diff --git a/include/gpu/GrProcessor.h b/include/gpu/GrProcessor.h
index b309d2d..7053872 100644
--- a/include/gpu/GrProcessor.h
+++ b/include/gpu/GrProcessor.h
@@ -37,49 +37,14 @@
 
     virtual ~GrProcessor();
 
-    struct InvariantOutput{
-        GrColor fColor;
-        uint32_t fValidFlags;
-        bool fIsSingleComponent;
-
-        bool isOpaque() const {
-            return ((fValidFlags & kA_GrColorComponentFlag) && 0xFF == GrColorUnpackA(fColor));
-        }
-
-        bool isSolidWhite() const {
-            return (fValidFlags == kRGBA_GrColorComponentFlags &&
-                    0xFFFFFFFF == GrColorUnpackA(fColor));
-        }
-
-        /**
-         * If isSingleComponent is true, then the flag values for r, g, b, and a must all be the
-         * same. If the flags are all set then all color components must be equal.
-         */
-        SkDEBUGCODE(void validate() const;)
-
-    private:
-        SkDEBUGCODE(bool colorComponentsAllEqual() const;)
-
-        /**
-         * If alpha is valid, check that any valid R,G,B values are <= A
-         */
-        SkDEBUGCODE(bool validPreMulColor() const;)
-    };
-
     /**
-     * This function is used to perform optimizations. When called the invarientOuput param
+     * This function is used to perform optimizations. When called the color and validFlags params
      * indicate whether the input components to this effect in the FS will have known values.
-     * In inout the validFlags member is a bitfield of GrColorComponentFlags. The isSingleComponent
-     * member indicates whether the input will be 1 or 4 bytes. The function updates the members of
-     * inout to indicate known values of its output. A component of the color member only has
-     * meaning if the corresponding bit in validFlags is set.
+     * validFlags is a bitfield of GrColorComponentFlags. The function updates both params to
+     * indicate known values of its output. A component of the color param only has meaning if the
+     * corresponding bit in validFlags is set.
      */
-    void computeInvariantOutput(InvariantOutput* inout) const {
-        this->onComputeInvariantOutput(inout);
-#ifdef SK_DEBUG
-        inout->validate();
-#endif
-    }
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const = 0;
 
     /** This object, besides creating back-end-specific helper objects, is used for run-time-type-
         identification. The factory should be an instance of templated class,
@@ -193,10 +158,6 @@
         getFactory()).*/
     virtual bool onIsEqual(const GrProcessor& other) const = 0;
 
-    /** 
-     * Subclass implements this to support getConstantColorComponents(...).
-     */
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const = 0;
     friend class GrGeometryProcessor; // to set fRequiresVertexShader and build fVertexAttribTypes.
 
     SkSTArray<4, const GrCoordTransform*, true>  fCoordTransforms;
diff --git a/src/core/SkXfermode.cpp b/src/core/SkXfermode.cpp
index 1d151e4..8a3218f 100644
--- a/src/core/SkXfermode.cpp
+++ b/src/core/SkXfermode.cpp
@@ -799,6 +799,11 @@
         }
     }
 
+    virtual void getConstantColorComponents(GrColor* color,
+                                            uint32_t* validFlags) const SK_OVERRIDE {
+        *validFlags = 0;
+    }
+
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE {
         return GrTBackendFragmentProcessorFactory<XferEffect>::getInstance();
     }
@@ -1211,11 +1216,6 @@
         return fMode == s.fMode &&
                fBackgroundAccess.getTexture() == s.fBackgroundAccess.getTexture();
     }
-    
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE {
-        inout->fValidFlags = 0;
-        inout->fIsSingleComponent = false;
-    }
 
     SkXfermode::Mode fMode;
     GrCoordTransform fBackgroundTransform;
diff --git a/src/effects/SkAlphaThresholdFilter.cpp b/src/effects/SkAlphaThresholdFilter.cpp
index 462cfec..09cc618 100644
--- a/src/effects/SkAlphaThresholdFilter.cpp
+++ b/src/effects/SkAlphaThresholdFilter.cpp
@@ -76,6 +76,8 @@
     static const char* Name() { return "Alpha Threshold"; }
 
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE;
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+
     float innerThreshold() const { return fInnerThreshold; }
     float outerThreshold() const { return fOuterThreshold; }
 
@@ -102,8 +104,6 @@
 
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
     float fInnerThreshold;
@@ -228,13 +228,13 @@
             this->fOuterThreshold == s.fOuterThreshold);
 }
 
-void AlphaThresholdEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
-    if (inout->isOpaque() && GrPixelConfigIsOpaque(this->texture(0)->config())) {
-        inout->fValidFlags = kA_GrColorComponentFlag;
+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 {
-        inout->fValidFlags = 0;
+        *validFlags = 0;
     }
-    inout->fIsSingleComponent = false;
 }
 
 #endif
diff --git a/src/effects/SkArithmeticMode.cpp b/src/effects/SkArithmeticMode.cpp
index b62b33d..85af19c 100644
--- a/src/effects/SkArithmeticMode.cpp
+++ b/src/effects/SkArithmeticMode.cpp
@@ -289,6 +289,8 @@
     static const char* Name() { return "Arithmetic"; }
     GrTexture* backgroundTexture() const { return fBackgroundAccess.getTexture(); }
 
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+
     float k1() const { return fK1; }
     float k2() const { return fK2; }
     float k3() const { return fK3; }
@@ -298,8 +300,6 @@
 private:
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     GrArithmeticEffect(float k1, float k2, float k3, float k4, bool enforcePMColor,
                        GrTexture* background);
     float                       fK1, fK2, fK3, fK4;
@@ -344,10 +344,9 @@
     return GrTBackendFragmentProcessorFactory<GrArithmeticEffect>::getInstance();
 }
 
-void GrArithmeticEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
+void GrArithmeticEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
     // TODO: optimize this
-    inout->fValidFlags = 0;
-    inout->fIsSingleComponent = false;
+    *validFlags = 0;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
diff --git a/src/effects/SkBlurMaskFilter.cpp b/src/effects/SkBlurMaskFilter.cpp
index 251398c..123b9d2 100644
--- a/src/effects/SkBlurMaskFilter.cpp
+++ b/src/effects/SkBlurMaskFilter.cpp
@@ -563,6 +563,8 @@
     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.
      */
@@ -592,8 +594,6 @@
     GrRectBlurEffect(const SkRect& rect, float sigma, GrTexture *blur_profile);
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     static bool CreateBlurProfileTexture(GrContext *context, float sigma,
                                        GrTexture **blurProfileTexture);
 
@@ -765,9 +765,9 @@
     return this->getSigma() == s.getSigma() && this->getRect() == s.getRect();
 }
 
-void GrRectBlurEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
-    inout->fValidFlags = 0;
-    inout->fIsSingleComponent = false;
+void GrRectBlurEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
+    *validFlags = 0;
+    return;
 }
 
 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrRectBlurEffect);
@@ -837,6 +837,8 @@
 
     typedef GrGLRRectBlurEffect GLProcessor;
 
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE;
 
 private:
@@ -844,8 +846,6 @@
 
     virtual bool onIsEqual(const GrProcessor& other) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     SkRRect             fRRect;
     float               fSigma;
     GrTextureAccess     fNinePatchAccess;
@@ -929,9 +929,8 @@
     return SkNEW_ARGS(GrRRectBlurEffect, (sigma, rrect, blurNinePatchTexture));
 }
 
-void GrRRectBlurEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
-    inout->fValidFlags = 0;
-    inout->fIsSingleComponent = false;
+void GrRRectBlurEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
+    *validFlags = 0;
 }
 
 const GrBackendFragmentProcessorFactory& GrRRectBlurEffect::getFactory() const {
diff --git a/src/effects/SkColorFilters.cpp b/src/effects/SkColorFilters.cpp
index ba62817..bd0d2aa 100644
--- a/src/effects/SkColorFilters.cpp
+++ b/src/effects/SkColorFilters.cpp
@@ -195,6 +195,8 @@
         return SkNEW_ARGS(ModeColorFilterEffect, (c, mode));
     }
 
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+
     bool willUseFilterColor() const {
         SkXfermode::Coeff dstCoeff;
         SkXfermode::Coeff srcCoeff;
@@ -291,8 +293,6 @@
         return fMode == s.fMode && fColor == s.fColor;
     }
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     SkXfermode::Mode fMode;
     GrColor fColor;
 
