL_GET_PROC_SUFFIX(GetQueryObjectui64v, EXT);
1.109 + }
1.110 + GR_GL_GET_PROC(GetQueryObjectiv);
1.111 + GR_GL_GET_PROC(GetQueryObjectuiv);
1.112 + GR_GL_GET_PROC(GetQueryiv);
1.113 + GR_GL_GET_PROC(GetShaderInfoLog);
1.114 + GR_GL_GET_PROC(GetShaderiv);
1.115 + GR_GL_GET_PROC(GetString);
1.116 + GR_GL_GET_PROC(GetStringi);
1.117 + GR_GL_GET_PROC(GetTexLevelParameteriv);
1.118 + GR_GL_GET_PROC(GenTextures);
1.119 + GR_GL_GET_PROC(GetUniformLocation);
1.120 + GR_GL_GET_PROC(LineWidth);
1.121 + GR_GL_GET_PROC(LinkProgram);
1.122 + GR_GL_GET_PROC(LoadIdentity);
1.123 + GR_GL_GET_PROC(LoadMatrixf);
1.124 + GR_GL_GET_PROC(MatrixMode);
1.125 + GR_GL_GET_PROC(MapBuffer);
1.126 + GR_GL_GET_PROC(PixelStorei);
1.127 + GR_GL_GET_PROC(ReadBuffer);
1.128 + GR_GL_GET_PROC(ReadPixels);
1.129 + GR_GL_GET_PROC(Scissor);
1.130 + GR_GL_GET_PROC(ShaderSource);
1.131 + GR_GL_GET_PROC(StencilFunc);
1.132 + GR_GL_GET_PROC(StencilFuncSeparate);
1.133 + GR_GL_GET_PROC(StencilMask);
1.134 + GR_GL_GET_PROC(StencilMaskSeparate);
1.135 + GR_GL_GET_PROC(StencilOp);
1.136 + GR_GL_GET_PROC(StencilOpSeparate);
1.137 + GR_GL_GET_PROC(TexGenfv);
1.138 + GR_GL_GET_PROC(TexGeni);
1.139 + GR_GL_GET_PROC(TexImage2D)
1.140 + GR_GL_GET_PROC(TexParameteri);
1.141 + GR_GL_GET_PROC(TexParameteriv);
1.142 + GR_GL_GET_PROC(TexStorage2D);
1.143 + if (NULL == interface->fFunctions.fTexStorage2D) {
1.144 + GR_GL_GET_PROC_SUFFIX(TexStorage2D, EXT);
1.145 + }
1.146 + GR_GL_GET_PROC(TexSubImage2D);
1.147 + GR_GL_GET_PROC(Uniform1f);
1.148 + GR_GL_GET_PROC(Uniform1i);
1.149 + GR_GL_GET_PROC(Uniform1fv);
1.150 + GR_GL_GET_PROC(Uniform1iv);
1.151 + GR_GL_GET_PROC(Uniform2f);
1.152 + GR_GL_GET_PROC(Uniform2i);
1.153 + GR_GL_GET_PROC(Uniform2fv);
1.154 + GR_GL_GET_PROC(Uniform2iv);
1.155 + GR_GL_GET_PROC(Uniform3f);
1.156 + GR_GL_GET_PROC(Uniform3i);
1.157 + GR_GL_GET_PROC(Uniform3fv);
1.158 + GR_GL_GET_PROC(Uniform3iv);
1.159 + GR_GL_GET_PROC(Uniform4f);
1.160 + GR_GL_GET_PROC(Uniform4i);
1.161 + GR_GL_GET_PROC(Uniform4fv);
1.162 + GR_GL_GET_PROC(Uniform4iv);
1.163 + GR_GL_GET_PROC(UniformMatrix2fv);
1.164 + GR_GL_GET_PROC(UniformMatrix3fv);
1.165 + GR_GL_GET_PROC(UniformMatrix4fv);
1.166 + GR_GL_GET_PROC(UnmapBuffer);
1.167 + GR_GL_GET_PROC(UseProgram);
1.168 + GR_GL_GET_PROC(VertexAttrib4fv);
1.169 + GR_GL_GET_PROC(VertexAttribPointer);
1.170 + GR_GL_GET_PROC(Viewport);
1.171 +
1.172 + if (glVer >= GR_GL_VER(3,0) || extensions.has("GL_ARB_vertex_array_object")) {
1.173 + // no ARB suffix for GL_ARB_vertex_array_object
1.174 + GR_GL_GET_PROC(BindVertexArray);
1.175 + GR_GL_GET_PROC(DeleteVertexArrays);
1.176 + GR_GL_GET_PROC(GenVertexArrays);
1.177 + }
1.178 +
1.179 + // First look for GL3.0 FBO or GL_ARB_framebuffer_object (same since
1.180 + // GL_ARB_framebuffer_object doesn't use ARB suffix.)
