Bring back sRGB-write-control as a caps bit.

include/gpu/GrCaps.h

 
 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #ifndef GrCaps_DEFINED
 #define GrCaps_DEFINED
 
@@ skipping 126 matching lines @@
 
     bool npotTextureTileSupport() const { return fNPOTTextureTileSupport; }
     /** To avoid as-yet-unnecessary complexity we don't allow any partial support of MIP Maps (e.g.
         only for POT textures) */
     bool mipMapSupport() const { return fMipMapSupport; }
 
     /**
      * Skia convention is that a device only has sRGB support if it supports sRGB formats for both
      * textures and framebuffers. In addition:
      *   Decoding to linear of an sRGB texture can be disabled.
-     *   Encoding and gamma-correct blending to an sRGB framebuffer can be disabled.
      */
     bool srgbSupport() const { return fSRGBSupport; }
+    /**
+     * Is there support for enabling/disabling sRGB writes for sRGB-capable color buffers?
+     */
+    bool srgbWriteControl() const { return fSRGBWriteControl; }
     bool twoSidedStencilSupport() const { return fTwoSidedStencilSupport; }
     bool stencilWrapOpsSupport() const { return  fStencilWrapOpsSupport; }
     bool discardRenderTargetSupport() const { return fDiscardRenderTargetSupport; }
     bool gpuTracingSupport() const { return fGpuTracingSupport; }
     bool compressedTexSubImageSupport() const { return fCompressedTexSubImageSupport; }
     bool oversizedStencilSupport() const { return fOversizedStencilSupport; }
     bool textureBarrierSupport() const { return fTextureBarrierSupport; }
     bool sampleLocationsSupport() const { return fSampleLocationsSupport; }
     bool usesMixedSamples() const { return fUsesMixedSamples; }
 
@@ skipping 117 matching lines @@
     /** Subclasses must call this at the end of their constructors in order to apply caps
         overrides requested by the client. Note that overrides will only reduce the caps never
         expand them. */
     void applyOptionsOverrides(const GrContextOptions& options);
 
     SkAutoTUnref<GrShaderCaps>    fShaderCaps;
 
     bool fNPOTTextureTileSupport                     : 1;
     bool fMipMapSupport                              : 1;
     bool fSRGBSupport                                : 1;
+    bool fSRGBWriteControl                           : 1;
     bool fTwoSidedStencilSupport                     : 1;
     bool fStencilWrapOpsSupport                      : 1;
     bool fDiscardRenderTargetSupport                 : 1;
     bool fReuseScratchTextures                       : 1;
     bool fReuseScratchBuffers                        : 1;
     bool fGpuTracingSupport                          : 1;
     bool fCompressedTexSubImageSupport               : 1;
     bool fOversizedStencilSupport                    : 1;
     bool fTextureBarrierSupport                      : 1;
     bool fSampleLocationsSupport                     : 1;
@@ skipping 31 matching lines @@
     virtual void onApplyOptionsOverrides(const GrContextOptions&) {};
 
     bool fSuppressPrints : 1;
     bool fImmediateFlush: 1;
     bool fDrawPathMasksToCompressedTextureSupport : 1;
 
     typedef SkRefCnt INHERITED;
 };
 
 #endif