diff --git a/gm/lighting.cpp b/gm/lighting.cpp
index f16e781..330e0ee 100644
--- a/gm/lighting.cpp
+++ b/gm/lighting.cpp
@@ -44,9 +44,10 @@
 
     void drawClippedBitmap(SkCanvas* canvas, const SkPaint& paint, int x, int y) {
         canvas->save();
-        canvas->clipRect(SkRect::MakeXYWH(SkIntToScalar(x), SkIntToScalar(y),
-            SkIntToScalar(fBitmap.width()), SkIntToScalar(fBitmap.height())));
-        canvas->drawBitmap(fBitmap, SkIntToScalar(x), SkIntToScalar(y), &paint);
+        canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
+        canvas->clipRect(SkRect::MakeWH(
+          SkIntToScalar(fBitmap.width()), SkIntToScalar(fBitmap.height())));
+        canvas->drawBitmap(fBitmap, 0, 0, &paint);
         canvas->restore();
     }
 
@@ -91,18 +92,24 @@
             const SkIRect* cr = (i == 0) ? NULL : &cropRect;
             paint.setImageFilter(SkLightingImageFilter::CreatePointLitDiffuse(pointLocation, white, surfaceScale, kd, NULL, cr))->unref();
             drawClippedBitmap(canvas, paint, 0, y);
+
             paint.setImageFilter(SkLightingImageFilter::CreateDistantLitDiffuse(distantDirection, white, surfaceScale, kd, NULL, cr))->unref();
             drawClippedBitmap(canvas, paint, 110, y);
+
             paint.setImageFilter(SkLightingImageFilter::CreateSpotLitDiffuse(spotLocation, spotTarget, spotExponent, cutoffAngle, white, surfaceScale, kd, NULL, cr))->unref();
             drawClippedBitmap(canvas, paint, 220, y);
 
             y += 110;
+
             paint.setImageFilter(SkLightingImageFilter::CreatePointLitSpecular(pointLocation, white, surfaceScale, ks, shininess, NULL, cr))->unref();
             drawClippedBitmap(canvas, paint, 0, y);
+
             paint.setImageFilter(SkLightingImageFilter::CreateDistantLitSpecular(distantDirection, white, surfaceScale, ks, shininess, NULL, cr))->unref();
             drawClippedBitmap(canvas, paint, 110, y);
+
             paint.setImageFilter(SkLightingImageFilter::CreateSpotLitSpecular(spotLocation, spotTarget, spotExponent, cutoffAngle, white, surfaceScale, ks, shininess, NULL, cr))->unref();
             drawClippedBitmap(canvas, paint, 220, y);
+
             y += 110;
         }
     }
diff --git a/include/core/SkImageFilter.h b/include/core/SkImageFilter.h
index 01b3e0b..7b9dd32 100644
--- a/include/core/SkImageFilter.h
+++ b/include/core/SkImageFilter.h
@@ -77,16 +77,18 @@
      *  caller to unref it.
      *
      *  The effect can assume its vertexCoords space maps 1-to-1 with texels
-     *  in the texture.  "offset" is the delta between the source and
-     *  destination rect's origins, when cropped processing is being performed.
+     *  in the texture.  "matrix" is a transformation to apply to filter
+     *  parameters before they are used in the effect. Note that this function
+     *  will be called with (NULL, NULL, SkMatrix::I()) to query for support,
+     *  so returning "true" indicates support for all possible matrices.
      */
-    virtual bool asNewEffect(GrEffectRef** effect, GrTexture*, const SkIPoint& offset) const;
+    virtual bool asNewEffect(GrEffectRef** effect, GrTexture*, const SkMatrix& matrix) const;
 
     /**
      *  Returns true if the filter can be processed on the GPU.  This is most
      *  often used for multi-pass effects, where intermediate results must be
      *  rendered to textures.  For single-pass effects, use asNewEffect().
-     *  The default implementation returns asNewEffect(NULL, NULL).
+     *  The default implementation returns asNewEffect(NULL, NULL, SkMatrix::I()).
      */
     virtual bool canFilterImageGPU() const;
 
@@ -159,9 +161,10 @@
     // Default impl copies src into dst and returns true
     virtual bool onFilterBounds(const SkIRect&, const SkMatrix&, SkIRect*);
 
-    // Sets rect to the intersection of rect and the crop rect. If there
-    // is no overlap, returns false and leaves rect unchanged.
-    bool applyCropRect(SkIRect* rect) const;
+    // Applies "matrix" to the crop rect, and sets "rect" to the intersection of
+    // "rect" and the transformed crop rect. If there is no overlap, returns
+    // false and leaves "rect" unchanged.
+    bool applyCropRect(SkIRect* rect, const SkMatrix& matrix) const;
 
 private:
     typedef SkFlattenable INHERITED;
diff --git a/include/effects/SkMagnifierImageFilter.h b/include/effects/SkMagnifierImageFilter.h
index b5cbd74..31b446f 100644
--- a/include/effects/SkMagnifierImageFilter.h
+++ b/include/effects/SkMagnifierImageFilter.h
@@ -17,7 +17,7 @@
     SkMagnifierImageFilter(SkRect srcRect, SkScalar inset);
 
