Add isSingleComponent bool to getConstantColorComponent

src/gpu/effects/GrDistanceFieldTextureEffect.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 GrDistanceFieldTextureEffect_DEFINED
 #define GrDistanceFieldTextureEffect_DEFINED
 
@@ skipping 40 matching lines @@
     static GrGeometryProcessor* Create(GrTexture* tex, const GrTextureParams& params,
                                        uint32_t flags) {
         return  SkNEW_ARGS(GrDistanceFieldTextureEffect, (tex, params, flags));
     }
 #endif
 
     virtual ~GrDistanceFieldTextureEffect() {}
 
     static const char* Name() { return "DistanceFieldTexture"; }
 
-    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
-
     const GrShaderVar& inTextureCoords() const { return fInTextureCoords; }
 #ifdef SK_GAMMA_APPLY_TO_A8
     float getLuminance() const { return fLuminance; }
 #endif
     uint32_t getFlags() const { return fFlags; }
 
     typedef GrGLDistanceFieldTextureEffect GLProcessor;
 
     virtual const GrBackendGeometryProcessorFactory& getFactory() const SK_OVERRIDE;
 
 private:
     GrDistanceFieldTextureEffect(GrTexture* texture, const GrTextureParams& params,
 #ifdef SK_GAMMA_APPLY_TO_A8
                                  GrTexture* gamma, const GrTextureParams& gammaParams, float lum,
 #endif
                                  uint32_t flags);
 
     virtual bool onIsEqual(const GrProcessor& other) const SK_OVERRIDE;
 
+    virtual void onGetConstantColorComponents(GrColor* color, uint32_t* validFlags,
+                                              bool* isSingleComponent) const SK_OVERRIDE;
+
     GrTextureAccess    fTextureAccess;
 #ifdef SK_GAMMA_APPLY_TO_A8
     GrTextureAccess    fGammaTextureAccess;
     float              fLuminance;
 #endif
     uint32_t           fFlags;
     const GrShaderVar& fInTextureCoords;
 
     GR_DECLARE_GEOMETRY_PROCESSOR_TEST;
 
@@ skipping 13 matching lines @@
                                        SkColor textColor, uint32_t flags) {
         return SkNEW_ARGS(GrDistanceFieldLCDTextureEffect,
                           (tex, params, gamma, gammaParams, textColor, flags));
     }
 
     virtual ~GrDistanceFieldLCDTextureEffect() {}
 
     static const char* Name() { return "DistanceFieldLCDTexture"; }
 
     const GrShaderVar& inTextureCoords() const { return fInTextureCoords; }
-    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
     GrColor getTextColor() const { return fTextColor; }
     uint32_t getFlags() const { return fFlags; }
 
     typedef GrGLDistanceFieldLCDTextureEffect GLProcessor;
 
     virtual const GrBackendGeometryProcessorFactory& getFactory() const SK_OVERRIDE;
 
 private:
     GrDistanceFieldLCDTextureEffect(GrTexture* texture, const GrTextureParams& params,
                                     GrTexture* gamma, const GrTextureParams& gammaParams,
                                     SkColor textColor,
                                     uint32_t flags);
 
     virtual bool onIsEqual(const GrProcessor& other) const SK_OVERRIDE;
 
+    virtual void onGetConstantColorComponents(GrColor* color, uint32_t* validFlags,
+                                              bool* isSingleComponent) const SK_OVERRIDE;
+
     GrTextureAccess    fTextureAccess;
     GrTextureAccess    fGammaTextureAccess;
     GrColor            fTextColor;
     uint32_t           fFlags;
     const GrShaderVar& fInTextureCoords;
 
     GR_DECLARE_GEOMETRY_PROCESSOR_TEST;
 
     typedef GrFragmentProcessor INHERITED;
 };
 
 #endif