Add isSingleComponent bool to getConstantColorComponent

src/effects/SkBlurMaskFilter.cpp

 
 /*
  * Copyright 2006 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 "SkBlurMaskFilter.h"
 #include "SkBlurMask.h"
@@ skipping 545 matching lines @@
 
 class GrRectBlurEffect : public GrFragmentProcessor {
 public:
     virtual ~GrRectBlurEffect();
 
     static const char* Name() { return "RectBlur"; }
 
     typedef GrGLRectBlurEffect GLProcessor;
 
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE;
-    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
-
     /**
      * Create a simple filter effect with custom bicubic coefficients.
      */
     static GrFragmentProcessor* Create(GrContext *context, const SkRect& rect, float sigma) {
         GrTexture *blurProfileTexture = NULL;
         int doubleProfileSize = SkScalarCeilToInt(12*sigma);
 
         if (doubleProfileSize >= rect.width() || doubleProfileSize >= rect.height()) {
             // if the blur sigma is too large so the gaussian overlaps the whole
             // rect in either direction, fall back to CPU path for now.
 
             return NULL;
         }
 
         bool createdBlurProfileTexture = CreateBlurProfileTexture(context, sigma, &blurProfileTexture);
         SkAutoTUnref<GrTexture> hunref(blurProfileTexture);
         if (!createdBlurProfileTexture) {
            return NULL;
         }
         return SkNEW_ARGS(GrRectBlurEffect, (rect, sigma, blurProfileTexture));
     }
 
     const SkRect& getRect() const { return fRect; }
     float getSigma() const { return fSigma; }
 
 private:
     GrRectBlurEffect(const SkRect& rect, float sigma, GrTexture *blur_profile);
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE;
 
+    virtual void onGetConstantColorComponents(GrColor* color, uint32_t* validFlags,
+                                              bool* isSingleComponent) const SK_OVERRIDE;
+
     static bool CreateBlurProfileTexture(GrContext *context, float sigma,
                                        GrTexture **blurProfileTexture);
 
     SkRect          fRect;
     float           fSigma;
     GrTextureAccess fBlurProfileAccess;
 
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
     typedef GrFragmentProcessor INHERITED;
@@ skipping 151 matching lines @@
 
 const GrBackendFragmentProcessorFactory& GrRectBlurEffect::getFactory() const {
     return GrTBackendFragmentProcessorFactory<GrRectBlurEffect>::getInstance();
 }
 
 bool GrRectBlurEffect::onIsEqual(const GrProcessor& sBase) const {
     const GrRectBlurEffect& s = sBase.cast<GrRectBlurEffect>();
     return this->getSigma() == s.getSigma() && this->getRect() == s.getRect();
 }
 
-void GrRectBlurEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
+void GrRectBlurEffect::onGetConstantColorComponents(GrColor* color, uint32_t* validFlags,
+                                                    bool* isSingleComponent) const {
     *validFlags = 0;
-    return;
 }
 
 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrRectBlurEffect);
 
 GrFragmentProcessor* GrRectBlurEffect::TestCreate(SkRandom* random,
                                                   GrContext* context,
                                                   const GrDrawTargetCaps&,
                                                   GrTexture**) {
     float sigma = random->nextRangeF(3,8);
     float width = random->nextRangeF(200,300);
@@ skipping 49 matching lines @@
     static GrFragmentProcessor* Create(GrContext* context, float sigma, const SkRRect&);
 
     virtual ~GrRRectBlurEffect() {};
     static const char* Name() { return "GrRRectBlur"; }
 
     const SkRRect& getRRect() const { return fRRect; }
     float getSigma() const { return fSigma; }
 
     typedef GrGLRRectBlurEffect GLProcessor;
 
-    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
-
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE;
 
 private:
     GrRRectBlurEffect(float sigma, const SkRRect&, GrTexture* profileTexture);
 
     virtual bool onIsEqual(const GrProcessor& other) const SK_OVERRIDE;
 
+    virtual void onGetConstantColorComponents(GrColor* color, uint32_t* validFlags,
+                                              bool* isSingleComponent) const SK_OVERRIDE;
+
     SkRRect             fRRect;
     float               fSigma;
     GrTextureAccess     fNinePatchAccess;
 
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
     typedef GrFragmentProcessor INHERITED;
 };
 
 
@@ skipping 63 matching lines @@
     }
 
     SkAutoTUnref<GrTexture> blurunref(blurNinePatchTexture);
     if (NULL == blurNinePatchTexture) {
         return NULL;
     }
 
     return SkNEW_ARGS(GrRRectBlurEffect, (sigma, rrect, blurNinePatchTexture));
 }
 
-void GrRRectBlurEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
+void GrRRectBlurEffect::onGetConstantColorComponents(GrColor* color, uint32_t* validFlags,
+                                                     bool* isSingleComponent) const {
     *validFlags = 0;
 }
 
 const GrBackendFragmentProcessorFactory& GrRRectBlurEffect::getFactory() const {
     return GrTBackendFragmentProcessorFactory<GrRRectBlurEffect>::getInstance();
 }
 
 GrRRectBlurEffect::GrRRectBlurEffect(float sigma, const SkRRect& rrect, GrTexture *ninePatchTexture)
     : fRRect(rrect),
       fSigma(sigma),
@@ skipping 276 matching lines @@
     } else {
         str->append("None");
     }
     str->append("))");
 }
 #endif
 
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkBlurMaskFilter)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkBlurMaskFilterImpl)
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END