Revert of removing GrDrawEffect

src/effects/SkAlphaThresholdFilter.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkAlphaThresholdFilter.h"
 #include "SkBitmap.h"
 #include "SkReadBuffer.h"
@@ skipping 100 matching lines @@
     GrCoordTransform fImageCoordTransform;
     GrTextureAccess  fImageTextureAccess;
     GrCoordTransform fMaskCoordTransform;
     GrTextureAccess  fMaskTextureAccess;
 
     typedef GrEffect INHERITED;
 };
 
 class GrGLAlphaThresholdEffect : public GrGLEffect {
 public:
-    GrGLAlphaThresholdEffect(const GrBackendEffectFactory&, const GrEffect&);
+    GrGLAlphaThresholdEffect(const GrBackendEffectFactory&, const GrDrawEffect&);
 
     virtual void emitCode(GrGLProgramBuilder*,
-                          const GrEffect&,
+                          const GrDrawEffect&,
                           const GrEffectKey&,
                           const char* outputColor,
                           const char* inputColor,
                           const TransformedCoordsArray&,
                           const TextureSamplerArray&) SK_OVERRIDE;
 
-    virtual void setData(const GrGLProgramDataManager&, const GrEffect&) SK_OVERRIDE;
+    virtual void setData(const GrGLProgramDataManager&, const GrDrawEffect&) SK_OVERRIDE;
 
 private:
 
     GrGLProgramDataManager::UniformHandle fInnerThresholdVar;
     GrGLProgramDataManager::UniformHandle fOuterThresholdVar;
 
     typedef GrGLEffect INHERITED;
 };
 
-GrGLAlphaThresholdEffect::GrGLAlphaThresholdEffect(const GrBackendEffectFactory& factory,
-                                                   const GrEffect&)
+GrGLAlphaThresholdEffect::GrGLAlphaThresholdEffect(const GrBackendEffectFactory& factory, const GrDrawEffect&)
     : INHERITED(factory) {
 }
 
 void GrGLAlphaThresholdEffect::emitCode(GrGLProgramBuilder* builder,
-                                        const GrEffect&,
+                                        const GrDrawEffect&,
                                         const GrEffectKey& key,
                                         const char* outputColor,
                                         const char* inputColor,
                                         const TransformedCoordsArray& coords,
                                         const TextureSamplerArray& samplers) {
     fInnerThresholdVar = builder->addUniform(
         GrGLProgramBuilder::kFragment_Visibility,
         kFloat_GrSLType, "inner_threshold");
     fOuterThresholdVar = builder->addUniform(
         GrGLProgramBuilder::kFragment_Visibility,
@@ skipping 29 matching lines @@
                           "\t\t\tfloat scale = inner_thresh / max(0.001, color.a);\n"
                           "\t\t\tcolor.rgb *= scale;\n"
                           "\t\t\tcolor.a = inner_thresh;\n"
                           "\t\t}\n");
 
     fsBuilder->codeAppendf("%s = %s;\n", outputColor,
                            (GrGLSLExpr4(inputColor) * GrGLSLExpr4("color")).c_str());
 }
 
 void GrGLAlphaThresholdEffect::setData(const GrGLProgramDataManager& pdman,
-                                       const GrEffect& effect) {
-    const AlphaThresholdEffect& alpha_threshold = effect.cast<AlphaThresholdEffect>();
+                                  const GrDrawEffect& drawEffect) {
+    const AlphaThresholdEffect& alpha_threshold =
+        drawEffect.castEffect<AlphaThresholdEffect>();
     pdman.set1f(fInnerThresholdVar, alpha_threshold.innerThreshold());
     pdman.set1f(fOuterThresholdVar, alpha_threshold.outerThreshold());
 }
 
 /////////////////////////////////////////////////////////////////////
 
 GR_DEFINE_EFFECT_TEST(AlphaThresholdEffect);
 
 GrEffect* AlphaThresholdEffect::TestCreate(SkRandom* random,
                                            GrContext* context,
                                            const GrDrawTargetCaps&,
                                            GrTexture** textures) {
     GrTexture* bmpTex = textures[GrEffectUnitTest::kSkiaPMTextureIdx];
     GrTexture* maskTex = textures[GrEffectUnitTest::kAlphaTextureIdx];
     float inner_thresh = random->nextUScalar1();
     float outer_thresh = random->nextUScalar1();
     return AlphaThresholdEffect::Create(bmpTex, maskTex, inner_thresh, outer_thresh);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 const GrBackendEffectFactory& AlphaThresholdEffect::getFactory() const {
     return GrTBackendEffectFactory<AlphaThresholdEffect>::getInstance();
 }
 
 bool AlphaThresholdEffect::onIsEqual(const GrEffect& sBase) const {
-    const AlphaThresholdEffect& s = sBase.cast<AlphaThresholdEffect>();
+    const AlphaThresholdEffect& s = CastEffect<AlphaThresholdEffect>(sBase);
     return (this->texture(0) == s.texture(0) &&
             this->fInnerThreshold == s.fInnerThreshold &&
             this->fOuterThreshold == s.fOuterThreshold);
 }
 
 void AlphaThresholdEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
     if ((*validFlags & kA_GrColorComponentFlag) && 0xFF == GrColorUnpackA(*color) &&
         GrPixelConfigIsOpaque(this->texture(0)->config())) {
         *validFlags = kA_GrColorComponentFlag;
     } else {
@@ skipping 141 matching lines @@
                                                   (U8CPU)(SkColorGetG(source) * scale),
                                                   (U8CPU)(SkColorGetB(source) * scale));
                 }
             }
             dptr[y * dst->width() + x] = output_color;
         }
     }
 
     return true;
 }