Add sRGB texture support.

src/gpu/gl/GrGLCaps.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrGLCaps.h"
 
@@ skipping 460 matching lines @@
         // configs that are color-renderable and can be passed to glRenderBufferStorageMultisample.
         // Chromium may have an extension to allow BGRA renderbuffers to work on desktop platforms.
         if (ctxInfo.hasExtension("GL_CHROMIUM_renderbuffer_format_BGRA8888")) {
             fConfigRenderSupport[kBGRA_8888_GrPixelConfig][kYes_MSAA] = true;
         } else {
             fConfigRenderSupport[kBGRA_8888_GrPixelConfig][kYes_MSAA] =
                 !fBGRAIsInternalFormat || !this->usesMSAARenderBuffers();
         }
     }
 
+    if (this->fRGBA8RenderbufferSupport && this->isConfigTexturable(kSRGBA_8888_GrPixelConfig)) {
+        if (kGL_GrGLStandard == standard) {
+            if (ctxInfo.version() >= GR_GL_VER(3,0) ||
+                ctxInfo.hasExtension("GL_ARB_framebuffer_sRGB") ||
+                ctxInfo.hasExtension("GL_EXT_framebuffer_sRGB")) {
+                fConfigRenderSupport[kSRGBA_8888_GrPixelConfig][kNo_MSAA] = true;
+                fConfigRenderSupport[kSRGBA_8888_GrPixelConfig][kYes_MSAA] = true;
+            }
+        } else {
+            if (ctxInfo.version() >= GR_GL_VER(3,0) ||
+                ctxInfo.hasExtension("GL_EXT_sRGB")) {
+                fConfigRenderSupport[kSRGBA_8888_GrPixelConfig][kNo_MSAA] = true;
+                fConfigRenderSupport[kSRGBA_8888_GrPixelConfig][kYes_MSAA] = true;
+            }
+        }
+    }
+    
     if (this->isConfigTexturable(kRGBA_float_GrPixelConfig)) {
         if (kGL_GrGLStandard == standard) {
             fConfigRenderSupport[kRGBA_float_GrPixelConfig][kNo_MSAA] = true;
             fConfigRenderSupport[kRGBA_float_GrPixelConfig][kYes_MSAA] = true;
         } else {
             if (ctxInfo.hasExtension("GL_EXT_color_buffer_float")) {
                 fConfigRenderSupport[kRGBA_float_GrPixelConfig][kNo_MSAA] = true;
             } else {
                 fConfigRenderSupport[kRGBA_float_GrPixelConfig][kNo_MSAA] = false;
             }
@@ skipping 62 matching lines @@
         if (ctxInfo.hasExtension("GL_APPLE_texture_format_BGRA8888")) {
             fConfigTextureSupport[kBGRA_8888_GrPixelConfig] = true;
         } else if (ctxInfo.hasExtension("GL_EXT_texture_format_BGRA8888")) {
             fConfigTextureSupport[kBGRA_8888_GrPixelConfig] = true;
             fBGRAIsInternalFormat = true;
         }
         SkASSERT(fConfigTextureSupport[kBGRA_8888_GrPixelConfig] ||
                  kSkia8888_GrPixelConfig != kBGRA_8888_GrPixelConfig);
     }
 
+    // Check for sRGBA
+    if (kGL_GrGLStandard == standard) {
+        fConfigTextureSupport[kSRGBA_8888_GrPixelConfig] =
+            (version >= GR_GL_VER(3,0) || ctxInfo.hasExtension("GL_EXT_texture_sRGB"));
+    } else {
+        fConfigTextureSupport[kSRGBA_8888_GrPixelConfig] =
+            (version >= GR_GL_VER(3,0) || ctxInfo.hasExtension("GL_EXT_sRGB"));
+    }
+    
     // Compressed texture support
 
     // glCompressedTexImage2D is available on all OpenGL ES devices...
     // however, it is only available on standard OpenGL after version 1.3
     bool hasCompressTex2D = (kGL_GrGLStandard != standard || version >= GR_GL_VER(1, 3));
 
     fCompressedTexSubImageSupport =
         hasCompressTex2D && (gli->fFunctions.fCompressedTexSubImage2D);
 
     // Check for ETC1
@@ skipping 428 matching lines @@
     r.appendf("Two Format Limit: %s\n", (fTwoFormatLimit ? "YES": "NO"));
     r.appendf("Fragment coord conventions support: %s\n",
              (fFragCoordsConventionSupport ? "YES": "NO"));
     r.appendf("Vertex array object support: %s\n", (fVertexArrayObjectSupport ? "YES": "NO"));
     r.appendf("Use non-VBO for dynamic data: %s\n",
              (fUseNonVBOVertexAndIndexDynamicData ? "YES" : "NO"));
     r.appendf("Full screen clear is free: %s\n", (fFullClearIsFree ? "YES" : "NO"));
     r.appendf("Drops tile on zero divide: %s\n", (fDropsTileOnZeroDivide ? "YES" : "NO"));
     return r;
 }