Auto-compare GrProcessors' texture accesses in isEqual().

src/effects/SkLightingImageFilter.cpp

 /*
  * Copyright 2012 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkLightingImageFilter.h"
 #include "SkBitmap.h"
 #include "SkColorPriv.h"
@@ skipping 1286 matching lines @@
         this->setWillReadFragmentPosition();
     }
 }
 
 GrLightingEffect::~GrLightingEffect() {
     fLight->unref();
 }
 
 bool GrLightingEffect::onIsEqual(const GrFragmentProcessor& sBase) const {
     const GrLightingEffect& s = sBase.cast<GrLightingEffect>();
-    return this->texture(0) == s.texture(0) &&
-           fLight->isEqual(*s.fLight) &&
+    return fLight->isEqual(*s.fLight) &&
            fSurfaceScale == s.fSurfaceScale;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 GrDiffuseLightingEffect::GrDiffuseLightingEffect(GrTexture* texture,
                                                  const SkLight* light,
                                                  SkScalar surfaceScale,
                                                  const SkMatrix& matrix,
                                                  SkScalar kd)
@@ skipping 399 matching lines @@
 
     fsBuilder->codeAppendf("%s(%s)", fLightColorFunc.c_str(), surfaceToLight);
 }
 
 #endif
 
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkLightingImageFilter)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDiffuseLightingImageFilter)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSpecularLightingImageFilter)
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END