 #if SK_SUPPORT_GPU
-    virtual bool asNewEffect(GrEffectRef** effect, GrTexture* texture, const SkIPoint& offset) const SK_OVERRIDE;
+    virtual bool asNewEffect(GrEffectRef** effect, GrTexture* texture, const SkMatrix& matrix) const SK_OVERRIDE;
 #endif
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkMagnifierImageFilter)
diff --git a/include/effects/SkMatrixConvolutionImageFilter.h b/include/effects/SkMatrixConvolutionImageFilter.h
index 71c8938..b2602fe 100644
--- a/include/effects/SkMatrixConvolutionImageFilter.h
+++ b/include/effects/SkMatrixConvolutionImageFilter.h
@@ -62,7 +62,7 @@
                                SkBitmap* result, SkIPoint* loc) SK_OVERRIDE;
 
 #if SK_SUPPORT_GPU
-    virtual bool asNewEffect(GrEffectRef** effect, GrTexture*, const SkIPoint& offset) const SK_OVERRIDE;
+    virtual bool asNewEffect(GrEffectRef** effect, GrTexture*, const SkMatrix& matrix) const SK_OVERRIDE;
 #endif
 
 private:
diff --git a/src/core/SkCanvas.cpp b/src/core/SkCanvas.cpp
index c59cd04..ff688f5 100644
--- a/src/core/SkCanvas.cpp
+++ b/src/core/SkCanvas.cpp
@@ -999,7 +999,9 @@
             SkDeviceImageFilterProxy proxy(dstDev);
             SkBitmap dst;
             const SkBitmap& src = srcDev->accessBitmap(false);
-            if (filter->filterImage(&proxy, src, *iter.fMatrix, &dst, &pos)) {
+            SkMatrix matrix = *iter.fMatrix;
+            matrix.postTranslate(SkIntToScalar(-x), SkIntToScalar(-y));
+            if (filter->filterImage(&proxy, src, matrix, &dst, &pos)) {
                 SkPaint tmpUnfiltered(*paint);
                 tmpUnfiltered.setImageFilter(NULL);
                 dstDev->drawSprite(iter, dst, pos.x(), pos.y(), tmpUnfiltered);
@@ -1034,8 +1036,9 @@
         if (filter && !iter.fDevice->canHandleImageFilter(filter)) {
             SkDeviceImageFilterProxy proxy(iter.fDevice);
             SkBitmap dst;
-            if (filter->filterImage(&proxy, bitmap, *iter.fMatrix,
-                                    &dst, &pos)) {
+            SkMatrix matrix = *iter.fMatrix;
+            matrix.postTranslate(SkIntToScalar(-x), SkIntToScalar(-y));
+            if (filter->filterImage(&proxy, bitmap, matrix, &dst, &pos)) {
                 SkPaint tmpUnfiltered(*paint);
                 tmpUnfiltered.setImageFilter(NULL);
                 iter.fDevice->drawSprite(iter, dst, pos.x(), pos.y(),
diff --git a/src/core/SkImageFilter.cpp b/src/core/SkImageFilter.cpp
index 222a029..502613b 100644
--- a/src/core/SkImageFilter.cpp
+++ b/src/core/SkImageFilter.cpp
@@ -102,7 +102,7 @@
 }
 
 bool SkImageFilter::canFilterImageGPU() const {
-    return this->asNewEffect(NULL, NULL, SkIPoint::Make(0, 0));
+    return this->asNewEffect(NULL, NULL, SkMatrix::I());
 }
 
 bool SkImageFilter::filterImageGPU(Proxy* proxy, const SkBitmap& src, const SkMatrix& ctm,
@@ -116,7 +116,7 @@
     GrTexture* srcTexture = input.getTexture();
     SkIRect bounds;
     src.getBounds(&bounds);
-    if (!this->applyCropRect(&bounds)) {
+    if (!this->applyCropRect(&bounds, ctm)) {
         return false;
     }
     SkRect srcRect = SkRect::Make(bounds);
@@ -135,7 +135,9 @@
     GrContext::AutoRenderTarget art(context, dst.texture()->asRenderTarget());
     GrContext::AutoClip acs(context, dstRect);
     GrEffectRef* effect;
-    this->asNewEffect(&effect, srcTexture, SkIPoint::Make(bounds.left(), bounds.top()));
+    SkMatrix matrix(ctm);
+    matrix.postTranslate(SkIntToScalar(-bounds.left()), SkIntToScalar(-bounds.top()));
+    this->asNewEffect(&effect, srcTexture, matrix);
     SkASSERT(effect);
     SkAutoUnref effectRef(effect);
     GrPaint paint;
@@ -152,8 +154,17 @@
 #endif
 }
 
