Add more specialized fragment builders

src/gpu/GrDefaultGeoProcFactory.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 "GrDefaultGeoProcFactory.h"
 
 #include "GrInvariantOutput.h"
@@ skipping 47 matching lines @@
     bool hasVertexCoverage() const { return SkToBool(fInCoverage); }
 
     class GLSLProcessor : public GrGLSLGeometryProcessor {
     public:
         GLSLProcessor()
             : fViewMatrix(SkMatrix::InvalidMatrix()), fColor(GrColor_ILLEGAL), fCoverage(0xff) {}
 
         void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) override {
             const DefaultGeoProc& gp = args.fGP.cast<DefaultGeoProc>();
             GrGLSLVertexBuilder* vertBuilder = args.fVertBuilder;
-            GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder;
+            GrGLSLPPFragmentBuilder* fragBuilder = args.fFragBuilder;
             GrGLSLVaryingHandler* varyingHandler = args.fVaryingHandler;
             GrGLSLUniformHandler* uniformHandler = args.fUniformHandler;
 
             // emit attributes
             varyingHandler->emitAttributes(gp);
 
             // Setup pass through color
             if (!gp.colorIgnored()) {
                 if (gp.hasVertexColor()) {
                     varyingHandler->addPassThroughAttribute(gp.inColor(), args.fOutputColor);
@@ skipping 255 matching lines @@
         }
 
         if (localCoords.hasLocalMatrix()) {
             invert.preConcat(*localCoords.fMatrix);
         }
     }
 
     LocalCoords inverted(LocalCoords::kUsePosition_Type, &invert);
     return Create(color, coverage, inverted, SkMatrix::I());
 }