sRGB support for distance field text.

src/gpu/batches/GrAtlasTextBatch.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrAtlasTextBatch_DEFINED
 #define GrAtlasTextBatch_DEFINED
 
@@ skipping 40 matching lines @@
         batch->fGeoCount = 1;
         batch->fFilteredColor = 0;
         batch->fFontCache = fontCache;
         batch->fUseBGR = false;
         return batch;
     }
 
     static GrAtlasTextBatch* CreateDistanceField(
                                               int glyphCount, GrBatchFontCache* fontCache,
                                               const GrDistanceFieldAdjustTable* distanceAdjustTable,
+                                              bool useSRGBDistanceTable,
                                               SkColor filteredColor, bool isLCD,
                                               bool useBGR) {
         GrAtlasTextBatch* batch = new GrAtlasTextBatch;
 
         batch->fFontCache = fontCache;
         batch->fMaskType = isLCD ? kLCDDistanceField_MaskType : kGrayscaleDistanceField_MaskType;
         batch->fDistanceAdjustTable.reset(SkRef(distanceAdjustTable));
+        batch->fUseSRGBDistanceTable = useSRGBDistanceTable;
         batch->fFilteredColor = filteredColor;
         batch->fUseBGR = useBGR;
         batch->fBatch.fNumGlyphs = glyphCount;
         batch->fGeoCount = 1;
         return batch;
     }
 
     // to avoid even the initial copy of the struct, we have a getter for the first item which
     // is used to seed the batch with its initial geometry.  After seeding, the client should call
     // init() so the Batch can initialize itself
@@ skipping 97 matching lines @@
         kGrayscaleDistanceField_MaskType,
         kLCDDistanceField_MaskType,
     } fMaskType;
     bool fUseBGR; // fold this into the enum?
 
     GrBatchFontCache* fFontCache;
 
     // Distance field properties
     SkAutoTUnref<const GrDistanceFieldAdjustTable> fDistanceAdjustTable;
     SkColor fFilteredColor;
+    bool fUseSRGBDistanceTable;
 
     friend class GrBlobRegenHelper; // Needs to trigger flushes
 
     typedef GrVertexBatch INHERITED;
 };
 
 /*
  * A simple helper class to abstract the interface GrAtlasTextBlob needs to regenerate itself.
  * It'd be nicer if this was nested, but we need to forward declare it in GrAtlasTextBlob.h
  */
@@ skipping 12 matching lines @@
         fFlushInfo->fGlyphsToFlush += glyphCount;
     }
 
 private:
     const GrAtlasTextBatch* fBatch;
     GrVertexBatch::Target* fTarget;
     GrAtlasTextBatch::FlushInfo* fFlushInfo;
 };
 
 #endif