@@ -382,19 +382,18 @@
 
 }
 
-void ModeColorFilterEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
+void ModeColorFilterEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
     float inputColor[4];
-    GrColorToRGBAFloat(inout->fColor, inputColor);
+    GrColorToRGBAFloat(*color, inputColor);
     float filterColor[4];
     GrColorToRGBAFloat(fColor, filterColor);
     MaskedColorExpr result =
         color_filter_expression(fMode,
                                 MaskedColorExpr(filterColor, kRGBA_GrColorComponentFlags),
-                                MaskedColorExpr(inputColor, inout->fValidFlags));
+                                MaskedColorExpr(inputColor, *validFlags));
 
-    inout->fColor = result.getColor();
-    inout->fValidFlags = result.getValidComponents();
-    inout->fIsSingleComponent = false;
+    *color = result.getColor();
+    *validFlags = result.getValidComponents();
 }
 
 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(ModeColorFilterEffect);
diff --git a/src/effects/SkColorMatrixFilter.cpp b/src/effects/SkColorMatrixFilter.cpp
index 8549fd7..5ac4552 100644
--- a/src/effects/SkColorMatrixFilter.cpp
+++ b/src/effects/SkColorMatrixFilter.cpp
@@ -349,6 +349,51 @@
         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".
+        static const uint32_t kRGBAFlags[] = {
+            kR_GrColorComponentFlag,
+            kG_GrColorComponentFlag,
+            kB_GrColorComponentFlag,
+            kA_GrColorComponentFlag
+        };
+        static const int kShifts[] = {
+            GrColor_SHIFT_R, GrColor_SHIFT_G, GrColor_SHIFT_B, GrColor_SHIFT_A,
+        };
+        enum {
+            kAlphaRowStartIdx = 15,
+            kAlphaRowTranslateIdx = 19,
+        };
+
+        SkScalar outputA = 0;
+        for (int i = 0; i < 4; ++i) {
+            // If any relevant component of the color to be passed through the matrix is non-const
+            // then we can't know the final result.
+            if (0 != fMatrix.fMat[kAlphaRowStartIdx + i]) {
+                if (!(*validFlags & kRGBAFlags[i])) {
+                    *validFlags = 0;
+                    return;
+                } else {
+                    uint32_t component = (*color >> kShifts[i]) & 0xFF;
+                    outputA += fMatrix.fMat[kAlphaRowStartIdx + i] * component;
+                }
+            }
+        }
+        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_FRAGMENT_PROCESSOR_TEST;
 
     class GLProcessor : public GrGLFragmentProcessor {
@@ -426,51 +471,6 @@
         return cme.fMatrix == fMatrix;
     }
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) 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".
-        static const uint32_t kRGBAFlags[] = {
-            kR_GrColorComponentFlag,
-            kG_GrColorComponentFlag,
-            kB_GrColorComponentFlag,
-            kA_GrColorComponentFlag
-        };
-        static const int kShifts[] = {
-            GrColor_SHIFT_R, GrColor_SHIFT_G, GrColor_SHIFT_B, GrColor_SHIFT_A,
-        };
-        enum {
-            kAlphaRowStartIdx = 15,
-            kAlphaRowTranslateIdx = 19,
-        };
-
-        SkScalar outputA = 0;
-        for (int i = 0; i < 4; ++i) {
-            // If any relevant component of the color to be passed through the matrix is non-const
-            // then we can't know the final result.
-            if (0 != fMatrix.fMat[kAlphaRowStartIdx + i]) {
-                if (!(inout->fValidFlags & kRGBAFlags[i])) {
-                    inout->fValidFlags = 0;
-                    return;
-                } else {
-                    uint32_t component = (inout->fColor >> kShifts[i]) & 0xFF;
-                    outputA += fMatrix.fMat[kAlphaRowStartIdx + i] * component;
-                }
-            }
-        }
-        outputA += fMatrix.fMat[kAlphaRowTranslateIdx];
-        inout->fValidFlags = 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?
-        inout->fColor = static_cast<uint8_t>(SkScalarPin(outputA, 0, 255)) << GrColor_SHIFT_A;
-        inout->fIsSingleComponent = false;
-    }
-
     SkColorMatrix fMatrix;
 
     typedef GrFragmentProcessor INHERITED;
diff --git a/src/effects/SkDisplacementMapEffect.cpp b/src/effects/SkDisplacementMapEffect.cpp
index ace9e02..474d9a7 100644
--- a/src/effects/SkDisplacementMapEffect.cpp
+++ b/src/effects/SkDisplacementMapEffect.cpp
@@ -351,11 +351,11 @@
     typedef GrGLDisplacementMapEffect GLProcessor;
     static const char* Name() { return "DisplacementMap"; }
 
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+
 private:
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     GrDisplacementMapEffect(SkDisplacementMapEffect::ChannelSelectorType xChannelSelector,
                             SkDisplacementMapEffect::ChannelSelectorType yChannelSelector,
                             const SkVector& scale,
@@ -491,14 +491,14 @@
     return GrTBackendFragmentProcessorFactory<GrDisplacementMapEffect>::getInstance();
 }
 
-void GrDisplacementMapEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
+void GrDisplacementMapEffect::getConstantColorComponents(GrColor*,
+                                                         uint32_t* validFlags) const {
     // Any displacement offset bringing a pixel out of bounds will output a color of (0,0,0,0),
     // so the only way we'd get a constant alpha is if the input color image has a constant alpha
     // and no displacement offset push any texture coordinates out of bounds OR if the constant
     // alpha is 0. Since this isn't trivial to compute at this point, let's assume the output is
     // not of constant color when a displacement effect is applied.
-    inout->fValidFlags = 0;
-    inout->fIsSingleComponent = false;
+    *validFlags = 0;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
diff --git a/src/effects/SkLightingImageFilter.cpp b/src/effects/SkLightingImageFilter.cpp
index ce787c6..f766562 100644
--- a/src/effects/SkLightingImageFilter.cpp
+++ b/src/effects/SkLightingImageFilter.cpp
@@ -350,15 +350,15 @@
     SkScalar surfaceScale() const { return fSurfaceScale; }
     const SkMatrix& filterMatrix() const { return fFilterMatrix; }
 
+    virtual void getConstantColorComponents(GrColor* color,
+                                            uint32_t* validFlags) const SK_OVERRIDE {
+        // lighting shaders are complicated. We just throw up our hands.
+        *validFlags = 0;
+    }
+
 protected:
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE {
-        // lighting shaders are complicated. We just throw up our hands.
-        inout->fValidFlags = 0;
-        inout->fIsSingleComponent = false;
-    }
-
 private:
     typedef GrSingleTextureEffect INHERITED;
     const SkLight* fLight;
diff --git a/src/effects/SkLumaColorFilter.cpp b/src/effects/SkLumaColorFilter.cpp
index 616bcde..ee2bfa6 100644
--- a/src/effects/SkLumaColorFilter.cpp
+++ b/src/effects/SkLumaColorFilter.cpp
@@ -73,6 +73,13 @@
         return GrTBackendFragmentProcessorFactory<LumaColorFilterEffect>::getInstance();
     }
 
+    virtual void getConstantColorComponents(GrColor* color,
+                                            uint32_t* validFlags) const SK_OVERRIDE {
+        // The output is always black.
+        *color = GrColorPackRGBA(0, 0, 0, GrColorUnpackA(*color));
+        *validFlags = kRGB_GrColorComponentFlags;
+    }
+
     class GLProcessor : public GrGLFragmentProcessor {
     public:
         GLProcessor(const GrBackendProcessorFactory& factory,
@@ -112,13 +119,6 @@
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE {
         return true;
     }
-
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE {
-        // The output is always black.
-        inout->fColor = GrColorPackRGBA(0, 0, 0, GrColorUnpackA(inout->fColor));
-        inout->fValidFlags = kRGB_GrColorComponentFlags;
-        inout->fIsSingleComponent = false;
-    }
 };
 
 GrFragmentProcessor* SkLumaColorFilter::asFragmentProcessor(GrContext*) const {
diff --git a/src/effects/SkMagnifierImageFilter.cpp b/src/effects/SkMagnifierImageFilter.cpp
index d6a8e78..9d7b918 100644
--- a/src/effects/SkMagnifierImageFilter.cpp
+++ b/src/effects/SkMagnifierImageFilter.cpp
@@ -47,6 +47,8 @@
     static const char* Name() { return "Magnifier"; }
 
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE;
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+
     float x_offset() const { return fXOffset; }
     float y_offset() const { return fYOffset; }
     float x_inv_zoom() const { return fXInvZoom; }
@@ -74,8 +76,6 @@
 
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
     float fXOffset;
@@ -227,9 +227,8 @@
             this->fYInvInset == s.fYInvInset);
 }
 
-void GrMagnifierEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
-    this->updateInvariantOutputForModulation(inout);
-    inout->fIsSingleComponent = false;
+void GrMagnifierEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
+    this->updateConstantColorComponentsForModulation(color, validFlags);
 }
 
