Fix for cropped matrix convolution for BottomLeft render targets.

gm/matrixconvolution.cpp

 /*
  * Copyright 2012 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 "SkMatrixConvolutionImageFilter.h"
@@ skipping 75 matching lines @@
         }
         canvas->clear(0x00000000);
         SkIPoint target = SkIPoint::Make(1, 0);
         for (int x = 10; x < 310; x += 100) {
             this->draw(canvas, x, 10, target, MCIF::kClamp_TileMode, true);
             this->draw(canvas, x, 110, target, MCIF::kClampToBlack_TileMode, true);
             this->draw(canvas, x, 210, target, MCIF::kRepeat_TileMode, true);
             target.fY++;
         }
         target.fY = 1;
-        SkImageFilter::CropRect rect(SkRect::MakeXYWH(10, 10, 60, 60));
+        SkImageFilter::CropRect rect(SkRect::MakeXYWH(10, 5, 60, 60));
         this->draw(canvas, 310, 10, target, MCIF::kClamp_TileMode, true, &rect);
         this->draw(canvas, 310, 110, target, MCIF::kClampToBlack_TileMode, true, &rect);
         this->draw(canvas, 310, 210, target, MCIF::kRepeat_TileMode, true, &rect);
 
         this->draw(canvas, 410, 10, target, MCIF::kClamp_TileMode, false);
         this->draw(canvas, 410, 110, target, MCIF::kClampToBlack_TileMode, false);
         this->draw(canvas, 410, 210, target, MCIF::kRepeat_TileMode, false);
     }
 
 private:
     typedef GM INHERITED;
     SkBitmap fBitmap;
     bool fInitialized;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new MatrixConvolutionGM; }
 static GMRegistry reg(MyFactory);
 
 }