Clean up GrGLSLFragmentProcessor-derived classes

src/effects/SkArithmeticMode_gpu.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkArithmeticMode_gpu.h"
 
 #if SK_SUPPORT_GPU
@@ skipping 37 matching lines @@
     if (gUseUnpremul) {
         fragBuilder->codeAppendf("%s.rgb *= %s.a;", outputColor, outputColor);
     } else if (enforcePMColor) {
         fragBuilder->codeAppendf("%s.rgb = min(%s.rgb, %s.a);",
                                  outputColor, outputColor, outputColor);
     }
 }
 
 class GLArithmeticFP : public GrGLSLFragmentProcessor {
 public:
-    GLArithmeticFP(const GrArithmeticFP& arithmeticFP)
-        : fEnforcePMColor(arithmeticFP.enforcePMColor()) {}
+    void emitCode(EmitArgs& args) override {
+        const GrArithmeticFP& arith = args.fFp.cast<GrArithmeticFP>();
 
-    ~GLArithmeticFP() override {}
-
-    void emitCode(EmitArgs& args) override {
         GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder;
         SkString dstColor("dstColor");
         this->emitChild(0, nullptr, &dstColor, args);
 
         fKUni = args.fUniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
                                                  kVec4f_GrSLType, kDefault_GrSLPrecision,
                                                  "k");
         const char* kUni = args.fUniformHandler->getUniformCStr(fKUni);
 
         add_arithmetic_code(fragBuilder,
                             args.fInputColor,
                             dstColor.c_str(),
                             args.fOutputColor,
                             kUni,
-                            fEnforcePMColor);
+                            arith.enforcePMColor());
     }
 
     static void GenKey(const GrProcessor& proc, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) {
         const GrArithmeticFP& arith = proc.cast<GrArithmeticFP>();
         uint32_t key = arith.enforcePMColor() ? 1 : 0;
         b->add32(key);
     }
 
 protected:
     void onSetData(const GrGLSLProgramDataManager& pdman, const GrProcessor& proc) override {
         const GrArithmeticFP& arith = proc.cast<GrArithmeticFP>();
         pdman.set4f(fKUni, arith.k1(), arith.k2(), arith.k3(), arith.k4());
-        fEnforcePMColor = arith.enforcePMColor();
     }
 
 private:
     GrGLSLProgramDataManager::UniformHandle fKUni;
-    bool fEnforcePMColor;
 
     typedef GrGLSLFragmentProcessor INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 GrArithmeticFP::GrArithmeticFP(float k1, float k2, float k3, float k4, bool enforcePMColor,
                                const GrFragmentProcessor* dst)
   : fK1(k1), fK2(k2), fK3(k3), fK4(k4), fEnforcePMColor(enforcePMColor) {
     this->initClassID<GrArithmeticFP>();
 
     SkASSERT(dst);
     SkDEBUGCODE(int dstIndex = )this->registerChildProcessor(dst);
     SkASSERT(0 == dstIndex);
 }
 
 void GrArithmeticFP::onGetGLSLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) const {
     GLArithmeticFP::GenKey(*this, caps, b);
 }
 
 GrGLSLFragmentProcessor* GrArithmeticFP::onCreateGLSLInstance() const {
-    return new GLArithmeticFP(*this);
+    return new GLArithmeticFP;
 }
 
 bool GrArithmeticFP::onIsEqual(const GrFragmentProcessor& fpBase) const {
     const GrArithmeticFP& fp = fpBase.cast<GrArithmeticFP>();
     return fK1 == fp.fK1 &&
            fK2 == fp.fK2 &&
            fK3 == fp.fK3 &&
            fK4 == fp.fK4 &&
            fEnforcePMColor == fp.fEnforcePMColor;
 }
@@ skipping 174 matching lines @@
     float k1 = d->fRandom->nextF();
     float k2 = d->fRandom->nextF();
     float k3 = d->fRandom->nextF();
     float k4 = d->fRandom->nextF();
     bool enforcePMColor = d->fRandom->nextBool();
 
     return GrArithmeticXPFactory::Create(k1, k2, k3, k4, enforcePMColor);
 }
 
 #endif