 #endif
diff --git a/src/effects/SkMorphologyImageFilter.cpp b/src/effects/SkMorphologyImageFilter.cpp
index 4c7f624..397e431 100644
--- a/src/effects/SkMorphologyImageFilter.cpp
+++ b/src/effects/SkMorphologyImageFilter.cpp
@@ -309,6 +309,7 @@
     typedef GrGLMorphologyEffect GLProcessor;
 
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE;
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
 
 protected:
 
@@ -317,8 +318,6 @@
 private:
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     GrMorphologyEffect(GrTexture*, Direction, int radius, MorphologyType);
 
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
@@ -456,11 +455,10 @@
             this->type() == s.type());
 }
 
-void GrMorphologyEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
+void GrMorphologyEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
     // This is valid because the color components of the result of the kernel all come
     // exactly from existing values in the source texture.
-    this->updateInvariantOutputForModulation(inout);
-    inout->fIsSingleComponent = false;
+    this->updateConstantColorComponentsForModulation(color, validFlags);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
diff --git a/src/effects/SkPerlinNoiseShader.cpp b/src/effects/SkPerlinNoiseShader.cpp
index 43197de..88e6cad 100644
--- a/src/effects/SkPerlinNoiseShader.cpp
+++ b/src/effects/SkPerlinNoiseShader.cpp
@@ -586,11 +586,6 @@
                fPaintingData->fStitchDataInit == s.fPaintingData->fStitchDataInit;
     }
 
-    void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE {
-        inout->fValidFlags = 0; // This is noise. Nothing is constant.
-        inout->fIsSingleComponent = false;
-    }
-
     GrPerlinNoiseEffect(SkPerlinNoiseShader::Type type,
                         int numOctaves, bool stitchTiles,
                         SkPerlinNoiseShader::PaintingData* paintingData,
@@ -621,6 +616,10 @@
     GrTextureAccess                 fNoiseAccess;
     SkPerlinNoiseShader::PaintingData *fPaintingData;
 
+    void getConstantColorComponents(GrColor*, uint32_t* validFlags) const SK_OVERRIDE {
+        *validFlags = 0; // This is noise. Nothing is constant.
+    }
+
 private:
     typedef GrFragmentProcessor INHERITED;
 };
diff --git a/src/effects/SkTableColorFilter.cpp b/src/effects/SkTableColorFilter.cpp
index f6726ca..4853f73 100644
--- a/src/effects/SkTableColorFilter.cpp
+++ b/src/effects/SkTableColorFilter.cpp
@@ -294,20 +294,20 @@
     static const char* Name() { return "ColorTable"; }
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE;
 
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+
     typedef GLColorTableEffect GLProcessor;
 
 private:
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     explicit ColorTableEffect(GrTexture* texture, unsigned flags);
 
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
     GrTextureAccess fTextureAccess;
     unsigned        fFlags; // currently not used in shader code, just to assist
-                            // onComputeInvariantOutput().
+                            // getConstantColorComponents().
 
     typedef GrFragmentProcessor INHERITED;
 };
@@ -401,22 +401,21 @@
     return this->texture(0) == sBase.texture(0);
 }
 
-void ColorTableEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
+void ColorTableEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
     // If we kept the table in the effect then we could actually run known inputs through the
     // table.
     if (fFlags & SkTable_ColorFilter::kR_Flag) {
-        inout->fValidFlags &= ~kR_GrColorComponentFlag;
+        *validFlags &= ~kR_GrColorComponentFlag;
     }
     if (fFlags & SkTable_ColorFilter::kG_Flag) {
-        inout->fValidFlags &= ~kG_GrColorComponentFlag;
+        *validFlags &= ~kG_GrColorComponentFlag;
     }
     if (fFlags & SkTable_ColorFilter::kB_Flag) {
-        inout->fValidFlags &= ~kB_GrColorComponentFlag;
+        *validFlags &= ~kB_GrColorComponentFlag;
     }
     if (fFlags & SkTable_ColorFilter::kA_Flag) {
-        inout->fValidFlags &= ~kA_GrColorComponentFlag;
+        *validFlags &= ~kA_GrColorComponentFlag;
     }
-    inout->fIsSingleComponent = false;
 }
 
 
diff --git a/src/effects/gradients/SkGradientShader.cpp b/src/effects/gradients/SkGradientShader.cpp
index 89b323a..d25873b 100644
--- a/src/effects/gradients/SkGradientShader.cpp
+++ b/src/effects/gradients/SkGradientShader.cpp
@@ -1217,13 +1217,12 @@
     return false;
 }
 
-void GrGradientEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
-    if (fIsOpaque && inout->isOpaque()) {
-        inout->fValidFlags = kA_GrColorComponentFlag;
+void GrGradientEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
+    if (fIsOpaque && (kA_GrColorComponentFlag & *validFlags) && 0xff == GrColorUnpackA(*color)) {
+        *validFlags = kA_GrColorComponentFlag;
     } else {
-        inout->fValidFlags = 0;
+        *validFlags = 0;
     }
-    inout->fIsSingleComponent = false;
 }
 
 int GrGradientEffect::RandomGradientParams(SkRandom* random,
diff --git a/src/effects/gradients/SkGradientShaderPriv.h b/src/effects/gradients/SkGradientShaderPriv.h
index 33d8add..b81b562 100644
--- a/src/effects/gradients/SkGradientShaderPriv.h
+++ b/src/effects/gradients/SkGradientShaderPriv.h
@@ -342,6 +342,8 @@
     bool useAtlas() const { return SkToBool(-1 != fRow); }
     SkScalar getYCoord() const { return fYCoord; };
 
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+
     SkGradientShaderBase::GpuColorType getColorType() const { return fColorType; }
 
     enum PremulType {
@@ -374,8 +376,6 @@
 
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     const GrCoordTransform& getCoordTransform() const { return fCoordTransform; }
 
 private:
diff --git a/src/gpu/GrAAConvexPathRenderer.cpp b/src/gpu/GrAAConvexPathRenderer.cpp
index 1aa90c3..dc74459 100644
--- a/src/gpu/GrAAConvexPathRenderer.cpp
+++ b/src/gpu/GrAAConvexPathRenderer.cpp
@@ -517,6 +517,11 @@
 
     static const char* Name() { return "QuadEdge"; }
 
+    virtual void getConstantColorComponents(GrColor* color,
+                                            uint32_t* validFlags) const SK_OVERRIDE {
+        *validFlags = 0;
+    }
+
     const GrShaderVar& inQuadEdge() const { return fInQuadEdge; }
 
     virtual const GrBackendGeometryProcessorFactory& getFactory() const SK_OVERRIDE {
@@ -588,11 +593,6 @@
         return true;
     }
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE {
-        inout->fValidFlags = 0;
-        inout->fIsSingleComponent = false;
-    }
-
     const GrShaderVar& fInQuadEdge;
 
     GR_DECLARE_GEOMETRY_PROCESSOR_TEST;
diff --git a/src/gpu/GrAARectRenderer.cpp b/src/gpu/GrAARectRenderer.cpp
index 0b895d1..5720982 100644
--- a/src/gpu/GrAARectRenderer.cpp
+++ b/src/gpu/GrAARectRenderer.cpp
@@ -30,6 +30,11 @@
 
     static const char* Name() { return "AlignedRectEdge"; }
 
+    virtual void getConstantColorComponents(GrColor* color,
+                                            uint32_t* validFlags) const SK_OVERRIDE {
+        *validFlags = 0;
+    }
+
     const GrShaderVar& inRect() const { return fInRect; }
 
     virtual const GrBackendGeometryProcessorFactory& getFactory() const SK_OVERRIDE {
@@ -107,11 +112,6 @@
 
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE { return true; }
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE {
-        inout->fValidFlags = 0;
-        inout->fIsSingleComponent = false;
-    }
-
     GR_DECLARE_GEOMETRY_PROCESSOR_TEST;
 
     typedef GrGeometryProcessor INHERITED;
@@ -155,6 +155,11 @@
 
     static const char* Name() { return "RectEdge"; }
 
+    virtual void getConstantColorComponents(GrColor* color,
+                                            uint32_t* validFlags) const SK_OVERRIDE {
+        *validFlags = 0;
+    }
+
     const GrShaderVar& inRectEdge() const { return fInRectEdge; }
     const GrShaderVar& inWidthHeight() const { return fInWidthHeight; }
 
@@ -252,11 +257,6 @@
 
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE { return true; }
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE {
-        inout->fValidFlags = 0;
-        inout->fIsSingleComponent = false;
-    }
-
     const GrShaderVar& fInRectEdge;
     const GrShaderVar& fInWidthHeight;
 
diff --git a/src/gpu/GrDrawState.cpp b/src/gpu/GrDrawState.cpp
index b4cf9c8..872d20a 100644
--- a/src/gpu/GrDrawState.cpp
+++ b/src/gpu/GrDrawState.cpp
@@ -421,26 +421,26 @@
         return true;
     }
 