1.181 + if (glVer >= GR_GL_VER(3,0) || extensions.has("GL_ARB_framebuffer_object")) {
1.182 + GR_GL_GET_PROC(GenFramebuffers);
1.183 + GR_GL_GET_PROC(GetFramebufferAttachmentParameteriv);
1.184 + GR_GL_GET_PROC(GetRenderbufferParameteriv);
1.185 + GR_GL_GET_PROC(BindFramebuffer);
1.186 + GR_GL_GET_PROC(FramebufferTexture2D);
1.187 + GR_GL_GET_PROC(CheckFramebufferStatus);
1.188 + GR_GL_GET_PROC(DeleteFramebuffers);
1.189 + GR_GL_GET_PROC(RenderbufferStorage);
1.190 + GR_GL_GET_PROC(GenRenderbuffers);
1.191 + GR_GL_GET_PROC(DeleteRenderbuffers);
1.192 + GR_GL_GET_PROC(FramebufferRenderbuffer);
1.193 + GR_GL_GET_PROC(BindRenderbuffer);
1.194 + GR_GL_GET_PROC(RenderbufferStorageMultisample);
1.195 + GR_GL_GET_PROC(BlitFramebuffer);
1.196 + } else if (extensions.has("GL_EXT_framebuffer_object")) {
1.197 + GR_GL_GET_PROC_SUFFIX(GenFramebuffers, EXT);
1.198 + GR_GL_GET_PROC_SUFFIX(GetFramebufferAttachmentParameteriv, EXT);
1.199 + GR_GL_GET_PROC_SUFFIX(GetRenderbufferParameteriv, EXT);
1.200 + GR_GL_GET_PROC_SUFFIX(BindFramebuffer, EXT);
1.201 + GR_GL_GET_PROC_SUFFIX(FramebufferTexture2D, EXT);
1.202 + GR_GL_GET_PROC_SUFFIX(CheckFramebufferStatus, EXT);
1.203 + GR_GL_GET_PROC_SUFFIX(DeleteFramebuffers, EXT);
1.204 + GR_GL_GET_PROC_SUFFIX(RenderbufferStorage, EXT);
1.205 + GR_GL_GET_PROC_SUFFIX(GenRenderbuffers, EXT);
1.206 + GR_GL_GET_PROC_SUFFIX(DeleteRenderbuffers, EXT);
1.207 + GR_GL_GET_PROC_SUFFIX(FramebufferRenderbuffer, EXT);
1.208 + GR_GL_GET_PROC_SUFFIX(BindRenderbuffer, EXT);
1.209 + if (extensions.has("GL_EXT_framebuffer_multisample")) {
1.210 + GR_GL_GET_PROC_SUFFIX(RenderbufferStorageMultisample, EXT);
1.211 + }
1.212 + if (extensions.has("GL_EXT_framebuffer_blit")) {
1.213 + GR_GL_GET_PROC_SUFFIX(BlitFramebuffer, EXT);
1.214 + }
1.215 + } else {
1.216 + // we must have FBOs
1.217 + delete interface;
1.218 + return NULL;
1.219 + }
1.220 + GR_GL_GET_PROC(BindFragDataLocationIndexed);
1.221 +
1.222 + if (extensions.has("GL_EXT_debug_marker")) {
1.223 + GR_GL_GET_PROC_SUFFIX(InsertEventMarker, EXT);
1.224 + GR_GL_GET_PROC_SUFFIX(PopGroupMarker, EXT);
1.225 + GR_GL_GET_PROC_SUFFIX(PushGroupMarker, EXT);
1.226 + }
1.227 +
1.228 + interface->fStandard = kGL_GrGLStandard;
1.229 + interface->fExtensions.swap(&extensions);
1.230 +
1.231 + return interface;
1.232 + } else {
1.233 + return NULL;
1.234 + }
1.235 +}
