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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 314 matching lines @@
 }
 
 bool SkColorMatrixFilter::asColorMatrix(SkScalar matrix[20]) const {
     if (matrix) {
         memcpy(matrix, fMatrix.fMat, 20 * sizeof(SkScalar));
     }
     return true;
 }
 
 #if SK_SUPPORT_GPU
-#include "GrEffect.h"
-#include "GrTBackendEffectFactory.h"
-#include "gl/GrGLEffect.h"
+#include "GrProcessor.h"
+#include "GrTBackendProcessorFactory.h"
+#include "gl/GrGLProcessor.h"
 #include "gl/builders/GrGLProgramBuilder.h"
 
-class ColorMatrixEffect : public GrEffect {
+class ColorMatrixEffect : public GrFragmentProcessor {
 public:
-    static GrEffect* Create(const SkColorMatrix& matrix) {
+    static GrFragmentProcessor* Create(const SkColorMatrix& matrix) {
         return SkNEW_ARGS(ColorMatrixEffect, (matrix));
     }
 
     static const char* Name() { return "Color Matrix"; }
 
-    virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE {
-        return GrTBackendEffectFactory<ColorMatrixEffect>::getInstance();
+    virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE {
+        return GrTBackendFragmentProcessorFactory<ColorMatrixEffect>::getInstance();
     }
 
     virtual void getConstantColorComponents(GrColor* color,
                                             uint32_t* validFlags) const SK_OVERRIDE {
         // We only bother to check whether the alpha channel will be constant. If SkColorMatrix had
         // type flags it might be worth checking the other components.
 
         // The matrix is defined such the 4th row determines the output alpha. The first four
         // columns of that row multiply the input r, g, b, and a, respectively, and the last column
         // is the "translation".
@@ skipping 27 matching lines @@
         }
         outputA += fMatrix.fMat[kAlphaRowTranslateIdx];
         *validFlags = kA_GrColorComponentFlag;
         // We pin the color to [0,1]. This would happen to the *final* color output from the frag
         // shader but currently the effect does not pin its own output. So in the case of over/
         // underflow this may deviate from the actual result. Maybe the effect should pin its
         // result if the matrix could over/underflow for any component?
         *color = static_cast<uint8_t>(SkScalarPin(outputA, 0, 255)) << GrColor_SHIFT_A;
     }
 
-    GR_DECLARE_EFFECT_TEST;
+    GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
-    class GLEffect : public GrGLEffect {
+    class GLProcessor : public GrGLFragmentProcessor {
     public:
         // this class always generates the same code.
-        static void GenKey(const GrEffect&, const GrGLCaps&, GrEffectKeyBuilder* b) {}
+        static void GenKey(const GrProcessor&, const GrGLCaps&, GrProcessorKeyBuilder* b) {}
 
-        GLEffect(const GrBackendEffectFactory& factory,
-                 const GrEffect&)
+        GLProcessor(const GrBackendProcessorFactory& factory,
+                 const GrProcessor&)
         : INHERITED(factory) {
         }
 
         virtual void emitCode(GrGLProgramBuilder* builder,
-                              const GrEffect&,
-                              const GrEffectKey&,
+                              const GrFragmentProcessor&,
+                              const GrProcessorKey&,
                               const char* outputColor,
                               const char* inputColor,
                               const TransformedCoordsArray&,
                               const TextureSamplerArray&) SK_OVERRIDE {
             fMatrixHandle = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility,
                                                 kMat44f_GrSLType,
                                                 "ColorMatrix");
             fVectorHandle = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility,
                                                 kVec4f_GrSLType,
                                                 "ColorMatrixVector");
 
             if (NULL == inputColor) {
                 // could optimize this case, but we aren't for now.
                 inputColor = "vec4(1)";
             }
             GrGLFragmentShaderBuilder* fsBuilder = builder->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("\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);
         }
 
         virtual void setData(const GrGLProgramDataManager& uniManager,
-                             const GrEffect& effect) SK_OVERRIDE {
-            const ColorMatrixEffect& cme = effect.cast<ColorMatrixEffect>();
+                             const GrProcessor& proc) SK_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],
                 m[2], m[7], m[12], m[17],
                 m[3], m[8], m[13], m[18],
             };
             static const float kScale = 1.0f / 255.0f;
             GrGLfloat vec[] = {
                 m[4] * kScale, m[9] * kScale, m[14] * kScale, m[19] * kScale,
             };
             uniManager.setMatrix4fv(fMatrixHandle, 1, mt);
             uniManager.set4fv(fVectorHandle, 1, vec);
         }
 
     private:
         GrGLProgramDataManager::UniformHandle fMatrixHandle;
         GrGLProgramDataManager::UniformHandle fVectorHandle;
 
-        typedef GrGLEffect INHERITED;
+        typedef GrGLFragmentProcessor INHERITED;
     };
 
 private:
     ColorMatrixEffect(const SkColorMatrix& matrix) : fMatrix(matrix) {}
 
-    virtual bool onIsEqual(const GrEffect& s) const {
+    virtual bool onIsEqual(const GrProcessor& s) const {
         const ColorMatrixEffect& cme = s.cast<ColorMatrixEffect>();
         return cme.fMatrix == fMatrix;
     }
 
     SkColorMatrix fMatrix;
 
-    typedef GrEffect INHERITED;
+    typedef GrFragmentProcessor INHERITED;
 };
 
-GR_DEFINE_EFFECT_TEST(ColorMatrixEffect);
+GR_DEFINE_FRAGMENT_PROCESSOR_TEST(ColorMatrixEffect);
 
-GrEffect* ColorMatrixEffect::TestCreate(SkRandom* random,
-                                        GrContext*,
-                                        const GrDrawTargetCaps&,
-                                        GrTexture* dummyTextures[2]) {
+GrFragmentProcessor* ColorMatrixEffect::TestCreate(SkRandom* random,
+                                                   GrContext*,
+                                                   const GrDrawTargetCaps&,
+                                                   GrTexture* dummyTextures[2]) {
     SkColorMatrix colorMatrix;
     for (size_t i = 0; i < SK_ARRAY_COUNT(colorMatrix.fMat); ++i) {
         colorMatrix.fMat[i] = random->nextSScalar1();
     }
     return ColorMatrixEffect::Create(colorMatrix);
 }
 
-GrEffect* SkColorMatrixFilter::asNewEffect(GrContext*) const {
+GrFragmentProcessor* SkColorMatrixFilter::asFragmentProcessor(GrContext*) const {
     return ColorMatrixEffect::Create(fMatrix);
 }
 
 #endif
 
 #ifndef SK_IGNORE_TO_STRING
 void SkColorMatrixFilter::toString(SkString* str) const {
     str->append("SkColorMatrixFilter: ");
 
     str->append("matrix: (");
     for (int i = 0; i < 20; ++i) {
         str->appendScalar(fMatrix.fMat[i]);
         if (i < 19) {
             str->append(", ");
         }
     }
     str->append(")");
 }
 #endif