-    GrProcessor::InvariantOutput inout;
-    inout.fIsSingleComponent = false;
+    GrColor coverage;
+    uint32_t validComponentFlags;
     // Initialize to an unknown starting coverage if per-vertex coverage is specified.
     if (this->hasCoverageVertexAttribute()) {
-        inout.fValidFlags = 0;
+        validComponentFlags = 0;
     } else {
-        inout.fColor = fCoverage;
-        inout.fValidFlags = kRGBA_GrColorComponentFlags;
+        coverage = fCoverage;
+        validComponentFlags = kRGBA_GrColorComponentFlags;
     }
 
     // Run through the coverage stages and see if the coverage will be all ones at the end.
     if (this->hasGeometryProcessor()) {
         const GrGeometryProcessor* gp = fGeometryProcessor->getGeometryProcessor();
-        gp->computeInvariantOutput(&inout);
+        gp->getConstantColorComponents(&coverage, &validComponentFlags);
     }
     for (int s = 0; s < this->numCoverageStages(); ++s) {
         const GrProcessor* processor = this->getCoverageStage(s).getProcessor();
-        processor->computeInvariantOutput(&inout);
+        processor->getConstantColorComponents(&coverage, &validComponentFlags);
     }
-    return inout.isSolidWhite();
+    return (kRGBA_GrColorComponentFlags == validComponentFlags) && (0xffffffff == coverage);
 }
 
 //////////////////////////////////////////////////////////////////////////////
@@ -755,54 +755,55 @@
 
 
 bool GrDrawState::srcAlphaWillBeOne() const {
-    GrProcessor::InvariantOutput inoutColor;
-    inoutColor.fIsSingleComponent = false;
+    uint32_t validComponentFlags;
+    GrColor color;
     // Check if per-vertex or constant color may have partial alpha
     if (this->hasColorVertexAttribute()) {
         if (fHints & kVertexColorsAreOpaque_Hint) {
-            inoutColor.fValidFlags = kA_GrColorComponentFlag;
-            inoutColor.fColor = 0xFF << GrColor_SHIFT_A;
+            validComponentFlags = kA_GrColorComponentFlag;
+            color = 0xFF << GrColor_SHIFT_A;
         } else {
-            inoutColor.fValidFlags = 0;
-            // not strictly necessary but we get false alarms from tools about uninit.
-            inoutColor.fColor = 0;
+            validComponentFlags = 0;
+            color = 0; // not strictly necessary but we get false alarms from tools about uninit.
         }
     } else {
-        inoutColor.fValidFlags = kRGBA_GrColorComponentFlags;
-        inoutColor.fColor = this->getColor();
+        validComponentFlags = kRGBA_GrColorComponentFlags;
+        color = this->getColor();
     }
 
     // Run through the color stages
     for (int s = 0; s < this->numColorStages(); ++s) {
         const GrProcessor* processor = this->getColorStage(s).getProcessor();
-        processor->computeInvariantOutput(&inoutColor);
+        processor->getConstantColorComponents(&color, &validComponentFlags);
     }
 
     // Check whether coverage is treated as color. If so we run through the coverage computation.
     if (this->isCoverageDrawing()) {
         // The shader generated for coverage drawing runs the full coverage computation and then
         // makes the shader output be the multiplication of color and coverage. We mirror that here.
-        GrProcessor::InvariantOutput inoutCoverage;
-        inoutCoverage.fIsSingleComponent = false;
+        GrColor coverage;
+        uint32_t coverageComponentFlags;
         if (this->hasCoverageVertexAttribute()) {
-            inoutCoverage.fValidFlags = 0;
-            inoutCoverage.fColor = 0; // suppresses any warnings.
+            coverageComponentFlags = 0;
+            coverage = 0; // suppresses any warnings.
         } else {
-            inoutCoverage.fValidFlags = kRGBA_GrColorComponentFlags;
-            inoutCoverage.fColor = this->getCoverageColor();
+            coverageComponentFlags = kRGBA_GrColorComponentFlags;
+            coverage = this->getCoverageColor();
         }
 
         // Run through the coverage stages
         for (int s = 0; s < this->numCoverageStages(); ++s) {
             const GrProcessor* processor = this->getCoverageStage(s).getProcessor();
-            processor->computeInvariantOutput(&inoutCoverage);
+            processor->getConstantColorComponents(&coverage, &coverageComponentFlags);
         }
 
         // Since the shader will multiply coverage and color, the only way the final A==1 is if
         // coverage and color both have A==1.
-        return (inoutColor.isOpaque() && inoutCoverage.isOpaque());
+        return (kA_GrColorComponentFlag & validComponentFlags & coverageComponentFlags) &&
+                0xFF == GrColorUnpackA(color) && 0xFF == GrColorUnpackA(coverage);
+
     }
 
-    return inoutColor.isOpaque();
+    return (kA_GrColorComponentFlag & validComponentFlags) && 0xFF == GrColorUnpackA(color);
 }
 
diff --git a/src/gpu/GrOptDrawState.cpp b/src/gpu/GrOptDrawState.cpp
index 6a79203..98a5689 100644
--- a/src/gpu/GrOptDrawState.cpp
+++ b/src/gpu/GrOptDrawState.cpp
@@ -170,19 +170,18 @@
     int firstColorStage = 0;
 
     // Set up color and flags for ConstantColorComponent checks
-    GrProcessor::InvariantOutput inout;
-    inout.fIsSingleComponent = false;
+    GrColor color;
+    uint32_t validComponentFlags;
     if (!this->hasColorVertexAttribute()) {
-        inout.fColor = ds.getColor();
-        inout.fValidFlags = kRGBA_GrColorComponentFlags;
+        color = ds.getColor();
+        validComponentFlags = kRGBA_GrColorComponentFlags;
     } else {
         if (ds.vertexColorsAreOpaque()) {
-            inout.fColor = 0xFF << GrColor_SHIFT_A;
-            inout.fValidFlags = kA_GrColorComponentFlag;
+            color = 0xFF << GrColor_SHIFT_A;
+            validComponentFlags = kA_GrColorComponentFlag;
         } else {
-            inout.fValidFlags = 0;
-            // not strictly necessary but we get false alarms from tools about uninit.
-            inout.fColor = 0;
+            validComponentFlags = 0;
+            color = 0; // not strictly necessary but we get false alarms from tools about uninit.
         }
     }
 
@@ -192,10 +191,10 @@
             firstColorStage = i;
             fInputColorIsUsed = false;
         }
-        fp->computeInvariantOutput(&inout);
-        if (kRGBA_GrColorComponentFlags == inout.fValidFlags) {
+        fp->getConstantColorComponents(&color, &validComponentFlags);
+        if (kRGBA_GrColorComponentFlags == validComponentFlags) {
             firstColorStage = i + 1;
-            fColor = inout.fColor;
+            fColor = color;
             fInputColorIsUsed = true;
             this->removeFixedFunctionVertexAttribs(0x1 << kColor_GrVertexAttribBinding);
         }
diff --git a/src/gpu/GrOvalRenderer.cpp b/src/gpu/GrOvalRenderer.cpp
index 7a84f80..4ae0ebc 100644
--- a/src/gpu/GrOvalRenderer.cpp
+++ b/src/gpu/GrOvalRenderer.cpp
@@ -75,6 +75,11 @@
         }
     }
 
+    virtual void getConstantColorComponents(GrColor* color,
+                                            uint32_t* validFlags) const SK_OVERRIDE {
+        *validFlags = 0;
+    }
+
     const GrShaderVar& inCircleEdge() const { return fInCircleEdge; }
 
     virtual const GrBackendGeometryProcessorFactory& getFactory() const SK_OVERRIDE {
@@ -145,11 +150,6 @@
         return cee.fStroke == fStroke;
     }
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE {
-        inout->fValidFlags = 0;
-        inout->fIsSingleComponent = false;
-    }
-
     const GrShaderVar& fInCircleEdge;
     bool fStroke;
 
@@ -192,6 +192,11 @@
         }
     }
 
+    virtual void getConstantColorComponents(GrColor* color,
+                                            uint32_t* validFlags) const SK_OVERRIDE {
+        *validFlags = 0;
+    }
+
     virtual const GrBackendGeometryProcessorFactory& getFactory() const SK_OVERRIDE {
         return GrTBackendGeometryProcessorFactory<EllipseEdgeEffect>::getInstance();
     }
@@ -286,11 +291,6 @@
         return eee.fStroke == fStroke;
     }
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE {
-        inout->fValidFlags = 0;
-        inout->fIsSingleComponent = false;
-    }
-
     const GrShaderVar& fInEllipseOffset;
     const GrShaderVar& fInEllipseRadii;
     bool fStroke;
@@ -341,6 +341,11 @@
         }
     }
 