-bool SkImageFilter::applyCropRect(SkIRect* rect) const {
-    return rect->intersect(fCropRect);
+bool SkImageFilter::applyCropRect(SkIRect* rect, const SkMatrix& matrix) const {
+    SkRect cropRect;
+    matrix.mapRect(&cropRect, SkRect::Make(fCropRect));
+    SkIRect cropRectI;
+    cropRect.roundOut(&cropRectI);
+    // If the original crop rect edges were unset, max out the new crop edges
+    if (fCropRect.fLeft == SK_MinS32) cropRectI.fLeft = SK_MinS32;
+    if (fCropRect.fTop == SK_MinS32) cropRectI.fTop = SK_MinS32;
+    if (fCropRect.fRight == SK_MaxS32) cropRectI.fRight = SK_MaxS32;
+    if (fCropRect.fBottom == SK_MaxS32) cropRectI.fBottom = SK_MaxS32;
+    return rect->intersect(cropRectI);
 }
 
 bool SkImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& ctm,
@@ -162,7 +173,7 @@
     return true;
 }
 
-bool SkImageFilter::asNewEffect(GrEffectRef**, GrTexture*, const SkIPoint& offset) const {
+bool SkImageFilter::asNewEffect(GrEffectRef**, GrTexture*, const SkMatrix&) const {
     return false;
 }
 
diff --git a/src/effects/SkBlurImageFilter.cpp b/src/effects/SkBlurImageFilter.cpp
index 4b2d3b8..3f97ddd 100644
--- a/src/effects/SkBlurImageFilter.cpp
+++ b/src/effects/SkBlurImageFilter.cpp
@@ -158,7 +158,7 @@
 
     SkIRect srcBounds, dstBounds;
     src.getBounds(&srcBounds);
-    if (!this->applyCropRect(&srcBounds)) {
+    if (!this->applyCropRect(&srcBounds, ctm)) {
         return false;
     }
 
@@ -216,7 +216,7 @@
     GrTexture* source = input.getTexture();
     SkIRect rect;
     src.getBounds(&rect);
-    if (!this->applyCropRect(&rect)) {
+    if (!this->applyCropRect(&rect, ctm)) {
         return false;
     }
     SkAutoTUnref<GrTexture> tex(SkGpuBlurUtils::GaussianBlur(source->getContext(),
diff --git a/src/effects/SkColorFilterImageFilter.cpp b/src/effects/SkColorFilterImageFilter.cpp
index 9c2c54e..16a36bb 100755
--- a/src/effects/SkColorFilterImageFilter.cpp
+++ b/src/effects/SkColorFilterImageFilter.cpp
@@ -107,7 +107,7 @@
 
     SkIRect bounds;
     src.getBounds(&bounds);
-    if (!this->applyCropRect(&bounds)) {
+    if (!this->applyCropRect(&bounds, matrix)) {
         return false;
     }
 
diff --git a/src/effects/SkLightingImageFilter.cpp b/src/effects/SkLightingImageFilter.cpp
index ccb1dc5..e71df66 100644
--- a/src/effects/SkLightingImageFilter.cpp
+++ b/src/effects/SkLightingImageFilter.cpp
@@ -265,7 +265,7 @@
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDiffuseLightingImageFilter)
 
 #if SK_SUPPORT_GPU
-    virtual bool asNewEffect(GrEffectRef** effect, GrTexture*, const SkIPoint& offset) const SK_OVERRIDE;
+    virtual bool asNewEffect(GrEffectRef** effect, GrTexture*, const SkMatrix& matrix) const SK_OVERRIDE;
 #endif
     SkScalar kd() const { return fKD; }
 
@@ -287,7 +287,7 @@
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkSpecularLightingImageFilter)
 
 #if SK_SUPPORT_GPU
-    virtual bool asNewEffect(GrEffectRef** effect, GrTexture*, const SkIPoint& offset) const SK_OVERRIDE;
+    virtual bool asNewEffect(GrEffectRef** effect, GrTexture*, const SkMatrix& matrix) const SK_OVERRIDE;
 #endif
 
