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

src/effects/SkTableColorFilter.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 "SkBitmap.h"
 #include "SkTableColorFilter.h"
 #include "SkColorPriv.h"
@@ skipping 361 matching lines @@
     GrTextureStripAtlas*    fAtlas;
     int                     fRow;
 
     typedef GrFragmentProcessor INHERITED;
 };
 
 class GLColorTableEffect : public GrGLFragmentProcessor {
 public:
     GLColorTableEffect(const GrProcessor&);
 
-    virtual void emitCode(GrGLFPBuilder*,
-                          const GrFragmentProcessor&,
-                          const char* outputColor,
-                          const char* inputColor,
-                          const TransformedCoordsArray&,
-                          const TextureSamplerArray&) override;
+    virtual void emitCode(EmitArgs&) override;
 
     void setData(const GrGLProgramDataManager&, const GrProcessor&) override;
 
     static void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessorKeyBuilder* b) {}
 
 private:
     UniformHandle fRGBAYValuesUni;
     typedef GrGLFragmentProcessor INHERITED;
 };
 
@@ skipping 12 matching lines @@
         rgbaYValues[2] = rgbaYValues[1] + yDelta;
     } else {
         rgbaYValues[3] = 0.125;
         rgbaYValues[0] = 0.375;
         rgbaYValues[1] = 0.625;
         rgbaYValues[2] = 0.875;
     }
     pdm.set4fv(fRGBAYValuesUni, 1, rgbaYValues);
 }
 
-void GLColorTableEffect::emitCode(GrGLFPBuilder* builder,
-                                  const GrFragmentProcessor&,
-                                  const char* outputColor,
-                                  const char* inputColor,
-                                  const TransformedCoordsArray&,
-                                  const TextureSamplerArray& samplers) {
+void GLColorTableEffect::emitCode(EmitArgs& args) {
     const char* yoffsets;
-    fRGBAYValuesUni = builder->addUniform(GrGLFPBuilder::kFragment_Visibility,
+    fRGBAYValuesUni = args.fBuilder->addUniform(GrGLFPBuilder::kFragment_Visibility,
                                           kVec4f_GrSLType, kDefault_GrSLPrecision,
                                           "yoffsets", &yoffsets);
     static const float kColorScaleFactor = 255.0f / 256.0f;
     static const float kColorOffsetFactor = 1.0f / 512.0f;
-    GrGLFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder();
-    if (NULL == inputColor) {
+    GrGLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder();
+    if (NULL == args.fInputColor) {
         // the input color is solid white (all ones).
         static const float kMaxValue = kColorScaleFactor + kColorOffsetFactor;
         fsBuilder->codeAppendf("\t\tvec4 coord = vec4(%f, %f, %f, %f);\n",
                                kMaxValue, kMaxValue, kMaxValue, kMaxValue);
 
     } else {
-        fsBuilder->codeAppendf("\t\tfloat nonZeroAlpha = max(%s.a, .0001);\n", inputColor);
-        fsBuilder->codeAppendf("\t\tvec4 coord = vec4(%s.rgb / nonZeroAlpha, nonZeroAlpha);\n", inputColor);
+        fsBuilder->codeAppendf("\t\tfloat nonZeroAlpha = max(%s.a, .0001);\n", args.fInputColor);
+        fsBuilder->codeAppendf("\t\tvec4 coord = vec4(%s.rgb / nonZeroAlpha, nonZeroAlpha);\n",
+                               args.fInputColor);
         fsBuilder->codeAppendf("\t\tcoord = coord * %f + vec4(%f, %f, %f, %f);\n",
                               kColorScaleFactor,
                               kColorOffsetFactor, kColorOffsetFactor,
                               kColorOffsetFactor, kColorOffsetFactor);
     }
 
     SkString coord;
 
-    fsBuilder->codeAppendf("\t\t%s.a = ", outputColor);
+    fsBuilder->codeAppendf("\t\t%s.a = ", args.fOutputColor);
     coord.printf("vec2(coord.a, %s.a)", yoffsets);
-    fsBuilder->appendTextureLookup(samplers[0], coord.c_str());
+    fsBuilder->appendTextureLookup(args.fSamplers[0], coord.c_str());
     fsBuilder->codeAppend(";\n");
 
-    fsBuilder->codeAppendf("\t\t%s.r = ", outputColor);
+    fsBuilder->codeAppendf("\t\t%s.r = ", args.fOutputColor);
     coord.printf("vec2(coord.r, %s.r)", yoffsets);
-    fsBuilder->appendTextureLookup(samplers[0], coord.c_str());
+    fsBuilder->appendTextureLookup(args.fSamplers[0], coord.c_str());
     fsBuilder->codeAppend(";\n");
 
-    fsBuilder->codeAppendf("\t\t%s.g = ", outputColor);
+    fsBuilder->codeAppendf("\t\t%s.g = ", args.fOutputColor);
     coord.printf("vec2(coord.g, %s.g)", yoffsets);
-    fsBuilder->appendTextureLookup(samplers[0], coord.c_str());
+    fsBuilder->appendTextureLookup(args.fSamplers[0], coord.c_str());
     fsBuilder->codeAppend(";\n");
 
-    fsBuilder->codeAppendf("\t\t%s.b = ", outputColor);
+    fsBuilder->codeAppendf("\t\t%s.b = ", args.fOutputColor);
     coord.printf("vec2(coord.b, %s.b)", yoffsets);
-    fsBuilder->appendTextureLookup(samplers[0], coord.c_str());
+    fsBuilder->appendTextureLookup(args.fSamplers[0], coord.c_str());
     fsBuilder->codeAppend(";\n");
 
-    fsBuilder->codeAppendf("\t\t%s.rgb *= %s.a;\n", outputColor, outputColor);
+    fsBuilder->codeAppendf("\t\t%s.rgb *= %s.a;\n", args.fOutputColor, args.fOutputColor);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 GrFragmentProcessor* ColorTableEffect::Create(GrContext* context, SkBitmap bitmap, unsigned flags) {
 
     GrTextureStripAtlas::Desc desc;
     desc.fWidth  = bitmap.width();
     desc.fHeight = 128;
     desc.fRowHeight = bitmap.height();
     desc.fContext = context;
@@ skipping 140 matching lines @@
 SkColorFilter* SkTableColorFilter::CreateARGB(const uint8_t tableA[256],
                                               const uint8_t tableR[256],
                                               const uint8_t tableG[256],
                                               const uint8_t tableB[256]) {
     return SkNEW_ARGS(SkTable_ColorFilter, (tableA, tableR, tableG, tableB));
 }
 
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkTableColorFilter)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkTable_ColorFilter)
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END