+    virtual void getConstantColorComponents(GrColor* color,
+                                            uint32_t* validFlags) const SK_OVERRIDE {
+        *validFlags = 0;
+    }
+
     virtual const GrBackendGeometryProcessorFactory& getFactory() const SK_OVERRIDE {
         return GrTBackendGeometryProcessorFactory<DIEllipseEdgeEffect>::getInstance();
     }
@@ -455,11 +460,6 @@
         return eee.fMode == fMode;
     }
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE {
-        inout->fValidFlags = 0;
-        inout->fIsSingleComponent = false;
-    }
-
     const GrShaderVar& fInEllipseOffsets0;
     const GrShaderVar& fInEllipseOffsets1;
     Mode fMode;
diff --git a/src/gpu/GrPaint.cpp b/src/gpu/GrPaint.cpp
index ffde5f9..84fdf42 100644
--- a/src/gpu/GrPaint.cpp
+++ b/src/gpu/GrPaint.cpp
@@ -52,32 +52,28 @@
 
     // TODO: Share this implementation with GrDrawState
 
-    GrProcessor::InvariantOutput inout;
-    inout.fColor = GrColorPackRGBA(fCoverage, fCoverage, fCoverage, fCoverage);
-    inout.fValidFlags = kRGBA_GrColorComponentFlags;
-    inout.fIsSingleComponent = false;
+    GrColor coverage = GrColorPackRGBA(fCoverage, fCoverage, fCoverage, fCoverage);
+    uint32_t coverageComps = kRGBA_GrColorComponentFlags;
     int count = fCoverageStages.count();
     for (int i = 0; i < count; ++i) {
-        fCoverageStages[i].getProcessor()->computeInvariantOutput(&inout);
+        fCoverageStages[i].getProcessor()->getConstantColorComponents(&coverage, &coverageComps);
     }
-    if (!inout.isSolidWhite()) {
+    if (kRGBA_GrColorComponentFlags != coverageComps || 0xffffffff != coverage) {
         return false;
     }
 
-    inout.fColor = fColor;
-    inout.fValidFlags = kRGBA_GrColorComponentFlags;
-    inout.fIsSingleComponent = false;
+    GrColor color = fColor;
+    uint32_t colorComps = kRGBA_GrColorComponentFlags;
     count = fColorStages.count();
     for (int i = 0; i < count; ++i) {
-        fColorStages[i].getProcessor()->computeInvariantOutput(&inout);
+        fColorStages[i].getProcessor()->getConstantColorComponents(&color, &colorComps);
     }
 
     SkASSERT((NULL == solidColor) == (NULL == solidColorKnownComponents));
 
     GrBlendCoeff srcCoeff = fSrcBlendCoeff;
     GrBlendCoeff dstCoeff = fDstBlendCoeff;
-    GrSimplifyBlend(&srcCoeff, &dstCoeff, inout.fColor, inout.fValidFlags,
-                    0, 0, 0);
+    GrSimplifyBlend(&srcCoeff, &dstCoeff, color, colorComps, 0, 0, 0);
 
     bool opaque = kZero_GrBlendCoeff == dstCoeff && !GrBlendCoeffRefsDst(srcCoeff);
     if (solidColor) {
@@ -89,8 +85,8 @@
                     break;
 
                 case kOne_GrBlendCoeff:
-                    *solidColor = inout.fColor;
-                    *solidColorKnownComponents = inout.fValidFlags;
+                    *solidColor = color;
+                    *solidColorKnownComponents = colorComps;
                     break;
 
                 // The src coeff should never refer to the src and if it refers to dst then opaque
diff --git a/src/gpu/GrProcessor.cpp b/src/gpu/GrProcessor.cpp
index 26e0053..45298b5 100644
--- a/src/gpu/GrProcessor.cpp
+++ b/src/gpu/GrProcessor.cpp
@@ -88,46 +88,4 @@
         SkASSERT(this->textureAccess(i) == other.textureAccess(i));
     }
 }
-
-void GrProcessor::InvariantOutput::validate() const {
-    if (fIsSingleComponent) {
-        SkASSERT(0 == fValidFlags || kRGBA_GrColorComponentFlags == fValidFlags);
-        if (kRGBA_GrColorComponentFlags == fValidFlags) {
-            SkASSERT(this->colorComponentsAllEqual());
-        }
-    }
-
-    SkASSERT(this->validPreMulColor());
-}
-
-bool GrProcessor::InvariantOutput::colorComponentsAllEqual() const {
-    unsigned colorA = GrColorUnpackA(fColor);
-    return(GrColorUnpackR(fColor) == colorA &&
-           GrColorUnpackG(fColor) == colorA &&
-           GrColorUnpackB(fColor) == colorA);
-}
-
-bool GrProcessor::InvariantOutput::validPreMulColor() const {
-    if (kA_GrColorComponentFlag & fValidFlags) {
-        float c[4];
-        GrColorToRGBAFloat(fColor, c);
-        if (kR_GrColorComponentFlag & fValidFlags) {
-            if (c[0] > c[3]) {
-                return false;
-            }
-        }
-        if (kG_GrColorComponentFlag & fValidFlags) {
-            if (c[1] > c[3]) {
-                return false;
-            }
-        }
-        if (kB_GrColorComponentFlag & fValidFlags) {
-            if (c[2] > c[3]) {
-                return false;
-            }
-        }
-    }
-    return true;
-}
 #endif
-
diff --git a/src/gpu/effects/GrBezierEffect.h b/src/gpu/effects/GrBezierEffect.h
index 4631a2c..cb79ac3 100644
--- a/src/gpu/effects/GrBezierEffect.h
+++ b/src/gpu/effects/GrBezierEffect.h
@@ -97,6 +97,11 @@
 
     typedef GrGLConicEffect GLProcessor;
 
+    virtual void getConstantColorComponents(GrColor* color,
+                                            uint32_t* validFlags) const SK_OVERRIDE {
+        *validFlags = 0;
+    }
+
     virtual const GrBackendGeometryProcessorFactory& getFactory() const SK_OVERRIDE;
 
 private:
@@ -104,11 +109,6 @@
 
     virtual bool onIsEqual(const GrProcessor& other) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE {
-        inout->fValidFlags = 0;
-        inout->fIsSingleComponent = false;
-    }
-
     GrPrimitiveEdgeType   fEdgeType;
     const GrShaderVar& fInConicCoeffs;
 
@@ -170,6 +170,11 @@
 
     typedef GrGLQuadEffect GLProcessor;
 
+    virtual void getConstantColorComponents(GrColor* color,
+                                            uint32_t* validFlags) const SK_OVERRIDE {
+        *validFlags = 0;
+    }
+
     virtual const GrBackendGeometryProcessorFactory& getFactory() const SK_OVERRIDE;
 
 private:
@@ -177,11 +182,6 @@
 
     virtual bool onIsEqual(const GrProcessor& other) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE {
-        inout->fValidFlags = 0;
-        inout->fIsSingleComponent = false;
-    }
-
     GrPrimitiveEdgeType   fEdgeType;
     const GrShaderVar& fInHairQuadEdge;
 
@@ -245,6 +245,11 @@
 
     typedef GrGLCubicEffect GLProcessor;
 
+    virtual void getConstantColorComponents(GrColor* color,
+                                            uint32_t* validFlags) const SK_OVERRIDE {
+        *validFlags = 0;
+    }
+
     virtual const GrBackendGeometryProcessorFactory& getFactory() const SK_OVERRIDE;
 
 private:
@@ -252,11 +257,6 @@
 
     virtual bool onIsEqual(const GrProcessor& other) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE {
-        inout->fValidFlags = 0;
-        inout->fIsSingleComponent = false;
-    }
-
     GrPrimitiveEdgeType   fEdgeType;
     const GrShaderVar& fInCubicCoeffs;
 
diff --git a/src/gpu/effects/GrBicubicEffect.cpp b/src/gpu/effects/GrBicubicEffect.cpp
index f5cc9d1..d73e604 100644
--- a/src/gpu/effects/GrBicubicEffect.cpp
+++ b/src/gpu/effects/GrBicubicEffect.cpp
@@ -169,10 +169,9 @@
            fDomain == s.fDomain;
 }
 