     SkScalar ks() const { return fKS; }
@@ -309,12 +309,12 @@
 
 class GrLightingEffect : public GrSingleTextureEffect {
 public:
-    GrLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale, const SkIPoint& offset);
+    GrLightingEffect(GrTexture* texture, const SkLight* light, SkScalar surfaceScale, const SkMatrix& matrix);
     virtual ~GrLightingEffect();
 
     const SkLight* light() const { return fLight; }
     SkScalar surfaceScale() const { return fSurfaceScale; }
-    const SkIPoint& offset() const { return fOffset; }
+    const SkMatrix& filterMatrix() const { return fFilterMatrix; }
 
     virtual void getConstantColorComponents(GrColor* color,
                                             uint32_t* validFlags) const SK_OVERRIDE {
@@ -329,7 +329,7 @@
     typedef GrSingleTextureEffect INHERITED;
     const SkLight* fLight;
     SkScalar fSurfaceScale;
-    SkIPoint fOffset;
+    SkMatrix fFilterMatrix;
 };
 
 class GrDiffuseLightingEffect : public GrLightingEffect {
@@ -337,12 +337,12 @@
     static GrEffectRef* Create(GrTexture* texture,
                                const SkLight* light,
                                SkScalar surfaceScale,
-                               const SkIPoint& offset,
+                               const SkMatrix& matrix,
                                SkScalar kd) {
         AutoEffectUnref effect(SkNEW_ARGS(GrDiffuseLightingEffect, (texture,
                                                                     light,
                                                                     surfaceScale,
-                                                                    offset,
+                                                                    matrix,
                                                                     kd)));
         return CreateEffectRef(effect);
     }
@@ -360,7 +360,7 @@
     GrDiffuseLightingEffect(GrTexture* texture,
                             const SkLight* light,
                             SkScalar surfaceScale,
-                            const SkIPoint& offset,
+                            const SkMatrix& matrix,
                             SkScalar kd);
 
     GR_DECLARE_EFFECT_TEST;
@@ -373,13 +373,13 @@
     static GrEffectRef* Create(GrTexture* texture,
                                const SkLight* light,
                                SkScalar surfaceScale,
-                               const SkIPoint& offset,
+                               const SkMatrix& matrix,
                                SkScalar ks,
                                SkScalar shininess) {
         AutoEffectUnref effect(SkNEW_ARGS(GrSpecularLightingEffect, (texture,
                                                                      light,
                                                                      surfaceScale,
-                                                                     offset,
+                                                                     matrix,
                                                                      ks,
                                                                      shininess)));
         return CreateEffectRef(effect);
@@ -398,7 +398,7 @@
     GrSpecularLightingEffect(GrTexture* texture,
                              const SkLight* light,
                              SkScalar surfaceScale,
-                             const SkIPoint& offset,
+                             const SkMatrix& matrix,
                              SkScalar ks,
                              SkScalar shininess);
 
@@ -434,8 +434,7 @@
     // This is called from GrGLLightingEffect's setData(). Subclasses of GrGLLight must call
     // INHERITED::setData().
     virtual void setData(const GrGLUniformManager&,
-                         const SkLight* light,
-                         const SkIPoint& offset) const;
+                         const SkLight* light) const;
 
 protected:
     /**
@@ -456,8 +455,7 @@
 public:
     virtual ~GrGLDistantLight() {}
     virtual void setData(const GrGLUniformManager&,
-                         const SkLight* light,
-                         const SkIPoint& offset) const SK_OVERRIDE;
+                         const SkLight* light) const SK_OVERRIDE;
     virtual void emitSurfaceToLight(GrGLShaderBuilder*, const char* z) SK_OVERRIDE;
 
 private:
@@ -471,8 +469,7 @@
 public:
     virtual ~GrGLPointLight() {}
     virtual void setData(const GrGLUniformManager&,
-                         const SkLight* light,
-                         const SkIPoint& offset) const SK_OVERRIDE;
+                         const SkLight* light) const SK_OVERRIDE;
     virtual void emitSurfaceToLight(GrGLShaderBuilder*, const char* z) SK_OVERRIDE;
 
 private:
@@ -486,8 +483,7 @@
 public:
     virtual ~GrGLSpotLight() {}
     virtual void setData(const GrGLUniformManager&,
-                         const SkLight* light,
-                         const SkIPoint& offset) const SK_OVERRIDE;
+                         const SkLight* light) const SK_OVERRIDE;
     virtual void emitSurfaceToLight(GrGLShaderBuilder*, const char* z) SK_OVERRIDE;
     virtual void emitLightColor(GrGLShaderBuilder*, const char *surfaceToLight) SK_OVERRIDE;
 
