Replace fWillReadFragmentPosition with a bitfield

src/gpu/effects/GrOvalEffect.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 "GrOvalEffect.h"
 
 #include "GrFragmentProcessor.h"
@@ skipping 47 matching lines @@
 
 void CircleEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const {
     inout->mulByUnknownSingleComponent();
 }
 
 CircleEffect::CircleEffect(GrPrimitiveEdgeType edgeType, const SkPoint& c, SkScalar r)
     : fCenter(c)
     , fRadius(r)
     , fEdgeType(edgeType) {
     this->initClassID<CircleEffect>();
-    this->setWillReadFragmentPosition();
+    this->enableBuiltInState(kFragmentPosition_BuiltInState);
 }
 
 bool CircleEffect::onIsEqual(const GrFragmentProcessor& other) const {
     const CircleEffect& ce = other.cast<CircleEffect>();
     return fEdgeType == ce.fEdgeType && fCenter == ce.fCenter && fRadius == ce.fRadius;
 }
 
 //////////////////////////////////////////////////////////////////////////////
 
 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(CircleEffect);
@@ skipping 146 matching lines @@
 
 void EllipseEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const {
     inout->mulByUnknownSingleComponent();
 }
 
 EllipseEffect::EllipseEffect(GrPrimitiveEdgeType edgeType, const SkPoint& c, SkScalar rx, SkScalar ry)
     : fCenter(c)
     , fRadii(SkVector::Make(rx, ry))
     , fEdgeType(edgeType) {
     this->initClassID<EllipseEffect>();
-    this->setWillReadFragmentPosition();
+    this->enableBuiltInState(kFragmentPosition_BuiltInState);
 }
 
 bool EllipseEffect::onIsEqual(const GrFragmentProcessor& other) const {
     const EllipseEffect& ee = other.cast<EllipseEffect>();
     return fEdgeType == ee.fEdgeType && fCenter == ee.fCenter && fRadii == ee.fRadii;
 }
 
 //////////////////////////////////////////////////////////////////////////////
 
 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(EllipseEffect);
@@ skipping 155 matching lines @@
         w /= 2;
         return CircleEffect::Create(edgeType, SkPoint::Make(oval.fLeft + w, oval.fTop + w), w);
     } else {
         w /= 2;
         h /= 2;
         return EllipseEffect::Create(edgeType, SkPoint::Make(oval.fLeft + w, oval.fTop + h), w, h);
     }
 
     return nullptr;
 }