91 lines
2.7 KiB
C++
91 lines
2.7 KiB
C++
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/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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#include "SkBitmapSource.h"
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namespace skiagm {
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// This GM reproduces the issue in crbug.com/472795. The SkBitmapSource image
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// is shifted for high quality mode between cpu and gpu.
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class BitmapSourceGM : public GM {
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public:
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BitmapSourceGM(const char* suffix, SkFilterQuality filter) : fSuffix(suffix), fFilter(filter) {
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this->setBGColor(0xFFFFFFFF);
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}
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protected:
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SkString onShortName() override {
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SkString name("bitmapsrc2_");
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name.append(fSuffix);
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return name;
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}
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SkISize onISize() override { return SkISize::Make(256, 256); }
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// Create a bitmap with high frequency vertical stripes
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void onOnceBeforeDraw() override {
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static const SkPMColor gColors[] = {
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SK_ColorRED, SK_ColorGRAY,
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SK_ColorGREEN, SK_ColorGRAY,
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SK_ColorBLUE, SK_ColorGRAY,
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SK_ColorCYAN, SK_ColorGRAY,
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SK_ColorMAGENTA, SK_ColorGRAY,
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SK_ColorYELLOW, SK_ColorGRAY,
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SK_ColorWHITE, SK_ColorGRAY,
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};
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fBM.allocN32Pixels(kImageSize, kImageSize, true);
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SkCanvas canvas(fBM);
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int curColor = 0;
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for (int x = 0; x < kImageSize; x += 3) {
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SkRect r = SkRect::MakeXYWH(SkIntToScalar(x), SkIntToScalar(0),
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SkIntToScalar(3), SkIntToScalar(kImageSize));
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SkPaint p;
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p.setColor(gColors[curColor]);
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canvas.drawRect(r, p);
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curColor = (curColor+1) % SK_ARRAY_COUNT(gColors);
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}
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}
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void onDraw(SkCanvas* canvas) override {
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SkRect srcRect = SkRect::MakeLTRB(0, 0,
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SkIntToScalar(kImageSize), SkIntToScalar(kImageSize));
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SkRect dstRect = SkRect::MakeLTRB(0.75f, 0.75f, 225.75f, 225.75f);
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SkAutoTUnref<SkImageFilter> filter(SkBitmapSource::Create(fBM, srcRect, dstRect, fFilter));
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SkPaint p;
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p.setImageFilter(filter);
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canvas->saveLayer(NULL, &p);
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canvas->restore();
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}
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private:
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static const int kImageSize = 503;
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SkString fSuffix;
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SkFilterQuality fFilter;
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SkBitmap fBM;
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM( return SkNEW_ARGS(BitmapSourceGM, ("none", kNone_SkFilterQuality) ); )
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DEF_GM( return SkNEW_ARGS(BitmapSourceGM, ("low", kLow_SkFilterQuality) ); )
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DEF_GM( return SkNEW_ARGS(BitmapSourceGM, ("med", kMedium_SkFilterQuality) ); )
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DEF_GM( return SkNEW_ARGS(BitmapSourceGM, ("high", kHigh_SkFilterQuality) ); )
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}
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