@@ -529,12 +525,15 @@
     }
     // Called to know whether the generated GrGLLight will require access to the fragment position.
     virtual bool requiresFragmentPosition() const = 0;
+    virtual SkLight* transform(const SkMatrix& matrix) const = 0;
 
 protected:
     SkLight(SkColor color)
       : fColor(SkIntToScalar(SkColorGetR(color)),
                SkIntToScalar(SkColorGetG(color)),
                SkIntToScalar(SkColorGetB(color))) {}
+    SkLight(const SkPoint3& color)
+      : fColor(color) {}
     SkLight(SkFlattenableReadBuffer& buffer)
       : INHERITED(buffer) {
         fColor = readPoint3(buffer);
@@ -588,9 +587,15 @@
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDistantLight)
 
 protected:
+    SkDistantLight(const SkPoint3& direction, const SkPoint3& color)
+      : INHERITED(color), fDirection(direction) {
+    }
     SkDistantLight(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {
         fDirection = readPoint3(buffer);
     }
+    virtual SkLight* transform(const SkMatrix& matrix) const {
+        return new SkDistantLight(direction(), color());
+    }
     virtual void flatten(SkFlattenableWriteBuffer& buffer) const {
         INHERITED::flatten(buffer);
         writePoint3(fDirection, buffer);
@@ -635,6 +640,12 @@
         return INHERITED::isEqual(other) &&
                fLocation == o.fLocation;
     }
+    virtual SkLight* transform(const SkMatrix& matrix) const {
+        SkPoint location2 = SkPoint::Make(fLocation.fX, fLocation.fY);
+        matrix.mapPoints(&location2, 1);
+        SkPoint3 location(location2.fX, location2.fY, fLocation.fZ);
+        return new SkPointLight(location, color());
+    }
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPointLight)
 
@@ -642,6 +653,8 @@
     SkPointLight(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {
         fLocation = readPoint3(buffer);
     }
+    SkPointLight(const SkPoint3& location, const SkPoint3& color)
+     : INHERITED(color), fLocation(location) {}
     virtual void flatten(SkFlattenableWriteBuffer& buffer) const {
         INHERITED::flatten(buffer);
         writePoint3(fLocation, buffer);
@@ -670,6 +683,16 @@
        fConeScale = SkScalarInvert(antiAliasThreshold);
     }
 
+    virtual SkLight* transform(const SkMatrix& matrix) const {
+        SkPoint location2 = SkPoint::Make(fLocation.fX, fLocation.fY);
+        matrix.mapPoints(&location2, 1);
+        SkPoint3 location(location2.fX, location2.fY, fLocation.fZ);
+        SkPoint target2 = SkPoint::Make(fTarget.fX, fTarget.fY);
+        matrix.mapPoints(&target2, 1);
+        SkPoint3 target(target2.fX, target2.fY, fTarget.fZ);
+        return new SkSpotLight(location, target, fSpecularExponent, fCosOuterConeAngle, fCosInnerConeAngle, fConeScale, fS, color());
+    }
+
     SkPoint3 surfaceToLight(int x, int y, int z, SkScalar surfaceScale) const {
         SkPoint3 direction(fLocation.fX - SkIntToScalar(x),
                            fLocation.fY - SkIntToScalar(y),
@@ -719,6 +742,17 @@
         fConeScale = buffer.readScalar();
         fS = readPoint3(buffer);
     }
+    SkSpotLight(const SkPoint3& location, const SkPoint3& target, SkScalar specularExponent, SkScalar cosOuterConeAngle, SkScalar cosInnerConeAngle, SkScalar coneScale, const SkPoint3& s, const SkPoint3& color)
+     : INHERITED(color),
+       fLocation(location),
+       fTarget(target),
+       fSpecularExponent(specularExponent),
+       fCosOuterConeAngle(cosOuterConeAngle),
+       fCosInnerConeAngle(cosInnerConeAngle),
+       fConeScale(coneScale),
+       fS(s)
+    {
+    }
     virtual void flatten(SkFlattenableWriteBuffer& buffer) const {
         INHERITED::flatten(buffer);
         writePoint3(fLocation, buffer);
@@ -857,7 +891,7 @@
 
 bool SkDiffuseLightingImageFilter::onFilterImage(Proxy*,
                                                  const SkBitmap& src,
-                                                 const SkMatrix&,
+                                                 const SkMatrix& ctm,
                                                  SkBitmap* dst,
                                                  SkIPoint* offset) {
     if (src.config() != SkBitmap::kARGB_8888_Config) {
@@ -870,7 +904,7 @@
 
     SkIRect bounds;
     src.getBounds(&bounds);
-    if (!this->applyCropRect(&bounds)) {
+    if (!this->applyCropRect(&bounds, ctm)) {
         return false;
     }
 
@@ -881,16 +915,18 @@
     dst->setConfig(src.config(), bounds.width(), bounds.height());
     dst->allocPixels();
 
