Fix CTM scaling and clipping of SkRectShaderImageFilter.

gm/imagefiltersscaled.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 SkIntToScalar(4)
 
 namespace skiagm {
 
 class ImageFiltersScaledGM : public GM {
 public:
     ImageFiltersScaledGM() : fInitialized(false) {
         this->setBGColor(0x00000000);
     }
 
 protected:
     virtual SkString onShortName() {
         return SkString("imagefiltersscaled");
     }
 
     virtual SkISize onISize() {
-        return make_isize(1020, 500);
+        return make_isize(1140, 500);
     }
 
     void make_checkerboard() {
         fCheckerboard.allocN32Pixels(64, 64);
         SkCanvas canvas(fCheckerboard);
         canvas.clear(0x00000000);
         SkPaint darkPaint;
         darkPaint.setColor(0xFF404040);
         SkPaint lightPaint;
         lightPaint.setColor(0xFFA0A0A0);
@@ skipping 32 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(4), SkIntToScalar(4)),
             new SkDropShadowImageFilter(SkIntToScalar(5), SkIntToScalar(10), SkIntToScalar(3),
                                         SK_ColorYELLOW),
             new SkDisplacementMapEffect(SkDisplacementMapEffect::kR_ChannelSelectorType,
                                         SkDisplacementMapEffect::kR_ChannelSelectorType,
                                         SkIntToScalar(12),
                                         gradient.get(),
                                         checkerboard.get()),
             new SkDilateImageFilter(1, 1, checkerboard.get()),
             new SkErodeImageFilter(1, 1, checkerboard.get()),
             new SkOffsetImageFilter(SkIntToScalar(32), 0),
             new SkResizeImageFilter(RESIZE_FACTOR, RESIZE_FACTOR, SkPaint::kNone_FilterLevel),
+            SkRectShaderImageFilter::Create(noise),
         };
 
         SkVector scales[] = {
             SkVector::Make(SkScalarInvert(2), SkScalarInvert(2)),
             SkVector::Make(SkIntToScalar(1), SkIntToScalar(1)),
             SkVector::Make(SkIntToScalar(1), SkIntToScalar(2)),
             SkVector::Make(SkIntToScalar(2), SkIntToScalar(1)),
             SkVector::Make(SkIntToScalar(2), SkIntToScalar(2)),
         };
 
@@ skipping 37 matching lines @@
     SkBitmap fGradientCircle;
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new ImageFiltersScaledGM; }
 static GMRegistry reg(MyFactory);
 
 }