102 lines
3.0 KiB
C++
102 lines
3.0 KiB
C++
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/*
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* Copyright 2016 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 "SkImageShader.h"
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static const sk_sp<SkImage> make_image(int firstBlackRow, int lastBlackRow) {
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static const int kWidth = 25;
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static const int kHeight = 27;
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SkBitmap bm;
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bm.allocN32Pixels(kWidth, kHeight);
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bm.eraseColor(SK_ColorWHITE);
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for (int y = firstBlackRow; y < lastBlackRow; ++y) {
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for (int x = 0; x < kWidth; ++x) {
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*bm.getAddr32(x, y) = SkPackARGB32(0xFF, 0x0, 0x0, 0x0);
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}
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}
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bm.setAlphaType(SkAlphaType::kOpaque_SkAlphaType);
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bm.setImmutable();
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return SkImage::MakeFromBitmap(bm);
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}
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// GM to reproduce crbug.com/673261.
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class FilterBugGM : public skiagm::GM {
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public:
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FilterBugGM() { this->setBGColor(SK_ColorRED); }
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protected:
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SkString onShortName() override { return SkString("filterbug"); }
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SkISize onISize() override { return SkISize::Make(150, 150); }
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void onOnceBeforeDraw() override {
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// The top texture has 5 black rows on top and then 22 white rows on the bottom
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fTop = make_image(0, 5);
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// The bottom texture has 5 black rows on the bottom and then 22 white rows on the top
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fBot = make_image(22, 27);
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}
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void onDraw(SkCanvas* canvas) override {
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static const SkFilterQuality kFilterQuality = SkFilterQuality::kHigh_SkFilterQuality;
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static const bool kDoAA = true;
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{
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SkRect r1 = SkRect::MakeXYWH(50.0f, 0.0f, 50.0f, 50.0f);
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SkPaint p1;
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p1.setAntiAlias(kDoAA);
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p1.setFilterQuality(kFilterQuality);
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SkMatrix localMat;
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localMat.setScaleTranslate(2.0f, 2.0f, 50.0f, 0.0f);
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p1.setShader(SkImageShader::Make(fTop,
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SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode,
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&localMat));
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canvas->drawRect(r1, p1);
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}
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{
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SkRect r2 = SkRect::MakeXYWH(50.0f, 50.0f, 50.0f, 36.0f);
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SkPaint p2;
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p2.setColor(SK_ColorWHITE);
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p2.setAntiAlias(kDoAA);
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p2.setFilterQuality(kFilterQuality);
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canvas->drawRect(r2, p2);
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}
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{
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SkRect r3 = SkRect::MakeXYWH(50.0f, 86.0f, 50.0f, 50.0f);
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SkPaint p3;
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p3.setAntiAlias(kDoAA);
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p3.setFilterQuality(kFilterQuality);
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SkMatrix localMat;
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localMat.setScaleTranslate(2.0f, 2.0f, 50.0f, 86.0f);
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p3.setShader(SkImageShader::Make(fBot,
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SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode,
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&localMat));
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canvas->drawRect(r3, p3);
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}
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}
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private:
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sk_sp<SkImage> fTop;
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sk_sp<SkImage> fBot;
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typedef skiagm::GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM(return new FilterBugGM;)
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