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

src/effects/SkColorMatrixFilter.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkColorMatrixFilter.h"
 #include "SkColorMatrix.h"
 #include "SkColorPriv.h"
@@ skipping 395 matching lines @@
 
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
     class GLProcessor : public GrGLFragmentProcessor {
     public:
         // this class always generates the same code.
         static void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessorKeyBuilder* b) {}
 
         GLProcessor(const GrProcessor&) {}
 
-        virtual void emitCode(GrGLFPBuilder* builder,
-                              const GrFragmentProcessor&,
-                              const char* outputColor,
-                              const char* inputColor,
-                              const TransformedCoordsArray&,
-                              const TextureSamplerArray&) override {
-            fMatrixHandle = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility,
+        virtual void emitCode(EmitArgs& args) override {
+            fMatrixHandle = args.fBuilder->addUniform(GrGLProgramBuilder::kFragment_Visibility,
                                                 kMat44f_GrSLType, kDefault_GrSLPrecision,
                                                 "ColorMatrix");
-            fVectorHandle = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility,
+            fVectorHandle = args.fBuilder->addUniform(GrGLProgramBuilder::kFragment_Visibility,
                                                 kVec4f_GrSLType, kDefault_GrSLPrecision,
                                                 "ColorMatrixVector");
 
-            if (NULL == inputColor) {
+            if (NULL == args.fInputColor) {
                 // could optimize this case, but we aren't for now.
-                inputColor = "vec4(1)";
+                args.fInputColor = "vec4(1)";
             }
-            GrGLFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder();
+            GrGLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder();
             // The max() is to guard against 0 / 0 during unpremul when the incoming color is
             // transparent black.
-            fsBuilder->codeAppendf("\tfloat nonZeroAlpha = max(%s.a, 0.00001);\n", inputColor);
+            fsBuilder->codeAppendf("\tfloat nonZeroAlpha = max(%s.a, 0.00001);\n",
+                                   args.fInputColor);
             fsBuilder->codeAppendf("\t%s = %s * vec4(%s.rgb / nonZeroAlpha, nonZeroAlpha) + %s;\n",
-                                   outputColor,
-                                   builder->getUniformCStr(fMatrixHandle),
-                                   inputColor,
-                                   builder->getUniformCStr(fVectorHandle));
-            fsBuilder->codeAppendf("\t%s = clamp(%s, 0.0, 1.0);\n", outputColor, outputColor);
-            fsBuilder->codeAppendf("\t%s.rgb *= %s.a;\n", outputColor, outputColor);
+                                   args.fOutputColor,
+                                   args.fBuilder->getUniformCStr(fMatrixHandle),
+                                   args.fInputColor,
+                                   args.fBuilder->getUniformCStr(fVectorHandle));
+            fsBuilder->codeAppendf("\t%s = clamp(%s, 0.0, 1.0);\n",
+                                   args.fOutputColor, args.fOutputColor);
+            fsBuilder->codeAppendf("\t%s.rgb *= %s.a;\n", args.fOutputColor, args.fOutputColor);
         }
 
         virtual void setData(const GrGLProgramDataManager& uniManager,
                              const GrProcessor& proc) override {
             const ColorMatrixEffect& cme = proc.cast<ColorMatrixEffect>();
             const float* m = cme.fMatrix.fMat;
             // The GL matrix is transposed from SkColorMatrix.
             GrGLfloat mt[]  = {
                 m[0], m[5], m[10], m[15],
                 m[1], m[6], m[11], m[16],
@@ skipping 109 matching lines @@
     str->append("matrix: (");
     for (int i = 0; i < 20; ++i) {
         str->appendScalar(fMatrix.fMat[i]);
         if (i < 19) {
             str->append(", ");
         }
     }
     str->append(")");
 }
 #endif