added support for PLS path rendering

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 63 matching lines @@
         return fFloatPrecisions[shaderType][precision];
     };
 
     /**
     * Is there any difference between the float shader variable precision types? If this is true
     * then unless the shader type is not supported, any call to getFloatShaderPrecisionInfo() would
     * report the same info for all precisions in all shader types.
     */
     bool floatPrecisionVaries() const { return fShaderPrecisionVaries; }
 
+    int pixelLocalStorageSize() const { return fPixelLocalStorageSize; }

[bsalomon, 2016/01/13 19:15:33]

Maybe a comment that if > 0 then PLS is supported and the returned value
indicates the number of bytes of storage available?

+
 protected:
     /** Subclasses must call this after initialization 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);
 
     bool fShaderDerivativeSupport : 1;
     bool fGeometryShaderSupport : 1;
     bool fPathRenderingSupport : 1;
     bool fDstReadInShaderSupport : 1;
     bool fDualSourceBlendingSupport : 1;
 
     bool fShaderPrecisionVaries;
     PrecisionInfo fFloatPrecisions[kGrShaderTypeCount][kGrSLPrecisionCount];
+    int fPixelLocalStorageSize;
 
 private:
     virtual void onApplyOptionsOverrides(const GrContextOptions&) {};
     typedef SkRefCnt INHERITED;
 };
 
 /**
  * Represents the capabilities of a GrContext.
  */
 class GrCaps : public SkRefCnt {
@@ skipping 156 matching lines @@
     virtual void onApplyOptionsOverrides(const GrContextOptions&) {};
 
     bool fSuppressPrints : 1;
     bool fImmediateFlush: 1;
     bool fDrawPathMasksToCompressedTextureSupport : 1;
 
     typedef SkRefCnt INHERITED;
 };
 
 #endif