Last bit of GrGLSLFragmentProcessor-derived class cleanup

experimental/SkPerlinNoiseShader2/SkPerlinNoiseShader2.cpp

Index: experimental/SkPerlinNoiseShader2/SkPerlinNoiseShader2.cpp
diff --git a/experimental/SkPerlinNoiseShader2/SkPerlinNoiseShader2.cpp b/experimental/SkPerlinNoiseShader2/SkPerlinNoiseShader2.cpp
index 8afbee0827bba8140f5a65d3649a0dbbb068f6b7..233638253c949516dc9e438f8b4424179e098bc0 100644
--- a/experimental/SkPerlinNoiseShader2/SkPerlinNoiseShader2.cpp
+++ b/experimental/SkPerlinNoiseShader2/SkPerlinNoiseShader2.cpp
@@ -609,8 +609,6 @@ void SkPerlinNoiseShader2::PerlinNoiseShaderContext::shadeSpan(
 
 class GrGLPerlinNoise2 : public GrGLSLFragmentProcessor {
 public:
-    GrGLPerlinNoise2(const GrProcessor&);
-
     void emitCode(EmitArgs&) override;
 
     static inline void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessorKeyBuilder* b);
@@ -619,14 +617,9 @@ protected:
     void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override;
 
 private:
-
     GrGLSLProgramDataManager::UniformHandle fStitchDataUni;
-    SkPerlinNoiseShader2::Type              fType;
-    bool                                    fStitchTiles;
-    int                                     fNumOctaves;
     GrGLSLProgramDataManager::UniformHandle fBaseFrequencyUni;
 
-private:
     typedef GrGLSLFragmentProcessor INHERITED;
 };
 
@@ -657,7 +650,7 @@ public:
 
 private:
     GrGLSLFragmentProcessor* onCreateGLSLInstance() const override {
-        return new GrGLPerlinNoise2(*this);
+        return new GrGLPerlinNoise2;
     }
 
     virtual void onGetGLSLProcessorKey(const GrGLSLCaps& caps,
@@ -736,13 +729,9 @@ const GrFragmentProcessor* GrPerlinNoise2Effect::TestCreate(GrProcessorTestData*
                                        kNone_SkFilterQuality);
 }
 
-GrGLPerlinNoise2::GrGLPerlinNoise2(const GrProcessor& processor)
-  : fType(processor.cast<GrPerlinNoise2Effect>().type())
-  , fStitchTiles(processor.cast<GrPerlinNoise2Effect>().stitchTiles())
-  , fNumOctaves(processor.cast<GrPerlinNoise2Effect>().numOctaves()) {
-}
-
 void GrGLPerlinNoise2::emitCode(EmitArgs& args) {
+    const GrPerlinNoise2Effect& pne = args.fFp.cast<GrPerlinNoise2Effect>();
+
     GrGLSLFragmentBuilder* fsBuilder = args.fFragBuilder;
     GrGLSLUniformHandler* uniformHandler = args.fUniformHandler;
     SkString vCoords = fsBuilder->ensureFSCoords2D(args.fCoords, 0);
@@ -753,7 +742,7 @@ void GrGLPerlinNoise2::emitCode(EmitArgs& args) {
     const char* baseFrequencyUni = uniformHandler->getUniformCStr(fBaseFrequencyUni);
 
     const char* stitchDataUni = nullptr;
-    if (fStitchTiles) {
+    if (pne.stitchTiles()) {
         fStitchDataUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
                                                     kVec2f_GrSLType, kDefault_GrSLPrecision,
                                                     "stitchData");
@@ -806,7 +795,7 @@ void GrGLPerlinNoise2::emitCode(EmitArgs& args) {
         noiseSmooth, fractVal, fractVal, fractVal);
 
     // Adjust frequencies if we're stitching tiles
-    if (fStitchTiles) {
+    if (pne.stitchTiles()) {
         noiseCode.appendf("\n\tif(%s.x >= %s.x) { %s.x -= %s.x; }",
             floorVal, stitchData, floorVal, stitchData);
         noiseCode.appendf("\n\tif(%s.y >= %s.y) { %s.y -= %s.y; }",
@@ -915,7 +904,7 @@ void GrGLPerlinNoise2::emitCode(EmitArgs& args) {
     noiseCode.appendf("\n\treturn mix(%s.x, %s.y, %s.y);\n", ab, ab, noiseSmooth);
 
