Apply the CTM to filter parameters for 4 pixel-moving filters.

src/effects/SkBlurImageFilter.cpp

 /*
  * Copyright 2011 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmap.h"
 #include "SkBlurImageFilter.h"
 #include "SkColorPriv.h"
@@ skipping 147 matching lines @@
         return false;
     }
 
     dst->setConfig(src.config(), srcBounds.width(), srcBounds.height());
     dst->getBounds(&dstBounds);
     dst->allocPixels();
     if (!dst->getPixels()) {
         return false;
     }
 
+    SkVector sigma, localSigma = SkVector::Make(fSigma.width(), fSigma.height());
+    ctm.mapVectors(&sigma, &localSigma, 1);
+
     int kernelSizeX, kernelSizeX3, lowOffsetX, highOffsetX;
     int kernelSizeY, kernelSizeY3, lowOffsetY, highOffsetY;
-    getBox3Params(fSigma.width(), &kernelSizeX, &kernelSizeX3, &lowOffsetX, &highOffsetX);
-    getBox3Params(fSigma.height(), &kernelSizeY, &kernelSizeY3, &lowOffsetY, &highOffsetY);
+    getBox3Params(sigma.x(), &kernelSizeX, &kernelSizeX3, &lowOffsetX, &highOffsetX);
+    getBox3Params(sigma.y(), &kernelSizeY, &kernelSizeY3, &lowOffsetY, &highOffsetY);
 
     if (kernelSizeX < 0 || kernelSizeY < 0) {
         return false;
     }
 
     if (kernelSizeX == 0 && kernelSizeY == 0) {
         src.copyTo(dst, dst->config());
         offset->fX = srcBounds.fLeft;
         offset->fY = srcBounds.fTop;
         return true;
@@ skipping 46 matching lines @@
     SkBitmap input;
     if (!SkImageFilterUtils::GetInputResultGPU(getInput(0), proxy, src, ctm, &input, offset)) {
         return false;
     }
     GrTexture* source = input.getTexture();
     SkIRect rect;
     src.getBounds(&rect);
     if (!this->applyCropRect(&rect, ctm)) {
         return false;
     }
+    SkVector sigma, localSigma = SkVector::Make(fSigma.width(), fSigma.height());
+    ctm.mapVectors(&sigma, &localSigma, 1);
     SkAutoTUnref<GrTexture> tex(SkGpuBlurUtils::GaussianBlur(source->getContext(),
                                                              source,
                                                              false,
                                                              SkRect::Make(rect),
                                                              true,
-                                                             fSigma.width(),
-                                                             fSigma.height()));
+                                                             sigma.x(),
+                                                             sigma.y()));
     offset->fX = rect.fLeft;
     offset->fY = rect.fTop;
     return SkImageFilterUtils::WrapTexture(tex, rect.width(), rect.height(), result);
 #else
     SkDEBUGFAIL("Should not call in GPU-less build");
     return false;
 #endif
 }