Revert of removing equality / compute invariant loops from GrGeometryProcessors

src/gpu/effects/GrBitmapTextGeoProc.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 GrBitmapTextGeoProc_DEFINED
 #define GrBitmapTextGeoProc_DEFINED
 
 #include "GrProcessor.h"
 #include "GrGeometryProcessor.h"
 
 class GrGLBitmapTextGeoProc;
 class GrInvariantOutput;
 
 /**
  * The output color of this effect is a modulation of the input color and a sample from a texture.
  * It allows explicit specification of the filtering and wrap modes (GrTextureParams). The input
  * coords are a custom attribute.
  */
 class GrBitmapTextGeoProc : public GrGeometryProcessor {
 public:
     static GrGeometryProcessor* Create(GrColor color, GrTexture* tex, const GrTextureParams& p,
-                                       GrMaskFormat format,
+                                       GrMaskFormat format, bool opaqueVertexColors,
                                        const SkMatrix& localMatrix) {
-        return SkNEW_ARGS(GrBitmapTextGeoProc, (color, tex, p, format, localMatrix));
+        return SkNEW_ARGS(GrBitmapTextGeoProc, (color, tex, p, format, opaqueVertexColors,
+                                                localMatrix));
     }
 
     virtual ~GrBitmapTextGeoProc() {}
 
     const char* name() const override { return "Texture"; }
 
     const Attribute* inPosition() const { return fInPosition; }
     const Attribute* inColor() const { return fInColor; }
     const Attribute* inTextureCoords() const { return fInTextureCoords; }
     GrMaskFormat maskFormat() const { return fMaskFormat; }
 
     virtual void getGLProcessorKey(const GrBatchTracker& bt,
                                    const GrGLCaps& caps,
                                    GrProcessorKeyBuilder* b) const override;
 
     virtual GrGLPrimitiveProcessor* createGLInstance(const GrBatchTracker& bt,
                                                      const GrGLCaps& caps) const override;
 
     void initBatchTracker(GrBatchTracker*, const GrPipelineInfo&) const override;
+    bool onCanMakeEqual(const GrBatchTracker&,
+                        const GrGeometryProcessor&,
+                        const GrBatchTracker&) const override;
 
 private:
     GrBitmapTextGeoProc(GrColor, GrTexture* texture, const GrTextureParams& params,
-                        GrMaskFormat format, const SkMatrix& localMatrix);
+                        GrMaskFormat format, bool opaqueVertexColors, const SkMatrix& localMatrix);
+
+    bool onIsEqual(const GrGeometryProcessor& other) const override;
+
+    void onGetInvariantOutputColor(GrInitInvariantOutput*) const override;
+
+    void onGetInvariantOutputCoverage(GrInitInvariantOutput*) const override;
 
     GrTextureAccess  fTextureAccess;
     const Attribute* fInPosition;
     const Attribute* fInColor;
     const Attribute* fInTextureCoords;
     GrMaskFormat     fMaskFormat;
 
     GR_DECLARE_GEOMETRY_PROCESSOR_TEST;
 
     typedef GrGeometryProcessor INHERITED;
 };
 
 #endif