Added GrGLFragmentProcessor::EmitArgs struct for use with emitCode()

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 42 matching lines @@
 }
 
 class GLArithmeticFP : public GrGLFragmentProcessor {
 public:
     GLArithmeticFP(const GrProcessor&)
         : fEnforcePMColor(true) {
     }
 
     ~GLArithmeticFP() override {}
 
-    void emitCode(GrGLFPBuilder* builder,
-                  const GrFragmentProcessor& fp,
-                  const char* outputColor,
-                  const char* inputColor,
-                  const TransformedCoordsArray& coords,
-                  const TextureSamplerArray& samplers) override {
-        GrGLFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder();
+    void emitCode(EmitArgs& args) override {
+        GrGLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder();
         fsBuilder->codeAppend("vec4 bgColor = ");
-        fsBuilder->appendTextureLookup(samplers[0], coords[0].c_str(), coords[0].getType());
+        fsBuilder->appendTextureLookup(args.fSamplers[0], args.fCoords[0].c_str(),
+                                       args.fCoords[0].getType());
         fsBuilder->codeAppendf(";");
         const char* dstColor = "bgColor";
 
-        fKUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility,
+        fKUni = args.fBuilder->addUniform(GrGLProgramBuilder::kFragment_Visibility,
                                     kVec4f_GrSLType, kDefault_GrSLPrecision,
                                     "k");
-        const char* kUni = builder->getUniformCStr(fKUni);
+        const char* kUni = args.fBuilder->getUniformCStr(fKUni);
 
-        add_arithmetic_code(fsBuilder, inputColor, dstColor, outputColor, kUni, fEnforcePMColor);
+        add_arithmetic_code(fsBuilder, args.fInputColor, dstColor, args.fOutputColor, kUni,
+                            fEnforcePMColor);
     }
 
     void setData(const GrGLProgramDataManager& 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();
     }
 
     static void GenKey(const GrProcessor& proc, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) {
         const GrArithmeticFP& arith = proc.cast<GrArithmeticFP>();
@@ skipping 214 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