-void GrBicubicEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
+void GrBicubicEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
     // FIXME: Perhaps we can do better.
-    inout->fValidFlags = 0;
-    inout->fIsSingleComponent = false;
+    *validFlags = 0;
     return;
 }
 
diff --git a/src/gpu/effects/GrBicubicEffect.h b/src/gpu/effects/GrBicubicEffect.h
index e36aa8d..03476da 100644
--- a/src/gpu/effects/GrBicubicEffect.h
+++ b/src/gpu/effects/GrBicubicEffect.h
@@ -29,6 +29,7 @@
     typedef GrGLBicubicEffect GLProcessor;
 
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE;
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
 
     const GrTextureDomain& domain() const { return fDomain; }
 
@@ -92,8 +93,6 @@
                     const SkMatrix &matrix, const SkRect& domain);
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     float           fCoefficients[16];
     GrTextureDomain fDomain;
 
diff --git a/src/gpu/effects/GrConfigConversionEffect.cpp b/src/gpu/effects/GrConfigConversionEffect.cpp
index f60be2a..3042d86 100644
--- a/src/gpu/effects/GrConfigConversionEffect.cpp
+++ b/src/gpu/effects/GrConfigConversionEffect.cpp
@@ -126,9 +126,9 @@
            other.fPMConversion == fPMConversion;
 }
 
-void GrConfigConversionEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
-    this->updateInvariantOutputForModulation(inout);
-    inout->fIsSingleComponent = false;
+void GrConfigConversionEffect::getConstantColorComponents(GrColor* color,
+                                                          uint32_t* validFlags) const {
+    this->updateConstantColorComponentsForModulation(color, validFlags);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
diff --git a/src/gpu/effects/GrConfigConversionEffect.h b/src/gpu/effects/GrConfigConversionEffect.h
index aa2c874..765e49b 100644
--- a/src/gpu/effects/GrConfigConversionEffect.h
+++ b/src/gpu/effects/GrConfigConversionEffect.h
@@ -43,6 +43,8 @@
 
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE;
 
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+
     bool swapsRedAndBlue() const { return fSwapRedAndBlue; }
     PMConversion  pmConversion() const { return fPMConversion; }
 
@@ -63,8 +65,6 @@
 
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     bool            fSwapRedAndBlue;
     PMConversion    fPMConversion;
 
diff --git a/src/gpu/effects/GrConvexPolyEffect.cpp b/src/gpu/effects/GrConvexPolyEffect.cpp
index 836596a..4857a9e 100644
--- a/src/gpu/effects/GrConvexPolyEffect.cpp
+++ b/src/gpu/effects/GrConvexPolyEffect.cpp
@@ -29,6 +29,17 @@
         return SkNEW_ARGS(AARectEffect, (edgeType, rect));
     }
 
+    virtual void getConstantColorComponents(GrColor* color,
+                                            uint32_t* validFlags) const SK_OVERRIDE {
+        if (fRect.isEmpty()) {
+            // An empty rect will have no coverage anywhere.
+            *color = 0x00000000;
+            *validFlags = kRGBA_GrColorComponentFlags;
+        } else {
+            *validFlags = 0;
+        }
+    }
+
     GrPrimitiveEdgeType getEdgeType() const { return fEdgeType; }
 
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE;
@@ -43,17 +54,6 @@
         return fRect == aare.fRect;
     }
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE {
-        if (fRect.isEmpty()) {
-            // An empty rect will have no coverage anywhere.
-            inout->fColor = 0x00000000;
-            inout->fValidFlags = kRGBA_GrColorComponentFlags;
-        } else {
-            inout->fValidFlags = 0;
-        }
-        inout->fIsSingleComponent = false;
-    }
-
     SkRect              fRect;
     GrPrimitiveEdgeType fEdgeType;
 
@@ -328,9 +328,8 @@
 
 GrConvexPolyEffect::~GrConvexPolyEffect() {}
 
-void GrConvexPolyEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
-    inout->fValidFlags = 0;
-    inout->fIsSingleComponent = false;
+void GrConvexPolyEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
+    *validFlags = 0;
 }
 
 const GrBackendFragmentProcessorFactory& GrConvexPolyEffect::getFactory() const {
diff --git a/src/gpu/effects/GrConvexPolyEffect.h b/src/gpu/effects/GrConvexPolyEffect.h
index 7f76f79..e474939 100644
--- a/src/gpu/effects/GrConvexPolyEffect.h
+++ b/src/gpu/effects/GrConvexPolyEffect.h
@@ -70,6 +70,8 @@
 
     typedef GrGLConvexPolyEffect GLProcessor;
 
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE;
 
 private:
@@ -77,8 +79,6 @@
 
     virtual bool onIsEqual(const GrProcessor& other) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     GrPrimitiveEdgeType    fEdgeType;
     int                    fEdgeCount;
     SkScalar               fEdges[3 * kMaxEdges];
diff --git a/src/gpu/effects/GrConvolutionEffect.h b/src/gpu/effects/GrConvolutionEffect.h
index f61f378..f2a2d5a 100644
--- a/src/gpu/effects/GrConvolutionEffect.h
+++ b/src/gpu/effects/GrConvolutionEffect.h
@@ -64,6 +64,12 @@
 
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE;
 
+    virtual void getConstantColorComponents(GrColor*, uint32_t* validFlags) const {
+        // If the texture was opaque we could know that the output color if we knew the sum of the
+        // kernel values.
+        *validFlags = 0;
+    }
+
     enum {
         // This was decided based on the min allowed value for the max texture
         // samples per fragment program run in DX9SM2 (32). A sigma param of 4.0
@@ -97,13 +103,6 @@
 
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const {
-        // If the texture was opaque we could know that the output color if we knew the sum of the
-        // kernel values.
-        inout->fValidFlags = 0;
-        inout->fIsSingleComponent = false;
-    }
-
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
     typedef Gr1DKernelEffect INHERITED;
diff --git a/src/gpu/effects/GrCustomCoordsTextureEffect.cpp b/src/gpu/effects/GrCustomCoordsTextureEffect.cpp
index 7362ba9..b9794c1 100644
--- a/src/gpu/effects/GrCustomCoordsTextureEffect.cpp
+++ b/src/gpu/effects/GrCustomCoordsTextureEffect.cpp
@@ -72,13 +72,14 @@
     return fTextureAccess == cte.fTextureAccess;
 }
 
-void GrCustomCoordsTextureEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
-    if (inout->isOpaque() && GrPixelConfigIsOpaque(this->texture(0)->config())) {
-        inout->fValidFlags = kA_GrColorComponentFlag;
+void GrCustomCoordsTextureEffect::getConstantColorComponents(GrColor* color,
+                                                             uint32_t* validFlags) const {
+    if ((*validFlags & kA_GrColorComponentFlag) && 0xFF == GrColorUnpackA(*color) &&
+        GrPixelConfigIsOpaque(this->texture(0)->config())) {
+        *validFlags = kA_GrColorComponentFlag;
     } else {
-        inout->fValidFlags = 0;
+        *validFlags = 0;
     }
-    inout->fIsSingleComponent = false;
 }
 
 const GrBackendGeometryProcessorFactory& GrCustomCoordsTextureEffect::getFactory() const {
diff --git a/src/gpu/effects/GrCustomCoordsTextureEffect.h b/src/gpu/effects/GrCustomCoordsTextureEffect.h
index 0a6af7d..f48a144 100644
--- a/src/gpu/effects/GrCustomCoordsTextureEffect.h
+++ b/src/gpu/effects/GrCustomCoordsTextureEffect.h
@@ -28,6 +28,8 @@
 
     static const char* Name() { return "Texture"; }
 
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+
     const GrShaderVar& inTextureCoords() const { return fInTextureCoords; }
 
     typedef GrGLCustomCoordsTextureEffect GLProcessor;
@@ -39,8 +41,6 @@
 
     virtual bool onIsEqual(const GrProcessor& other) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     GrTextureAccess    fTextureAccess;
     const GrShaderVar& fInTextureCoords;
 
diff --git a/src/gpu/effects/GrDashingEffect.cpp b/src/gpu/effects/GrDashingEffect.cpp
index 4df1f02..704a6ac 100644
--- a/src/gpu/effects/GrDashingEffect.cpp
+++ b/src/gpu/effects/GrDashingEffect.cpp
@@ -456,6 +456,8 @@
 
     typedef GLDashingCircleEffect GLProcessor;
 
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+
     virtual const GrBackendGeometryProcessorFactory& getFactory() const SK_OVERRIDE;
 
 private:
@@ -463,8 +465,6 @@
 
     virtual bool onIsEqual(const GrProcessor& other) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     GrPrimitiveEdgeType    fEdgeType;
     const GrShaderVar&  fInCoord;
     SkScalar            fIntervalLength;
@@ -584,9 +584,8 @@
 
