104 lines
3.4 KiB
C++
104 lines
3.4 KiB
C++
/*
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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/gm.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkColor.h"
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#include "include/core/SkImage.h"
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#include "include/core/SkImageFilter.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/core/SkSurface.h"
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#include "include/core/SkTypes.h"
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#include "include/effects/SkImageFilters.h"
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namespace skiagm {
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// This GM reproduces the issue in crbug.com/472795. The SkImageSource image
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// is shifted for high quality mode between cpu and gpu.
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class ImageSourceGM : public GM {
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public:
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ImageSourceGM(const char* suffix, const SkSamplingOptions& sampling)
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: fSuffix(suffix), fSampling(sampling) {
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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("imagesrc2_");
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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 an image with high frequency vertical stripes
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void onOnceBeforeDraw() override {
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constexpr 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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auto surface(SkSurface::MakeRasterN32Premul(kImageSize, kImageSize));
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SkCanvas* canvas = surface->getCanvas();
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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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fImage = surface->makeImageSnapshot();
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}
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void onDraw(SkCanvas* canvas) override {
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const SkRect srcRect = SkRect::MakeLTRB(0, 0,
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SkIntToScalar(kImageSize),
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SkIntToScalar(kImageSize));
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const SkRect dstRect = SkRect::MakeLTRB(0.75f, 0.75f, 225.75f, 225.75f);
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SkPaint p;
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p.setImageFilter(SkImageFilters::Image(fImage, srcRect, dstRect, fSampling));
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canvas->saveLayer(nullptr, &p);
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canvas->restore();
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}
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private:
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inline static constexpr int kImageSize = 503;
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SkString fSuffix;
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SkSamplingOptions fSampling;
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sk_sp<SkImage> fImage;
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using INHERITED = GM;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM(return new ImageSourceGM("none", SkSamplingOptions());)
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DEF_GM(return new ImageSourceGM("low", SkSamplingOptions(SkFilterMode::kLinear));)
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DEF_GM(return new ImageSourceGM("med", SkSamplingOptions(SkFilterMode::kLinear,
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SkMipmapMode::kLinear));)
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DEF_GM(return new ImageSourceGM("high", SkSamplingOptions({1/3.0f, 1/3.0f}));)
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} // namespace skiagm
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