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src/effects/gradients/SkTwoPointRadialGradient.cpp

 
 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkTwoPointRadialGradient.h"
 
@@ skipping 379 matching lines @@
     fOneOverTwoA = fA ? SkScalarInvert(fA * 2) : 0;
 
     fPtsToUnit.setTranslate(-fCenter1.fX, -fCenter1.fY);
     fPtsToUnit.postScale(inv, inv);
 }
 
 /////////////////////////////////////////////////////////////////////
 
 #if SK_SUPPORT_GPU
 
-#include "GrTBackendEffectFactory.h"
+#include "GrTBackendProcessorFactory.h"
 #include "gl/builders/GrGLProgramBuilder.h"
 #include "SkGr.h"
 
 // For brevity
 typedef GrGLProgramDataManager::UniformHandle UniformHandle;
 
 class GrGLRadial2Gradient : public GrGLGradientEffect {
 
 public:
 
-    GrGLRadial2Gradient(const GrBackendEffectFactory& factory, const GrEffect&);
+    GrGLRadial2Gradient(const GrBackendProcessorFactory& factory, const GrProcessor&);
     virtual ~GrGLRadial2Gradient() { }
 
     virtual void emitCode(GrGLProgramBuilder*,
-                          const GrEffect&,
-                          const GrEffectKey&,
+                          const GrFragmentProcessor&,
+                          const GrProcessorKey&,
                           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 GrProcessor&) SK_OVERRIDE;
 
-    static void GenKey(const GrEffect&, const GrGLCaps& caps, GrEffectKeyBuilder* b);
+    static void GenKey(const GrProcessor&, const GrGLCaps& caps, GrProcessorKeyBuilder* b);
 
 protected:
 
     UniformHandle fParamUni;
 
     const char* fVSVaryingName;
     const char* fFSVaryingName;
 
     bool fIsDegenerate;
 
     // @{
     /// Values last uploaded as uniforms
 
     SkScalar fCachedCenter;
     SkScalar fCachedRadius;
     bool     fCachedPosRoot;
 
     // @}
 
 private:
 
     typedef GrGLGradientEffect INHERITED;
 
 };
 
 /////////////////////////////////////////////////////////////////////
 
 class GrRadial2Gradient : public GrGradientEffect {
 public:
-    static GrEffect* Create(GrContext* ctx,
-                            const SkTwoPointRadialGradient& shader,
-                            const SkMatrix& matrix,
-                            SkShader::TileMode tm) {
+    static GrFragmentProcessor* Create(GrContext* ctx,
+                                       const SkTwoPointRadialGradient& shader,
+                                       const SkMatrix& matrix,
+                                       SkShader::TileMode tm) {
         return SkNEW_ARGS(GrRadial2Gradient, (ctx, shader, matrix, tm));
     }
 
     virtual ~GrRadial2Gradient() { }
 
     static const char* Name() { return "Two-Point Radial Gradient"; }
-    virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE {
-        return GrTBackendEffectFactory<GrRadial2Gradient>::getInstance();
+    virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE {
+        return GrTBackendFragmentProcessorFactory<GrRadial2Gradient>::getInstance();
     }
 
     // The radial gradient parameters can collapse to a linear (instead of quadratic) equation.
     bool isDegenerate() const { return SK_Scalar1 == fCenterX1; }
     SkScalar center() const { return fCenterX1; }
     SkScalar radius() const { return fRadius0; }
     bool isPosRoot() const { return SkToBool(fPosRoot); }
 
-    typedef GrGLRadial2Gradient GLEffect;
+    typedef GrGLRadial2Gradient GLProcessor;
 
 private:
-    virtual bool onIsEqual(const GrEffect& sBase) const SK_OVERRIDE {
+    virtual bool onIsEqual(const GrProcessor& sBase) const SK_OVERRIDE {
         const GrRadial2Gradient& s = sBase.cast<GrRadial2Gradient>();
         return (INHERITED::onIsEqual(sBase) &&
                 this->fCenterX1 == s.fCenterX1 &&
                 this->fRadius0 == s.fRadius0 &&
                 this->fPosRoot == s.fPosRoot);
     }
 
