Allow LCD text to batch across colorchanges. This will always use

src/gpu/effects/GrDistanceFieldGeoProc.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 GrDistanceFieldGeoProc_DEFINED
 #define GrDistanceFieldGeoProc_DEFINED
 
@@ skipping 17 matching lines @@
     
     kUniformScale_DistanceFieldEffectMask = kSimilarity_DistanceFieldEffectFlag |
                                             kRectToRect_DistanceFieldEffectFlag,
     // The subset of the flags relevant to GrDistanceFieldA8TextGeoProc
     kNonLCD_DistanceFieldEffectMask       = kSimilarity_DistanceFieldEffectFlag |
                                             kColorAttr_DistanceFieldEffectFlag,
     // The subset of the flags relevant to GrDistanceFieldLCDTextGeoProc
     kLCD_DistanceFieldEffectMask          = kSimilarity_DistanceFieldEffectFlag |
                                             kRectToRect_DistanceFieldEffectFlag |
                                             kUseLCD_DistanceFieldEffectFlag |
-                                            kBGR_DistanceFieldEffectFlag,
+                                            kBGR_DistanceFieldEffectFlag |
+                                            kColorAttr_DistanceFieldEffectFlag,
 };
 
 /**
  * The output color of this effect is a modulation of the input color and a sample from a
  * distance field texture (using a smoothed step function near 0.5).
  * It allows explicit specification of the filtering and wrap modes (GrTextureParams). The input
  * coords are a custom attribute. Gamma correction is handled via a texture LUT.
  */
 class GrDistanceFieldA8TextGeoProc : public GrGeometryProcessor {
 public:
@@ skipping 141 matching lines @@
                                        bool usesLocalCoords) {
         return new GrDistanceFieldLCDTextGeoProc(color, viewMatrix, tex, params, distanceAdjust,
                                                  flags, usesLocalCoords);
     }
 
     virtual ~GrDistanceFieldLCDTextGeoProc() {}
 
     const char* name() const override { return "DistanceFieldLCDTexture"; }
 
     const Attribute* inPosition() const { return fInPosition; }
+    const Attribute* inColor() const { return fInColor; }
     const Attribute* inTextureCoords() const { return fInTextureCoords; }
     DistanceAdjust getDistanceAdjust() const { return fDistanceAdjust; }
     GrColor color() const { return fColor; }
     bool colorIgnored() const { return GrColor_ILLEGAL == fColor; }
+    bool hasVertexColor() const { return SkToBool(fInColor); }
     const SkMatrix& viewMatrix() const { return fViewMatrix; }
     uint32_t getFlags() const { return fFlags; }
     bool usesLocalCoords() const { return fUsesLocalCoords; }
 
     void getGLSLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) const override;
 
     GrGLSLPrimitiveProcessor* createGLSLInstance(const GrGLSLCaps&) const override;
 
 private:
     GrDistanceFieldLCDTextGeoProc(GrColor, const SkMatrix& viewMatrix,
                                   GrTexture* texture, const GrTextureParams& params,
                                   DistanceAdjust wa, uint32_t flags,
                                   bool usesLocalCoords);
 
     GrColor          fColor;
     SkMatrix         fViewMatrix;
     GrTextureAccess  fTextureAccess;
     DistanceAdjust   fDistanceAdjust;
     uint32_t         fFlags;
     const Attribute* fInPosition;
+    const Attribute* fInColor;
     const Attribute* fInTextureCoords;
     bool             fUsesLocalCoords;
 
     GR_DECLARE_GEOMETRY_PROCESSOR_TEST;
 
     typedef GrGeometryProcessor INHERITED;
 };
 
 #endif