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

src/effects/SkMorphologyImageFilter.cpp

 /*
  * Copyright 2012 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkMorphologyImageFilter.h"
 #include "SkBitmap.h"
 #include "SkColorPriv.h"
@@ skipping 330 matching lines @@
 
     typedef Gr1DKernelEffect INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 class GrGLMorphologyEffect : public GrGLFragmentProcessor {
 public:
     GrGLMorphologyEffect(const GrProcessor&);
 
-    virtual void emitCode(GrGLFPBuilder*,
-                          const GrFragmentProcessor&,
-                          const char* outputColor,
-                          const char* inputColor,
-                          const TransformedCoordsArray&,
-                          const TextureSamplerArray&) override;
+    virtual void emitCode(EmitArgs&) override;
 
     static inline void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessorKeyBuilder* b);
 
     void setData(const GrGLProgramDataManager&, const GrProcessor&) override;
 
 private:
     int width() const { return GrMorphologyEffect::WidthFromRadius(fRadius); }
 
     int                                   fRadius;
     Gr1DKernelEffect::Direction           fDirection;
     bool                                  fUseRange;
     GrMorphologyEffect::MorphologyType    fType;
     GrGLProgramDataManager::UniformHandle fPixelSizeUni;
     GrGLProgramDataManager::UniformHandle fRangeUni;
 
     typedef GrGLFragmentProcessor INHERITED;
 };
 
 GrGLMorphologyEffect::GrGLMorphologyEffect(const GrProcessor& proc) {
     const GrMorphologyEffect& m = proc.cast<GrMorphologyEffect>();
     fRadius = m.radius();
     fDirection = m.direction();
     fUseRange = m.useRange();
     fType = m.type();
 }
 
-void GrGLMorphologyEffect::emitCode(GrGLFPBuilder* builder,
-                                    const GrFragmentProcessor&,
-                                    const char* outputColor,
-                                    const char* inputColor,
-                                    const TransformedCoordsArray& coords,
-                                    const TextureSamplerArray& samplers) {
-    fPixelSizeUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility,
+void GrGLMorphologyEffect::emitCode(EmitArgs& args) {
+    fPixelSizeUni = args.fBuilder->addUniform(GrGLProgramBuilder::kFragment_Visibility,
                                             kFloat_GrSLType, kDefault_GrSLPrecision,
                                             "PixelSize");
-    const char* pixelSizeInc = builder->getUniformCStr(fPixelSizeUni);
-    fRangeUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility,
+    const char* pixelSizeInc = args.fBuilder->getUniformCStr(fPixelSizeUni);
+    fRangeUni = args.fBuilder->addUniform(GrGLProgramBuilder::kFragment_Visibility,
                                             kVec2f_GrSLType, kDefault_GrSLPrecision,
                                             "Range");
-    const char* range = builder->getUniformCStr(fRangeUni);
+    const char* range = args.fBuilder->getUniformCStr(fRangeUni);
 
-    GrGLFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder();
-    SkString coords2D = fsBuilder->ensureFSCoords2D(coords, 0);
+    GrGLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder();
+    SkString coords2D = fsBuilder->ensureFSCoords2D(args.fCoords, 0);
     const char* func;
     switch (fType) {
         case GrMorphologyEffect::kErode_MorphologyType:
-            fsBuilder->codeAppendf("\t\t%s = vec4(1, 1, 1, 1);\n", outputColor);
+            fsBuilder->codeAppendf("\t\t%s = vec4(1, 1, 1, 1);\n", args.fOutputColor);
             func = "min";
             break;
         case GrMorphologyEffect::kDilate_MorphologyType:
-            fsBuilder->codeAppendf("\t\t%s = vec4(0, 0, 0, 0);\n", outputColor);
+            fsBuilder->codeAppendf("\t\t%s = vec4(0, 0, 0, 0);\n", args.fOutputColor);
             func = "max";
             break;
         default:
             SkFAIL("Unexpected type");
             func = ""; // suppress warning
             break;
     }
 
     const char* dir;
     switch (fDirection) {
@@ skipping 13 matching lines @@
     // coord.x -= radius * pixelSize;
     fsBuilder->codeAppendf("\t\tcoord.%s -= %d.0 * %s; \n", dir, fRadius, pixelSizeInc);
     if (fUseRange) {
         // highBound = min(highBound, coord.x + (width-1) * pixelSize);
         fsBuilder->codeAppendf("\t\tfloat highBound = min(%s.y, coord.%s + %f * %s);",
                                range, dir, float(width() - 1), pixelSizeInc);
         // coord.x = max(lowBound, coord.x);
         fsBuilder->codeAppendf("\t\tcoord.%s = max(%s.x, coord.%s);", dir, range, dir);
     }
     fsBuilder->codeAppendf("\t\tfor (int i = 0; i < %d; i++) {\n", width());
-    fsBuilder->codeAppendf("\t\t\t%s = %s(%s, ", outputColor, func, outputColor);
-    fsBuilder->appendTextureLookup(samplers[0], "coord");
+    fsBuilder->codeAppendf("\t\t\t%s = %s(%s, ", args.fOutputColor, func, args.fOutputColor);
+    fsBuilder->appendTextureLookup(args.fSamplers[0], "coord");
     fsBuilder->codeAppend(");\n");
     // coord.x += pixelSize;
     fsBuilder->codeAppendf("\t\t\tcoord.%s += %s;\n", dir, pixelSizeInc);
     if (fUseRange) {
         // coord.x = min(highBound, coord.x);
         fsBuilder->codeAppendf("\t\t\tcoord.%s = min(highBound, coord.%s);", dir, dir);
     }
     fsBuilder->codeAppend("\t\t}\n");
     SkString modulate;
-    GrGLSLMulVarBy4f(&modulate, outputColor, inputColor);
+    GrGLSLMulVarBy4f(&modulate, args.fOutputColor, args.fInputColor);
     fsBuilder->codeAppend(modulate.c_str());
 }
 
 void GrGLMorphologyEffect::GenKey(const GrProcessor& proc,
                                   const GrGLSLCaps&, GrProcessorKeyBuilder* b) {
     const GrMorphologyEffect& m = proc.cast<GrMorphologyEffect>();
     uint32_t key = static_cast<uint32_t>(m.radius());
     key |= (m.type() << 8);
     key |= (m.direction() << 9);
     if (m.useRange()) key |= 1 << 10;
@@ skipping 304 matching lines @@
                                          SkBitmap* result, SkIPoint* offset) const {
     return this->filterImageGPUGeneric(true, proxy, src, ctx, result, offset);
 }
 
 bool SkErodeImageFilter::filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context& ctx,
                                         SkBitmap* result, SkIPoint* offset) const {
     return this->filterImageGPUGeneric(false, proxy, src, ctx, result, offset);
 }
 
 #endif