     GrRadial2Gradient(GrContext* ctx,
                       const SkTwoPointRadialGradient& shader,
                       const SkMatrix& matrix,
                       SkShader::TileMode tm)
         : INHERITED(ctx, shader, matrix, tm)
         , fCenterX1(shader.getCenterX1())
         , fRadius0(shader.getStartRadius())
         , fPosRoot(shader.getDiffRadius() < 0) {
         // We pass the linear part of the quadratic as a varying.
         //    float b = 2.0 * (fCenterX1 * x - fRadius0 * z)
         fBTransform = this->getCoordTransform();
         SkMatrix& bMatrix = *fBTransform.accessMatrix();
         bMatrix[SkMatrix::kMScaleX] = 2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMScaleX]) -
                                            SkScalarMul(fRadius0, bMatrix[SkMatrix::kMPersp0]));
         bMatrix[SkMatrix::kMSkewX] = 2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMSkewX]) -
                                           SkScalarMul(fRadius0, bMatrix[SkMatrix::kMPersp1]));
         bMatrix[SkMatrix::kMTransX] = 2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMTransX]) -
                                            SkScalarMul(fRadius0, bMatrix[SkMatrix::kMPersp2]));
         this->addCoordTransform(&fBTransform);
     }
 
-    GR_DECLARE_EFFECT_TEST;
+    GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
     // @{
     // Cache of values - these can change arbitrarily, EXCEPT
     // we shouldn't change between degenerate and non-degenerate?!
 
     GrCoordTransform fBTransform;
     SkScalar         fCenterX1;
     SkScalar         fRadius0;
     SkBool8          fPosRoot;
 
     // @}
 
     typedef GrGradientEffect INHERITED;
 };
 
 /////////////////////////////////////////////////////////////////////
 
-GR_DEFINE_EFFECT_TEST(GrRadial2Gradient);
+GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrRadial2Gradient);
 
-GrEffect* GrRadial2Gradient::TestCreate(SkRandom* random,
-                                        GrContext* context,
-                                        const GrDrawTargetCaps&,
-                                        GrTexture**) {
+GrFragmentProcessor* GrRadial2Gradient::TestCreate(SkRandom* random,
+                                                   GrContext* context,
+                                                   const GrDrawTargetCaps&,
+                                                   GrTexture**) {
     SkPoint center1 = {random->nextUScalar1(), random->nextUScalar1()};
     SkScalar radius1 = random->nextUScalar1();
     SkPoint center2;
     SkScalar radius2;
     do {
         center2.set(random->nextUScalar1(), random->nextUScalar1());
         radius2 = random->nextUScalar1 ();
         // There is a bug in two point radial gradients with identical radii
     } while (radius1 == radius2);
 
     SkColor colors[kMaxRandomGradientColors];
     SkScalar stopsArray[kMaxRandomGradientColors];
     SkScalar* stops = stopsArray;
     SkShader::TileMode tm;
     int colorCount = RandomGradientParams(random, colors, &stops, &tm);
     SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointRadial(center1, radius1,
                                                                          center2, radius2,
                                                                          colors, stops, colorCount,
                                                                          tm));
     SkPaint paint;
-    GrEffect* effect;
+    GrFragmentProcessor* fp;
     GrColor paintColor;
-    SkAssertResult(shader->asNewEffect(context, paint, NULL, &paintColor, &effect));
-    return effect;
+    SkAssertResult(shader->asFragmentProcessor(context, paint, NULL, &paintColor, &fp));
+    return fp;
 }
 
 /////////////////////////////////////////////////////////////////////
 
-GrGLRadial2Gradient::GrGLRadial2Gradient(const GrBackendEffectFactory& factory,
-                                         const GrEffect& effect)
+GrGLRadial2Gradient::GrGLRadial2Gradient(const GrBackendProcessorFactory& factory,
+                                         const GrProcessor& processor)
     : INHERITED(factory)
     , fVSVaryingName(NULL)
     , fFSVaryingName(NULL)
     , fCachedCenter(SK_ScalarMax)
     , fCachedRadius(-SK_ScalarMax)
     , fCachedPosRoot(0) {
 
-    const GrRadial2Gradient& data = effect.cast<GrRadial2Gradient>();
+    const GrRadial2Gradient& data = processor.cast<GrRadial2Gradient>();
     fIsDegenerate = data.isDegenerate();
 }
 
 void GrGLRadial2Gradient::emitCode(GrGLProgramBuilder* builder,
-                                   const GrEffect& effect,
-                                   const GrEffectKey& key,
+                                   const GrFragmentProcessor&,
+                                   const GrProcessorKey& key,
                                    const char* outputColor,
                                    const char* inputColor,
                                    const TransformedCoordsArray& coords,
                                    const TextureSamplerArray& samplers) {
     uint32_t baseKey = key.get32(0);
     this->emitUniforms(builder, baseKey);
     fParamUni = builder->addUniformArray(GrGLProgramBuilder::kFragment_Visibility,
                                          kFloat_GrSLType, "Radial2FSParams", 6);
 
