Fix CTM scaling and clipping of SkRectShaderImageFilter.

gm/imagefiltersclipped.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gm.h"
 #include "SkColor.h"
 #include "SkBitmapSource.h"
 #include "SkBlurImageFilter.h"
 #include "SkDisplacementMapEffect.h"
 #include "SkDropShadowImageFilter.h"
 #include "SkGradientShader.h"
 #include "SkMorphologyImageFilter.h"
 #include "SkOffsetImageFilter.h"
+#include "SkPerlinNoiseShader.h"
+#include "SkRectShaderImageFilter.h"
 #include "SkResizeImageFilter.h"
 #include "SkScalar.h"
 
 #define RESIZE_FACTOR_X SkIntToScalar(2)
 #define RESIZE_FACTOR_Y SkIntToScalar(5)
 
 namespace skiagm {
 
 class ImageFiltersClippedGM : public GM {
 public:
@@ skipping 53 matching lines @@
     virtual void onDraw(SkCanvas* canvas) {
         if (!fInitialized) {
             this->make_checkerboard();
             this->make_gradient_circle(64, 64);
             fInitialized = true;
         }
         canvas->clear(0x00000000);
 
         SkAutoTUnref<SkImageFilter> gradient(new SkBitmapSource(fGradientCircle));
         SkAutoTUnref<SkImageFilter> checkerboard(new SkBitmapSource(fCheckerboard));
+        SkAutoTUnref<SkShader> noise(SkPerlinNoiseShader::CreateFractalNoise(
+            SkDoubleToScalar(0.1), SkDoubleToScalar(0.05), 1, 0));
 
         SkImageFilter* filters[] = {
             new SkBlurImageFilter(SkIntToScalar(12), SkIntToScalar(12)),
             new SkDropShadowImageFilter(SkIntToScalar(10), SkIntToScalar(10), SkIntToScalar(3),
                                         SK_ColorGREEN),
             new SkDisplacementMapEffect(SkDisplacementMapEffect::kR_ChannelSelectorType,
                                         SkDisplacementMapEffect::kR_ChannelSelectorType,
                                         SkIntToScalar(12),
                                         gradient.get(),
                                         checkerboard.get()),
             new SkDilateImageFilter(2, 2, checkerboard.get()),
             new SkErodeImageFilter(2, 2, checkerboard.get()),
             new SkOffsetImageFilter(SkIntToScalar(-16), SkIntToScalar(32)),
             new SkResizeImageFilter(RESIZE_FACTOR_X, RESIZE_FACTOR_Y, SkPaint::kNone_FilterLevel),
+            SkRectShaderImageFilter::Create(noise),
         };
 
         SkRect r = SkRect::MakeWH(SkIntToScalar(64), SkIntToScalar(64));
         SkScalar margin = SkIntToScalar(16);
         SkRect bounds = r;
         bounds.outset(margin, margin);
 
         for (int xOffset = 0; xOffset < 80; xOffset += 16) {
             canvas->save();
             bounds.fLeft = SkIntToScalar(xOffset);
@@ skipping 30 matching lines @@
     SkBitmap fGradientCircle;
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new ImageFiltersClippedGM; }
 static GMRegistry reg(MyFactory);
 
 }