Add more specialized fragment builders

src/gpu/effects/GrYUVEffect.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 "GrYUVEffect.h"
 
 #include "GrCoordTransform.h"
@@ skipping 81 matching lines @@
     const char* name() const override { return "YUV to RGB"; }
 
     SkYUVColorSpace getColorSpace() const { return fColorSpace; }
 
     class GLSLProcessor : public GrGLSLFragmentProcessor {
     public:
         // this class always generates the same code.
         static void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessorKeyBuilder*) {}
 
         void emitCode(EmitArgs& args) override {
-            GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder;
+            GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
 
             const char* colorSpaceMatrix = nullptr;
             fMatrixUni = args.fUniformHandler->addUniform(kFragment_GrShaderFlag,
                                                           kMat44f_GrSLType, kDefault_GrSLPrecision,
                                                           "ColorSpaceMatrix", &colorSpaceMatrix);
             fragBuilder->codeAppendf("%s = vec4(", args.fOutputColor);
             fragBuilder->appendTextureLookup(args.fSamplers[0], args.fCoords[0].c_str(),
                                              args.fCoords[0].getType());
             fragBuilder->codeAppend(".r,");
             fragBuilder->appendTextureLookup(args.fSamplers[1], args.fCoords[1].c_str(),
@@ skipping 105 matching lines @@
 
     SkYUVColorSpace getColorSpace() const { return fColorSpace; }
 
     OutputChannels outputChannels() const { return fOutputChannels; }
 
     class GLSLProcessor : public GrGLSLFragmentProcessor {
     public:
         GLSLProcessor() : fLastColorSpace(-1), fLastOutputChannels(-1) {}
 
         void emitCode(EmitArgs& args) override {
-            GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder;
+            GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
             OutputChannels oc = args.fFp.cast<RGBToYUVEffect>().outputChannels();
 
             SkString outputColor("rgbColor");
             this->emitChild(0, args.fInputColor, &outputColor, args);
 
             const char* uniName;
             switch (oc) {
                 case kYUV_OutputChannels:
                     fRGBToYUVUni = args.fUniformHandler->addUniformArray(
                         kFragment_GrShaderFlag,
@@ skipping 140 matching lines @@
 GrYUVEffect::CreateRGBToU(const GrFragmentProcessor* rgbFP, SkYUVColorSpace colorSpace) {
     SkASSERT(rgbFP);
     return new RGBToYUVEffect(rgbFP, colorSpace, RGBToYUVEffect::kU_OutputChannels);
 }
 
 const GrFragmentProcessor*
 GrYUVEffect::CreateRGBToV(const GrFragmentProcessor* rgbFP, SkYUVColorSpace colorSpace) {
     SkASSERT(rgbFP);
     return new RGBToYUVEffect(rgbFP, colorSpace, RGBToYUVEffect::kV_OutputChannels);
 }