diff --git a/gpu/GrEffect.h b/gpu/GrEffect.h
index 7875270..5fed532 100644
--- a/gpu/GrEffect.h
+++ b/gpu/GrEffect.h
@@ -95,6 +95,9 @@
      */
     virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const = 0;
 
+    /** Will this effect read the source color value? */
+    bool willUseInputColor() const { return fWillUseInputColor; }
+
     /** 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,
         GrTBackendEffectFactory. It is templated on the subclass of GrEffect. The subclass must have
@@ -221,6 +224,7 @@
     GrEffect()
         : fWillReadDstColor(false)
         , fWillReadFragmentPosition(false)
+        , fWillUseInputColor(true)
         , fHasVertexCode(false)
         , fEffectRef(NULL) {}
 
@@ -287,6 +291,13 @@
      */
     void setWillReadFragmentPosition() { fWillReadFragmentPosition = true; }
 
+    /**
+     * If the effect will generate a result that does not depend on the input color value then it must
+     * call this function from its constructor. Otherwise, when its generated backend-specific code
+     * might fail during variable binding due to unused variables.
+     */
+    void setWillNotUseInputColor() { fWillUseInputColor = false; }
+
 private:
     bool isEqual(const GrEffect& other) const {
         if (&this->getFactory() != &other.getFactory()) {
@@ -321,6 +332,7 @@
     SkSTArray<kMaxVertexAttribs, GrSLType, true> fVertexAttribTypes;
     bool                                         fWillReadDstColor;
     bool                                         fWillReadFragmentPosition;
+    bool                                         fWillUseInputColor;
     bool                                         fHasVertexCode;
     GrEffectRef*                                 fEffectRef;
 
diff --git a/gpu/GrPaint.h b/gpu/GrPaint.h
index 25557f9..50a32a5 100644
--- a/gpu/GrPaint.h
+++ b/gpu/GrPaint.h
@@ -85,31 +85,13 @@
     bool isDither() const { return fDither; }
 
     /**
-     * Enables a SkXfermode::Mode-based color filter applied to the primitive color. The constant
-     * color passed to this function is considered the "src" color and the primitive's color is
-     * considered the "dst" color. Defaults to kDst_Mode which equates to simply passing through
-     * the primitive color unmodified.
-     */
-    void setXfermodeColorFilter(SkXfermode::Mode mode, GrColor color) {
-        fColorFilterColor = color;
-        fColorFilterXfermode = mode;
-    }
-    SkXfermode::Mode getColorFilterMode() const { return fColorFilterXfermode; }
-    GrColor getColorFilterColor() const { return fColorFilterColor; }
-
-    /**
-     * Disables the SkXfermode::Mode color filter.
-     */
-    void resetColorFilter() {
-        fColorFilterXfermode = SkXfermode::kDst_Mode;
-        fColorFilterColor = GrColorPackRGBA(0xff, 0xff, 0xff, 0xff);
-    }
-
-    /**
      * Appends an additional color effect to the color computation.
      */
     const GrEffectRef* addColorEffect(const GrEffectRef* effect, int attr0 = -1, int attr1 = -1) {
         SkASSERT(NULL != effect);
+        if (!(*effect)->willUseInputColor()) {
+            fColorStages.reset();
+        }
         SkNEW_APPEND_TO_TARRAY(&fColorStages, GrEffectStage, (effect, attr0, attr1));
         return effect;
     }
@@ -119,6 +101,9 @@
      */
     const GrEffectRef* addCoverageEffect(const GrEffectRef* effect, int attr0 = -1, int attr1 = -1) {
         SkASSERT(NULL != effect);
+        if (!(*effect)->willUseInputColor()) {
+            fCoverageStages.reset();
+        }
         SkNEW_APPEND_TO_TARRAY(&fCoverageStages, GrEffectStage, (effect, attr0, attr1));
         return effect;
     }
@@ -153,9 +138,6 @@
         fColor = paint.fColor;
         fCoverage = paint.fCoverage;
 
-        fColorFilterColor = paint.fColorFilterColor;
-        fColorFilterXfermode = paint.fColorFilterXfermode;
-
         fColorStages = paint.fColorStages;
         fCoverageStages = paint.fCoverageStages;
 
@@ -171,7 +153,6 @@
         this->resetColor();
         this->resetCoverage();
         this->resetStages();
-        this->resetColorFilter();
     }
 
     /**
@@ -245,9 +226,6 @@
     GrColor                     fColor;
     uint8_t                     fCoverage;
 
-    GrColor                     fColorFilterColor;
-    SkXfermode::Mode            fColorFilterXfermode;
-
     void resetBlend() {
         fSrcBlendCoeff = kOne_GrBlendCoeff;
         fDstBlendCoeff = kZero_GrBlendCoeff;