Replace op== with CombineIfPossible in GrDrawState.

src/gpu/effects/GrBicubicEffect.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrBicubicEffect.h"
 
 #include "gl/GrGLShaderBuilder.h"
@@ skipping 146 matching lines @@
 GrBicubicEffect::~GrBicubicEffect() {
 }
 
 const GrBackendEffectFactory& GrBicubicEffect::getFactory() const {
     return GrTBackendEffectFactory<GrBicubicEffect>::getInstance();
 }
 
 bool GrBicubicEffect::onIsEqual(const GrEffect& sBase) const {
     const GrBicubicEffect& s = CastEffect<GrBicubicEffect>(sBase);
     return this->textureAccess(0) == s.textureAccess(0) &&
-           !memcmp(fCoefficients, s.coefficients(), 16);
+           !memcmp(fCoefficients, s.coefficients(), 16) &&
+           fDomain == s.fDomain;
 }
 
 void GrBicubicEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
     // FIXME: Perhaps we can do better.
     *validFlags = 0;
     return;
 }
 
 GR_DEFINE_EFFECT_TEST(GrBicubicEffect);
 
@@ skipping 35 matching lines @@
             // Use bilerp to handle rotation or fractional translation.
             *filterMode = GrTextureParams::kBilerp_FilterMode;
         }
         return false;
     }
     // When we use the bicubic filtering effect each sample is read from the texture using
     // nearest neighbor sampling.
     *filterMode = GrTextureParams::kNone_FilterMode;
     return true;
 }