 DashingCircleEffect::~DashingCircleEffect() {}
 
-void DashingCircleEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
-    inout->fValidFlags = 0;
-    inout->fIsSingleComponent = false;
+void DashingCircleEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
+    *validFlags = 0;
 }
 
 const GrBackendGeometryProcessorFactory& DashingCircleEffect::getFactory() const {
@@ -669,6 +668,8 @@
 
     typedef GLDashingLineEffect GLProcessor;
 
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+
     virtual const GrBackendGeometryProcessorFactory& getFactory() const SK_OVERRIDE;
 
 private:
@@ -676,8 +677,6 @@
 
     virtual bool onIsEqual(const GrProcessor& other) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     GrPrimitiveEdgeType    fEdgeType;
     const GrShaderVar&  fInCoord;
     SkRect              fRect;
@@ -808,9 +807,8 @@
 
 DashingLineEffect::~DashingLineEffect() {}
 
-void DashingLineEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
-    inout->fValidFlags = 0;
-    inout->fIsSingleComponent = false;
+void DashingLineEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
+    *validFlags = 0;
 }
 
 const GrBackendGeometryProcessorFactory& DashingLineEffect::getFactory() const {
diff --git a/src/gpu/effects/GrDistanceFieldTextureEffect.cpp b/src/gpu/effects/GrDistanceFieldTextureEffect.cpp
index 245a035..d5d3348 100755
--- a/src/gpu/effects/GrDistanceFieldTextureEffect.cpp
+++ b/src/gpu/effects/GrDistanceFieldTextureEffect.cpp
@@ -206,14 +206,14 @@
            fFlags == cte.fFlags;
 }
 
-void GrDistanceFieldTextureEffect::onComputeInvariantOutput(
-    InvariantOutput* inout) const {
-    if (inout->isOpaque() && GrPixelConfigIsOpaque(this->texture(0)->config())) {
-        inout->fValidFlags = kA_GrColorComponentFlag;
+void GrDistanceFieldTextureEffect::getConstantColorComponents(GrColor* color,
+                                                             uint32_t* validFlags) const {
+    if ((*validFlags & kA_GrColorComponentFlag) && 0xFF == GrColorUnpackA(*color) &&
+        GrPixelConfigIsOpaque(this->texture(0)->config())) {
+        *validFlags = kA_GrColorComponentFlag;
     } else {
-        inout->fValidFlags = 0;
+        *validFlags = 0;
     }
-    inout->fIsSingleComponent = false;
 }
 
 const GrBackendGeometryProcessorFactory& GrDistanceFieldTextureEffect::getFactory() const {
@@ -476,14 +476,14 @@
             fFlags == cte.fFlags);
 }
 
-void GrDistanceFieldLCDTextureEffect::onComputeInvariantOutput(
-    InvariantOutput* inout) const {
-    if (inout->isOpaque() && GrPixelConfigIsOpaque(this->texture(0)->config())) {
-        inout->fValidFlags = kA_GrColorComponentFlag;
+void GrDistanceFieldLCDTextureEffect::getConstantColorComponents(GrColor* color,
+                                                                 uint32_t* validFlags) const {
+    if ((*validFlags & kA_GrColorComponentFlag) && 0xFF == GrColorUnpackA(*color) &&
+        GrPixelConfigIsOpaque(this->texture(0)->config())) {
+        *validFlags = kA_GrColorComponentFlag;
     } else {
-        inout->fValidFlags = 0;
+        *validFlags = 0;
     }
-    inout->fIsSingleComponent = false;
 }
 
 const GrBackendGeometryProcessorFactory& GrDistanceFieldLCDTextureEffect::getFactory() const {
diff --git a/src/gpu/effects/GrDistanceFieldTextureEffect.h b/src/gpu/effects/GrDistanceFieldTextureEffect.h
index efd622e..b8d774d 100644
--- a/src/gpu/effects/GrDistanceFieldTextureEffect.h
+++ b/src/gpu/effects/GrDistanceFieldTextureEffect.h
@@ -58,6 +58,8 @@
 
     static const char* Name() { return "DistanceFieldTexture"; }
 
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+
     const GrShaderVar& inTextureCoords() const { return fInTextureCoords; }
 #ifdef SK_GAMMA_APPLY_TO_A8
     float getLuminance() const { return fLuminance; }
@@ -77,8 +79,6 @@
 
     virtual bool onIsEqual(const GrProcessor& other) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     GrTextureAccess    fTextureAccess;
 #ifdef SK_GAMMA_APPLY_TO_A8
     GrTextureAccess    fGammaTextureAccess;
@@ -112,6 +112,7 @@
     static const char* Name() { return "DistanceFieldLCDTexture"; }
 
     const GrShaderVar& inTextureCoords() const { return fInTextureCoords; }
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
     GrColor getTextColor() const { return fTextColor; }
     uint32_t getFlags() const { return fFlags; }
 
@@ -127,8 +128,6 @@
 
     virtual bool onIsEqual(const GrProcessor& other) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     GrTextureAccess    fTextureAccess;
     GrTextureAccess    fGammaTextureAccess;
     GrColor            fTextColor;
diff --git a/src/gpu/effects/GrDitherEffect.cpp b/src/gpu/effects/GrDitherEffect.cpp
index e7f90ac..fe7447d 100644
--- a/src/gpu/effects/GrDitherEffect.cpp
+++ b/src/gpu/effects/GrDitherEffect.cpp
@@ -30,6 +30,8 @@
 
     typedef GLDitherEffect GLProcessor;
 
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE {
         return GrTBackendFragmentProcessorFactory<DitherEffect>::getInstance();
     }
@@ -42,16 +44,13 @@
     // All dither effects are equal
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE { return true; }
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
     typedef GrFragmentProcessor INHERITED;
 };
 
-void DitherEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
-    inout->fValidFlags = 0;
-    inout->fIsSingleComponent = false;
+void DitherEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
+    *validFlags = 0;
 }
 
 //////////////////////////////////////////////////////////////////////////////
diff --git a/src/gpu/effects/GrMatrixConvolutionEffect.h b/src/gpu/effects/GrMatrixConvolutionEffect.h
index 4d76f4c..4cc4296 100644
--- a/src/gpu/effects/GrMatrixConvolutionEffect.h
+++ b/src/gpu/effects/GrMatrixConvolutionEffect.h
@@ -52,6 +52,12 @@
 
     virtual ~GrMatrixConvolutionEffect();
 
+    virtual void getConstantColorComponents(GrColor* color,
+                                            uint32_t* validFlags) const SK_OVERRIDE {
+        // TODO: Try to do better?
+        *validFlags = 0;
+    }
+
     static const char* Name() { return "MatrixConvolution"; }
     const SkIRect& bounds() const { return fBounds; }
     const SkISize& kernelSize() const { return fKernelSize; }
@@ -79,12 +85,6 @@
 
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE {
-        // TODO: Try to do better?
-        inout->fValidFlags = 0;
-        inout->fIsSingleComponent = false;
-    }
-
     SkIRect         fBounds;
     SkISize         fKernelSize;
     float           fKernel[MAX_KERNEL_SIZE];
diff --git a/src/gpu/effects/GrOvalEffect.cpp b/src/gpu/effects/GrOvalEffect.cpp
index 2a04e16..10fd8a6 100644
--- a/src/gpu/effects/GrOvalEffect.cpp
+++ b/src/gpu/effects/GrOvalEffect.cpp
@@ -32,6 +32,8 @@
 
     typedef GLCircleEffect GLProcessor;
 
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE;
 
 private:
@@ -39,8 +41,6 @@
 
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     SkPoint             fCenter;
     SkScalar            fRadius;
     GrPrimitiveEdgeType    fEdgeType;
@@ -56,9 +56,8 @@
     return SkNEW_ARGS(CircleEffect, (edgeType, center, radius));
 }
 
-void CircleEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
-    inout->fValidFlags = 0;
-    inout->fIsSingleComponent = false;
+void CircleEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
+    *validFlags = 0;
 }
 
 const GrBackendFragmentProcessorFactory& CircleEffect::getFactory() const {
@@ -205,6 +204,8 @@
 
     typedef GLEllipseEffect GLProcessor;
 
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE;
 
 private:
@@ -212,8 +213,6 @@
 
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     SkPoint             fCenter;
     SkVector            fRadii;
     GrPrimitiveEdgeType    fEdgeType;
@@ -231,9 +230,8 @@
     return SkNEW_ARGS(EllipseEffect, (edgeType, center, rx, ry));
 }
 
-void EllipseEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
-    inout->fValidFlags = 0;
-    inout->fIsSingleComponent = false;
+void EllipseEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
+    *validFlags = 0;
 }
 
 const GrBackendFragmentProcessorFactory& EllipseEffect::getFactory() const {
diff --git a/src/gpu/effects/GrRRectEffect.cpp b/src/gpu/effects/GrRRectEffect.cpp
index 0af564c..f5131fe 100644
--- a/src/gpu/effects/GrRRectEffect.cpp
+++ b/src/gpu/effects/GrRRectEffect.cpp
@@ -59,6 +59,8 @@
 
     typedef GLCircularRRectEffect GLProcessor;
 
