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| 1 /* |
| 2 * Copyright 2015 Google Inc. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. |
| 6 */ |
| 7 |
| 8 #include "gm.h" |
| 9 #include "SkBitmapSource.h" |
| 10 |
| 11 namespace skiagm { |
| 12 |
| 13 // This GM reproduces the issue in crbug.com/472795. The SkBitmapSource image |
| 14 // is shifted for high quality mode between cpu and gpu. |
| 15 class BitmapSourceGM : public GM { |
| 16 public: |
| 17 BitmapSourceGM(const char* suffix, SkFilterQuality filter) : fSuffix(suffix)
, fFilter(filter) { |
| 18 this->setBGColor(0xFFFFFFFF); |
| 19 } |
| 20 |
| 21 protected: |
| 22 SkString onShortName() override { |
| 23 SkString name("bitmapsrc2_"); |
| 24 name.append(fSuffix); |
| 25 return name; |
| 26 } |
| 27 |
| 28 SkISize onISize() override { return SkISize::Make(256, 256); } |
| 29 |
| 30 // Create a bitmap with high frequency vertical stripes |
| 31 void onOnceBeforeDraw() override { |
| 32 static const SkPMColor gColors[] = { |
| 33 SK_ColorRED, SK_ColorGRAY, |
| 34 SK_ColorGREEN, SK_ColorGRAY, |
| 35 SK_ColorBLUE, SK_ColorGRAY, |
| 36 SK_ColorCYAN, SK_ColorGRAY, |
| 37 SK_ColorMAGENTA, SK_ColorGRAY, |
| 38 SK_ColorYELLOW, SK_ColorGRAY, |
| 39 SK_ColorWHITE, SK_ColorGRAY, |
| 40 }; |
| 41 |
| 42 fBM.allocN32Pixels(kImageSize, kImageSize, true); |
| 43 |
| 44 SkCanvas canvas(fBM); |
| 45 |
| 46 int curColor = 0; |
| 47 |
| 48 for (int x = 0; x < kImageSize; x += 3) { |
| 49 SkRect r = SkRect::MakeXYWH(SkIntToScalar(x), SkIntToScalar(0), |
| 50 SkIntToScalar(3), SkIntToScalar(kImageSi
ze)); |
| 51 SkPaint p; |
| 52 p.setColor(gColors[curColor]); |
| 53 canvas.drawRect(r, p); |
| 54 |
| 55 curColor = (curColor+1) % SK_ARRAY_COUNT(gColors); |
| 56 } |
| 57 } |
| 58 |
| 59 void onDraw(SkCanvas* canvas) override { |
| 60 SkRect srcRect = SkRect::MakeLTRB(0, 0, |
| 61 SkIntToScalar(kImageSize), SkIntToScal
ar(kImageSize)); |
| 62 SkRect dstRect = SkRect::MakeLTRB(0.75f, 0.75f, 225.75f, 225.75f); |
| 63 |
| 64 SkAutoTUnref<SkImageFilter> filter(SkBitmapSource::Create(fBM, srcRect,
dstRect, fFilter)); |
| 65 |
| 66 SkPaint p; |
| 67 p.setImageFilter(filter); |
| 68 |
| 69 canvas->saveLayer(NULL, &p); |
| 70 canvas->restore(); |
| 71 } |
| 72 |
| 73 private: |
| 74 static const int kImageSize = 503; |
| 75 |
| 76 SkString fSuffix; |
| 77 SkFilterQuality fFilter; |
| 78 SkBitmap fBM; |
| 79 |
| 80 typedef GM INHERITED; |
| 81 }; |
| 82 |
| 83 ////////////////////////////////////////////////////////////////////////////// |
| 84 |
| 85 DEF_GM( return SkNEW_ARGS(BitmapSourceGM, ("none", kNone_SkFilterQuality) ); ) |
| 86 DEF_GM( return SkNEW_ARGS(BitmapSourceGM, ("low", kLow_SkFilterQuality) ); ) |
| 87 DEF_GM( return SkNEW_ARGS(BitmapSourceGM, ("med", kMedium_SkFilterQuality) ); ) |
| 88 DEF_GM( return SkNEW_ARGS(BitmapSourceGM, ("high", kHigh_SkFilterQuality) ); ) |
| 89 |
| 90 } |
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