     SkString noiseFuncName;
-    if (fStitchTiles) {
+    if (pne.stitchTiles()) {
         fsBuilder->emitFunction(kFloat_GrSLType,
                                 "perlinnoise", SK_ARRAY_COUNT(gPerlinNoiseStitchArgs),
                                 gPerlinNoiseStitchArgs, noiseCode.c_str(), &noiseFuncName);
@@ -932,7 +921,7 @@ void GrGLPerlinNoise2::emitCode(EmitArgs& args) {
     // Clear the color accumulator
     fsBuilder->codeAppendf("\n\t\t%s = vec4(0.0);", args.fOutputColor);
 
-    if (fStitchTiles) {
+    if (pne.stitchTiles()) {
         // Set up TurbulenceInitial stitch values.
         fsBuilder->codeAppendf("\n\t\tvec2 %s = %s;", stitchData, stitchDataUni);
     }
@@ -940,13 +929,13 @@ void GrGLPerlinNoise2::emitCode(EmitArgs& args) {
     fsBuilder->codeAppendf("\n\t\tfloat %s = 1.0;", ratio);
 
     // Loop over all octaves
-    fsBuilder->codeAppendf("\n\t\tfor (int octave = 0; octave < %d; ++octave) {", fNumOctaves);
+    fsBuilder->codeAppendf("for (int octave = 0; octave < %d; ++octave) {", pne.numOctaves());
 
     fsBuilder->codeAppendf("\n\t\t\t%s += ", args.fOutputColor);
-    if (fType != SkPerlinNoiseShader2::kFractalNoise_Type) {
+    if (pne.type() != SkPerlinNoiseShader2::kFractalNoise_Type) {
         fsBuilder->codeAppend("abs(");
     }
-    if (fStitchTiles) {
+    if (pne.stitchTiles()) {
         fsBuilder->codeAppendf(
             "vec4(\n\t\t\t\t%s(%s, %s, %s),\n\t\t\t\t%s(%s, %s, %s),"
                  "\n\t\t\t\t%s(%s, %s, %s),\n\t\t\t\t%s(%s, %s, %s))",
@@ -963,7 +952,7 @@ void GrGLPerlinNoise2::emitCode(EmitArgs& args) {
             noiseFuncName.c_str(), chanCoordB, noiseVec,
             noiseFuncName.c_str(), chanCoordA, noiseVec);
     }
-    if (fType != SkPerlinNoiseShader2::kFractalNoise_Type) {
+    if (pne.type() != SkPerlinNoiseShader2::kFractalNoise_Type) {
         fsBuilder->codeAppendf(")"); // end of "abs("
     }
     fsBuilder->codeAppendf(" * %s;", ratio);
@@ -971,12 +960,12 @@ void GrGLPerlinNoise2::emitCode(EmitArgs& args) {
     fsBuilder->codeAppendf("\n\t\t\t%s *= vec2(2.0);", noiseVec);
     fsBuilder->codeAppendf("\n\t\t\t%s *= 0.5;", ratio);
 
-    if (fStitchTiles) {
+    if (pne.stitchTiles()) {
         fsBuilder->codeAppendf("\n\t\t\t%s *= vec2(2.0);", stitchData);
     }
     fsBuilder->codeAppend("\n\t\t}"); // end of the for loop on octaves
 
-    if (fType == SkPerlinNoiseShader2::kFractalNoise_Type) {
+    if (pne.type() == SkPerlinNoiseShader2::kFractalNoise_Type) {
         // The value of turbulenceFunctionResult comes from ((turbulenceFunctionResult) + 1) / 2
         // by fractalNoise and (turbulenceFunctionResult) by turbulence.
         fsBuilder->codeAppendf("\n\t\t%s = %s * vec4(0.5) + vec4(0.5);",