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

src/gpu/effects/GrConstColorProcessor.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 "effects/GrConstColorProcessor.h"
 #include "gl/GrGLFragmentProcessor.h"
 #include "gl/builders/GrGLProgramBuilder.h"
 
 class GLConstColorProcessor : public GrGLFragmentProcessor {
 public:
     GLConstColorProcessor() : fPrevColor(GrColor_ILLEGAL) {}
 
-    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();
         const char* colorUni;
-        fColorUniform = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility,
+        fColorUniform = args.fBuilder->addUniform(GrGLProgramBuilder::kFragment_Visibility,
                                             kVec4f_GrSLType, kMedium_GrSLPrecision, "constantColor",
                                             &colorUni);
-        switch (fp.cast<GrConstColorProcessor>().inputMode()) {
+        switch (args.fFp.cast<GrConstColorProcessor>().inputMode()) {
             case GrConstColorProcessor::kIgnore_InputMode:
-                fsBuilder->codeAppendf("%s = %s;", outputColor, colorUni);
+                fsBuilder->codeAppendf("%s = %s;", args.fOutputColor, colorUni);
                 break;
             case GrConstColorProcessor::kModulateRGBA_InputMode:
-                fsBuilder->codeAppendf("%s = %s * %s;", outputColor, inputColor, colorUni);
+                fsBuilder->codeAppendf("%s = %s * %s;", args.fOutputColor, args.fInputColor,
+                                       colorUni);
                 break;
             case GrConstColorProcessor::kModulateA_InputMode:
-                fsBuilder->codeAppendf("%s = %s.a * %s;", outputColor, inputColor, colorUni);
+                fsBuilder->codeAppendf("%s = %s.a * %s;", args.fOutputColor, args.fInputColor,
+                                       colorUni);
                 break;
         }
     }
 
     void setData(const GrGLProgramDataManager& pdm, const GrProcessor& processor) override {
         GrColor color = processor.cast<GrConstColorProcessor>().color();
         // We use the "illegal" color value as an uninit sentinel. However, ut isn't inherently
         // illegal to use this processor with unpremul colors. So we correctly handle the case
         // when the "illegal" color is used but we will always upload it.
         if (GrColor_ILLEGAL == color || fPrevColor != color) {
@@ skipping 75 matching lines @@
             color = 0;
             break;
         case 2:
             color = d->fRandom->nextULessThan(0x100);
             color = color | (color << 8) | (color << 16) | (color << 24);
             break;
     }
     InputMode mode = static_cast<InputMode>(d->fRandom->nextULessThan(kInputModeCnt));
     return GrConstColorProcessor::Create(color, mode);
 }