+    SkAutoTUnref<SkLight> transformedLight(light()->transform(ctm));
+
     DiffuseLightingType lightingType(fKD);
-    switch (light()->type()) {
+    switch (transformedLight->type()) {
         case SkLight::kDistant_LightType:
-            lightBitmap<DiffuseLightingType, SkDistantLight>(lightingType, light(), src, dst, surfaceScale(), bounds);
+            lightBitmap<DiffuseLightingType, SkDistantLight>(lightingType, transformedLight, src, dst, surfaceScale(), bounds);
             break;
         case SkLight::kPoint_LightType:
-            lightBitmap<DiffuseLightingType, SkPointLight>(lightingType, light(), src, dst, surfaceScale(), bounds);
+            lightBitmap<DiffuseLightingType, SkPointLight>(lightingType, transformedLight, src, dst, surfaceScale(), bounds);
             break;
         case SkLight::kSpot_LightType:
-            lightBitmap<DiffuseLightingType, SkSpotLight>(lightingType, light(), src, dst, surfaceScale(), bounds);
+            lightBitmap<DiffuseLightingType, SkSpotLight>(lightingType, transformedLight, src, dst, surfaceScale(), bounds);
             break;
     }
 
@@ -900,10 +936,10 @@
 }
 
 #if SK_SUPPORT_GPU
-bool SkDiffuseLightingImageFilter::asNewEffect(GrEffectRef** effect, GrTexture* texture, const SkIPoint& offset) const {
+bool SkDiffuseLightingImageFilter::asNewEffect(GrEffectRef** effect, GrTexture* texture, const SkMatrix& matrix) const {
     if (effect) {
         SkScalar scale = SkScalarMul(surfaceScale(), SkIntToScalar(255));
-        *effect = GrDiffuseLightingEffect::Create(texture, light(), scale, offset, kd());
+        *effect = GrDiffuseLightingEffect::Create(texture, light(), scale, matrix, kd());
     }
     return true;
 }
@@ -933,7 +969,7 @@
 
 bool SkSpecularLightingImageFilter::onFilterImage(Proxy*,
                                                   const SkBitmap& src,
-                                                  const SkMatrix&,
+                                                  const SkMatrix& ctm,
                                                   SkBitmap* dst,
                                                   SkIPoint* offset) {
     if (src.config() != SkBitmap::kARGB_8888_Config) {
@@ -946,7 +982,7 @@
 
     SkIRect bounds;
     src.getBounds(&bounds);
-    if (!this->applyCropRect(&bounds)) {
+    if (!this->applyCropRect(&bounds, ctm)) {
         return false;
     }
 
@@ -958,15 +994,16 @@
     dst->allocPixels();
 
     SpecularLightingType lightingType(fKS, fShininess);
-    switch (light()->type()) {
+    SkAutoTUnref<SkLight> transformedLight(light()->transform(ctm));
+    switch (transformedLight->type()) {
         case SkLight::kDistant_LightType:
-            lightBitmap<SpecularLightingType, SkDistantLight>(lightingType, light(), src, dst, surfaceScale(), bounds);
+            lightBitmap<SpecularLightingType, SkDistantLight>(lightingType, transformedLight, src, dst, surfaceScale(), bounds);
             break;
         case SkLight::kPoint_LightType:
-            lightBitmap<SpecularLightingType, SkPointLight>(lightingType, light(), src, dst, surfaceScale(), bounds);
+            lightBitmap<SpecularLightingType, SkPointLight>(lightingType, transformedLight, src, dst, surfaceScale(), bounds);
             break;
         case SkLight::kSpot_LightType:
-            lightBitmap<SpecularLightingType, SkSpotLight>(lightingType, light(), src, dst, surfaceScale(), bounds);
+            lightBitmap<SpecularLightingType, SkSpotLight>(lightingType, transformedLight, src, dst, surfaceScale(), bounds);
             break;
     }
     offset->fX += bounds.left();
@@ -975,10 +1012,10 @@
 }
 
 #if SK_SUPPORT_GPU
-bool SkSpecularLightingImageFilter::asNewEffect(GrEffectRef** effect, GrTexture* texture, const SkIPoint& offset) const {
+bool SkSpecularLightingImageFilter::asNewEffect(GrEffectRef** effect, GrTexture* texture, const SkMatrix& matrix) const {
     if (effect) {
         SkScalar scale = SkScalarMul(surfaceScale(), SkIntToScalar(255));
-        *effect = GrSpecularLightingEffect::Create(texture, light(), scale, offset, ks(), shininess());
+        *effect = GrSpecularLightingEffect::Create(texture, light(), scale, matrix, ks(), shininess());
     }
     return true;
 }
@@ -1087,11 +1124,11 @@
 GrLightingEffect::GrLightingEffect(GrTexture* texture,
                                    const SkLight* light,
                                    SkScalar surfaceScale,
-                                   const SkIPoint& offset)
+                                   const SkMatrix& matrix)
     : INHERITED(texture, MakeDivByTextureWHMatrix(texture))
     , fLight(light)
     , fSurfaceScale(surfaceScale)
-    , fOffset(offset) {
+    , fFilterMatrix(matrix) {
     fLight->ref();
     if (light->requiresFragmentPosition()) {
         this->setWillReadFragmentPosition();
@@ -1114,9 +1151,9 @@
 GrDiffuseLightingEffect::GrDiffuseLightingEffect(GrTexture* texture,
                                                  const SkLight* light,
                                                  SkScalar surfaceScale,
-                                                 const SkIPoint& offset,
+                                                 const SkMatrix& matrix,
                                                  SkScalar kd)
-    : INHERITED(texture, light, surfaceScale, offset), fKD(kd) {
+    : INHERITED(texture, light, surfaceScale, matrix), fKD(kd) {
 }
 