     SkString cName("c");
@@ skipping 52 matching lines @@
                  rootName.c_str(), p1.c_str());
     } else {
         // t is: -c/b
         t.printf("-%s / %s", cName.c_str(), bVar.c_str());
     }
 
     this->emitColor(builder, t.c_str(), baseKey, outputColor, inputColor, samplers);
 }
 
 void GrGLRadial2Gradient::setData(const GrGLProgramDataManager& pdman,
-                                  const GrEffect& effect) {
-    INHERITED::setData(pdman, effect);
-    const GrRadial2Gradient& data = effect.cast<GrRadial2Gradient>();
+                                  const GrProcessor& processor) {
+    INHERITED::setData(pdman, processor);
+    const GrRadial2Gradient& data = processor.cast<GrRadial2Gradient>();
     SkASSERT(data.isDegenerate() == fIsDegenerate);
     SkScalar centerX1 = data.center();
     SkScalar radius0 = data.radius();
     if (fCachedCenter != centerX1 ||
         fCachedRadius != radius0 ||
         fCachedPosRoot != data.isPosRoot()) {
 
         SkScalar a = SkScalarMul(centerX1, centerX1) - SK_Scalar1;
 
         // When we're in the degenerate (linear) case, the second
@@ skipping 10 matching lines @@
             data.isPosRoot() ? 1.f : -1.f
         };
 
         pdman.set1fv(fParamUni, 6, values);
         fCachedCenter = centerX1;
         fCachedRadius = radius0;
         fCachedPosRoot = data.isPosRoot();
     }
 }
 
-void GrGLRadial2Gradient::GenKey(const GrEffect& effect,
-                                 const GrGLCaps&, GrEffectKeyBuilder* b) {
+void GrGLRadial2Gradient::GenKey(const GrProcessor& processor,
+                                 const GrGLCaps&, GrProcessorKeyBuilder* b) {
     uint32_t* key = b->add32n(2);
-    key[0] = GenBaseGradientKey(effect);
-    key[1] = effect.cast<GrRadial2Gradient>().isDegenerate();
+    key[0] = GenBaseGradientKey(processor);
+    key[1] = processor.cast<GrRadial2Gradient>().isDegenerate();
 }
 
 /////////////////////////////////////////////////////////////////////
 
-bool SkTwoPointRadialGradient::asNewEffect(GrContext* context, const SkPaint& paint,
-                                           const SkMatrix* localMatrix, GrColor* paintColor,
-                                           GrEffect** effect)  const {
+bool SkTwoPointRadialGradient::asFragmentProcessor(GrContext* context, const SkPaint& paint,
+                                                   const SkMatrix* localMatrix, GrColor* paintColor,
+                                                   GrFragmentProcessor** fp)  const {
     SkASSERT(context);
     
     // invert the localM, translate to center1 (fPtsToUni), rotate so center2 is on x axis.
     SkMatrix matrix;
     if (!this->getLocalMatrix().invert(&matrix)) {
         return false;
     }
     if (localMatrix) {
         SkMatrix inv;
         if (!localMatrix->invert(&inv)) {
             return false;
         }
         matrix.postConcat(inv);
     }
     matrix.postConcat(fPtsToUnit);
 
     SkScalar diffLen = fDiff.length();
     if (0 != diffLen) {
         SkScalar invDiffLen = SkScalarInvert(diffLen);
         SkMatrix rot;
         rot.setSinCos(-SkScalarMul(invDiffLen, fDiff.fY),
                        SkScalarMul(invDiffLen, fDiff.fX));
         matrix.postConcat(rot);
     }
 
     *paintColor = SkColor2GrColorJustAlpha(paint.getColor());
-    *effect = GrRadial2Gradient::Create(context, *this, matrix, fTileMode);
+    *fp = GrRadial2Gradient::Create(context, *this, matrix, fTileMode);
     
     return true;
 }
 
 #else
 
-bool SkTwoPointRadialGradient::asNewEffect(GrContext* context, const SkPaint& paint,
-                                           const SkMatrix* localMatrix, GrColor* paintColor,
-                                           GrEffect** effect)  const {
+bool SkTwoPointRadialGradient::asFragmentProcessor(GrContext*, const SkPaint&, const SkMatrix*,
+                                                   GrColor*, GrFragmentProcessor**)  const {
     SkDEBUGFAIL("Should not call in GPU-less build");
     return false;
 }
 
 #endif