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE;
 
 private:
@@ -66,8 +68,6 @@
 
     virtual bool onIsEqual(const GrProcessor& other) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     SkRRect                fRRect;
     GrPrimitiveEdgeType    fEdgeType;
     uint32_t               fCircularCornerFlags;
@@ -86,9 +86,8 @@
     return SkNEW_ARGS(CircularRRectEffect, (edgeType, circularCornerFlags, rrect));
 }
 
-void CircularRRectEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
-    inout->fValidFlags = 0;
-    inout->fIsSingleComponent = false;
+void CircularRRectEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
+    *validFlags = 0;
 }
 
 const GrBackendFragmentProcessorFactory& CircularRRectEffect::getFactory() const {
@@ -400,6 +399,8 @@
 
     typedef GLEllipticalRRectEffect GLProcessor;
 
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE;
 
 private:
@@ -407,8 +408,6 @@
 
     virtual bool onIsEqual(const GrProcessor& other) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     SkRRect             fRRect;
     GrPrimitiveEdgeType    fEdgeType;
 
@@ -425,9 +424,8 @@
     return SkNEW_ARGS(EllipticalRRectEffect, (edgeType, rrect));
 }
 
-void EllipticalRRectEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
-    inout->fValidFlags = 0;
-    inout->fIsSingleComponent = false;
+void EllipticalRRectEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
+    *validFlags = 0;
 }
 
 const GrBackendFragmentProcessorFactory& EllipticalRRectEffect::getFactory() const {
diff --git a/src/gpu/effects/GrSimpleTextureEffect.cpp b/src/gpu/effects/GrSimpleTextureEffect.cpp
index a7707da..6743ddb 100644
--- a/src/gpu/effects/GrSimpleTextureEffect.cpp
+++ b/src/gpu/effects/GrSimpleTextureEffect.cpp
@@ -41,9 +41,8 @@
 
 ///////////////////////////////////////////////////////////////////////////////
 
-void GrSimpleTextureEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
-    this->updateInvariantOutputForModulation(inout);
-    inout->fIsSingleComponent = false;
+void GrSimpleTextureEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
+    this->updateConstantColorComponentsForModulation(color, validFlags);
 }
 
 const GrBackendFragmentProcessorFactory& GrSimpleTextureEffect::getFactory() const {
diff --git a/src/gpu/effects/GrSimpleTextureEffect.h b/src/gpu/effects/GrSimpleTextureEffect.h
index 88c5ca2..dc9cf85 100644
--- a/src/gpu/effects/GrSimpleTextureEffect.h
+++ b/src/gpu/effects/GrSimpleTextureEffect.h
@@ -49,6 +49,8 @@
 
     static const char* Name() { return "Texture"; }
 
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+
     typedef GrGLSimpleTextureEffect GLProcessor;
 
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE;
@@ -73,8 +75,6 @@
         return this->hasSameTextureParamsMatrixAndSourceCoords(ste);
     }
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
     typedef GrSingleTextureEffect INHERITED;
diff --git a/src/gpu/effects/GrSingleTextureEffect.h b/src/gpu/effects/GrSingleTextureEffect.h
index cba322e..6349ee7 100644
--- a/src/gpu/effects/GrSingleTextureEffect.h
+++ b/src/gpu/effects/GrSingleTextureEffect.h
@@ -44,15 +44,16 @@
     }
 
     /**
-     * Can be used as a helper to implement subclass onComputeInvariantOutput(). It assumes that
+     * Can be used as a helper to implement subclass getConstantColorComponents(). It assumes that
      * the subclass output color will be a modulation of the input color with a value read from the
      * texture.
      */
-    void updateInvariantOutputForModulation(InvariantOutput* inout) const {
-        if (inout->isOpaque() && GrPixelConfigIsOpaque(this->texture(0)->config())) {
-            inout->fValidFlags = kA_GrColorComponentFlag;
+    void updateConstantColorComponentsForModulation(GrColor* color, uint32_t* validFlags) const {
+        if ((*validFlags & kA_GrColorComponentFlag) && 0xFF == GrColorUnpackA(*color) &&
+            GrPixelConfigIsOpaque(this->texture(0)->config())) {
+            *validFlags = kA_GrColorComponentFlag;
         } else {
-            inout->fValidFlags = 0;
+            *validFlags = 0;
         }
     }
 
diff --git a/src/gpu/effects/GrTextureDomain.cpp b/src/gpu/effects/GrTextureDomain.cpp
index 90e3b41..1d3b37d 100644
--- a/src/gpu/effects/GrTextureDomain.cpp
+++ b/src/gpu/effects/GrTextureDomain.cpp
@@ -269,13 +269,12 @@
            this->fTextureDomain == s.fTextureDomain;
 }
 
-void GrTextureDomainEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
+void GrTextureDomainEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
     if (GrTextureDomain::kDecal_Mode == fTextureDomain.mode()) { // TODO: helper
-        inout->fValidFlags = 0;
+        *validFlags = 0;
     } else {
-        this->updateInvariantOutputForModulation(inout);
+        this->updateConstantColorComponentsForModulation(color, validFlags);
     }
-    inout->fIsSingleComponent = false;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
diff --git a/src/gpu/effects/GrTextureDomain.h b/src/gpu/effects/GrTextureDomain.h
index ec86847..5751bad 100644
--- a/src/gpu/effects/GrTextureDomain.h
+++ b/src/gpu/effects/GrTextureDomain.h
@@ -159,6 +159,7 @@
     typedef GrGLTextureDomainEffect GLProcessor;
 
     virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE;
+    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
 
     const GrTextureDomain& textureDomain() const { return fTextureDomain; }
 
@@ -175,8 +176,6 @@
 
     virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE;
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE;
-
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
 
     typedef GrSingleTextureEffect INHERITED;
diff --git a/src/gpu/effects/GrYUVtoRGBEffect.cpp b/src/gpu/effects/GrYUVtoRGBEffect.cpp
index cdbe654..436106c 100644
--- a/src/gpu/effects/GrYUVtoRGBEffect.cpp
+++ b/src/gpu/effects/GrYUVtoRGBEffect.cpp
@@ -28,6 +28,13 @@
         return GrTBackendFragmentProcessorFactory<YUVtoRGBEffect>::getInstance();
     }
 
+    virtual void getConstantColorComponents(GrColor* color,
+                                            uint32_t* validFlags) const SK_OVERRIDE {
+        // YUV is opaque
+        *color = 0xFF;
+        *validFlags = kA_GrColorComponentFlag;
+    }
+
     SkYUVColorSpace getColorSpace() const {
         return fColorSpace;
     }
@@ -110,13 +117,6 @@
                fColorSpace == s.getColorSpace();
     }
 
-    virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERRIDE {
-        // YUV is opaque
-        inout->fColor = 0xFF;
-        inout->fValidFlags = kA_GrColorComponentFlag;
-        inout->fIsSingleComponent = false;
-    }
-
     GrCoordTransform fCoordTransform;
     GrTextureAccess fYAccess;
     GrTextureAccess fUAccess;
diff --git a/tests/GpuColorFilterTest.cpp b/tests/GpuColorFilterTest.cpp
index a61fe0b..202756b 100644
--- a/tests/GpuColorFilterTest.cpp
+++ b/tests/GpuColorFilterTest.cpp
@@ -99,14 +99,12 @@
         const GetConstantComponentTestCase& test = filterTests[i];
         SkAutoTUnref<SkColorFilter> cf(SkColorFilter::CreateModeFilter(test.filterColor, test.filterMode));
         SkAutoTUnref<GrFragmentProcessor> effect(cf->asFragmentProcessor(grContext));
-        GrProcessor::InvariantOutput inout;
-        inout.fColor = test.inputColor;
-        inout.fValidFlags = test.inputComponents;
-        inout.fIsSingleComponent = false;
-        effect->computeInvariantOutput(&inout);
+        GrColor color = test.inputColor;
+        uint32_t components = test.inputComponents;
+        effect->getConstantColorComponents(&color, &components);
 
-        REPORTER_ASSERT(reporter, filterColor(inout.fColor, inout.fValidFlags) == test.outputColor);
-        REPORTER_ASSERT(reporter, test.outputComponents == inout.fValidFlags);
+        REPORTER_ASSERT(reporter, filterColor(color, components) == test.outputColor);
+        REPORTER_ASSERT(reporter, test.outputComponents == components);
     }
 }