 const GrBackendEffectFactory& GrDiffuseLightingEffect::getFactory() const {
@@ -1138,9 +1175,12 @@
     SkScalar surfaceScale = random->nextSScalar1();
     SkScalar kd = random->nextUScalar1();
     SkAutoTUnref<SkLight> light(create_random_light(random));
-    SkIPoint offset = SkIPoint::Make(random->nextS(), random->nextS());
+    SkMatrix matrix;
+    for (int i = 0; i < 9; i++) {
+        matrix[i] = random->nextUScalar1();
+    }
     return GrDiffuseLightingEffect::Create(textures[GrEffectUnitTest::kAlphaTextureIdx],
-                                           light, surfaceScale, offset, kd);
+                                           light, surfaceScale, matrix, kd);
 }
 
 
@@ -1278,7 +1318,8 @@
     float ySign = texture->origin() == kTopLeft_GrSurfaceOrigin ? -1.0f : 1.0f;
     uman.set2f(fImageIncrementUni, 1.0f / texture->width(), ySign / texture->height());
     uman.set1f(fSurfaceScaleUni, lighting.surfaceScale());
-    fLight->setData(uman, lighting.light(), lighting.offset());
+    SkAutoTUnref<SkLight> transformedLight(lighting.light()->transform(lighting.filterMatrix()));
+    fLight->setData(uman, transformedLight);
     fEffectMatrix.setData(uman,
                           lighting.getMatrix(),
                           drawEffect,
@@ -1330,10 +1371,10 @@
 GrSpecularLightingEffect::GrSpecularLightingEffect(GrTexture* texture,
                                                    const SkLight* light,
                                                    SkScalar surfaceScale,
-                                                   const SkIPoint& offset,
+                                                   const SkMatrix& matrix,
                                                    SkScalar ks,
                                                    SkScalar shininess)
-    : INHERITED(texture, light, surfaceScale, offset),
+    : INHERITED(texture, light, surfaceScale, matrix),
       fKS(ks),
       fShininess(shininess) {
 }
@@ -1359,9 +1400,12 @@
     SkScalar ks = random->nextUScalar1();
     SkScalar shininess = random->nextUScalar1();
     SkAutoTUnref<SkLight> light(create_random_light(random));
-    SkIPoint offset = SkIPoint::Make(random->nextS(), random->nextS());
+    SkMatrix matrix;
+    for (int i = 0; i < 9; i++) {
+        matrix[i] = random->nextUScalar1();
+    }
     return GrSpecularLightingEffect::Create(textures[GrEffectUnitTest::kAlphaTextureIdx],
-                                            light, surfaceScale, offset, ks, shininess);
+                                            light, surfaceScale, matrix, ks, shininess);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -1419,17 +1463,15 @@
 }
 
 void GrGLLight::setData(const GrGLUniformManager& uman,
-                        const SkLight* light,
-                        const SkIPoint&) const {
+                        const SkLight* light) const {
     setUniformPoint3(uman, fColorUni, light->color() * SkScalarInvert(SkIntToScalar(255)));
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 void GrGLDistantLight::setData(const GrGLUniformManager& uman,
-                               const SkLight* light,
-                               const SkIPoint& offset) const {
-    INHERITED::setData(uman, light, offset);
+                               const SkLight* light) const {
+    INHERITED::setData(uman, light);
     SkASSERT(light->type() == SkLight::kDistant_LightType);
     const SkDistantLight* distantLight = static_cast<const SkDistantLight*>(light);
     setUniformNormal3(uman, fDirectionUni, distantLight->direction());
@@ -1445,15 +1487,11 @@
 ///////////////////////////////////////////////////////////////////////////////
 
 void GrGLPointLight::setData(const GrGLUniformManager& uman,
-                             const SkLight* light,
-                             const SkIPoint& offset) const {
-    INHERITED::setData(uman, light, offset);
+                             const SkLight* light) const {
+    INHERITED::setData(uman, light);
     SkASSERT(light->type() == SkLight::kPoint_LightType);
     const SkPointLight* pointLight = static_cast<const SkPointLight*>(light);
-    SkPoint3 location = pointLight->location();
-    location.fX -= offset.fX;
-    location.fY -= offset.fY;
-    setUniformPoint3(uman, fLocationUni, location);
+    setUniformPoint3(uman, fLocationUni, pointLight->location());
 }
 
 void GrGLPointLight::emitSurfaceToLight(GrGLShaderBuilder* builder, const char* z) {
@@ -1466,15 +1504,11 @@
 ///////////////////////////////////////////////////////////////////////////////
 
 void GrGLSpotLight::setData(const GrGLUniformManager& uman,
-                            const SkLight* light,
-                            const SkIPoint& offset) const {
-    INHERITED::setData(uman, light, offset);
+                            const SkLight* light) const {
+    INHERITED::setData(uman, light);
     SkASSERT(light->type() == SkLight::kSpot_LightType);
     const SkSpotLight* spotLight = static_cast<const SkSpotLight *>(light);
-    SkPoint3 location = spotLight->location();
-    location.fX -= offset.fX;
-    location.fY -= offset.fY;
-    setUniformPoint3(uman, fLocationUni, location);
+    setUniformPoint3(uman, fLocationUni, spotLight->location());
     uman.set1f(fExponentUni, spotLight->specularExponent());
     uman.set1f(fCosInnerConeAngleUni, spotLight->cosInnerConeAngle());
     uman.set1f(fCosOuterConeAngleUni, spotLight->cosOuterConeAngle());
diff --git a/src/effects/SkMagnifierImageFilter.cpp b/src/effects/SkMagnifierImageFilter.cpp
index a747620..aa91b1c 100644
--- a/src/effects/SkMagnifierImageFilter.cpp
+++ b/src/effects/SkMagnifierImageFilter.cpp
@@ -215,7 +215,7 @@
                                  SkIntToScalar(width), SkIntToScalar(height)),
                 inset));
     GrEffectRef* effect;
-    filter->asNewEffect(&effect, textures[0], SkIPoint::Make(0, 0));
+    filter->asNewEffect(&effect, textures[0], SkMatrix::I());
     SkASSERT(NULL != effect);
     return effect;
 }
@@ -261,7 +261,7 @@
 }
 
 #if SK_SUPPORT_GPU
-bool SkMagnifierImageFilter::asNewEffect(GrEffectRef** effect, GrTexture* texture, const SkIPoint&) const {
+bool SkMagnifierImageFilter::asNewEffect(GrEffectRef** effect, GrTexture* texture, const SkMatrix&) const {
     if (effect) {
         *effect = GrMagnifierEffect::Create(texture,
                                             fSrcRect.x() / texture->width(),
diff --git a/src/effects/SkMatrixConvolutionImageFilter.cpp b/src/effects/SkMatrixConvolutionImageFilter.cpp
index 1f60a49..37ca2fa 100644
--- a/src/effects/SkMatrixConvolutionImageFilter.cpp
+++ b/src/effects/SkMatrixConvolutionImageFilter.cpp
@@ -561,7 +561,7 @@
 
 bool SkMatrixConvolutionImageFilter::asNewEffect(GrEffectRef** effect,
                                                  GrTexture* texture,
-                                                 const SkIPoint&) const {
+                                                 const SkMatrix&) const {
     if (!effect) {
         return fKernelSize.width() * fKernelSize.height() <= MAX_KERNEL_SIZE;
     }
diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index ccb8311..f77fdf7 100644
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -1476,7 +1476,9 @@
     SkBitmap filteredBitmap;
 
     if (NULL != filter) {
-        if (filter_texture(this, fContext, texture, filter, w, h, SkMatrix::I(), &filteredBitmap,
+        SkMatrix matrix(*draw.fMatrix);
+        matrix.postTranslate(SkIntToScalar(-left), SkIntToScalar(-top));
+        if (filter_texture(this, fContext, texture, filter, w, h, matrix, &filteredBitmap,
                            &offset)) {
             texture = (GrTexture*) filteredBitmap.getTexture();
             w = filteredBitmap.width();
@@ -1563,7 +1565,9 @@
 
     if (NULL != filter) {
         SkIPoint offset = SkIPoint::Make(0, 0);
-        if (filter_texture(this, fContext, devTex, filter, w, h, SkMatrix::I(), &filteredBitmap,
+        SkMatrix matrix(*draw.fMatrix);
+        matrix.postTranslate(SkIntToScalar(-x), SkIntToScalar(-y));
+        if (filter_texture(this, fContext, devTex, filter, w, h, matrix, &filteredBitmap,
                            &offset)) {
             devTex = filteredBitmap.getTexture();
             w = filteredBitmap.width();