| /* |
| * Copyright 2016 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "gm/gm.h" |
| #include "include/core/SkBitmap.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkColorPriv.h" |
| #include "include/core/SkImage.h" |
| #include "include/core/SkImageInfo.h" |
| #include "include/core/SkMatrix.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkShader.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkString.h" |
| #include "include/core/SkTileMode.h" |
| |
| static sk_sp<SkImage> make_image(int firstBlackRow, int lastBlackRow) { |
| static const int kWidth = 25; |
| static const int kHeight = 27; |
| |
| SkBitmap bm; |
| bm.allocN32Pixels(kWidth, kHeight); |
| bm.eraseColor(SK_ColorWHITE); |
| for (int y = firstBlackRow; y < lastBlackRow; ++y) { |
| for (int x = 0; x < kWidth; ++x) { |
| *bm.getAddr32(x, y) = SkPackARGB32(0xFF, 0x0, 0x0, 0x0); |
| } |
| } |
| |
| bm.setAlphaType(SkAlphaType::kOpaque_SkAlphaType); |
| bm.setImmutable(); |
| |
| return bm.asImage(); |
| } |
| |
| // GM to reproduce crbug.com/673261. |
| class FilterBugGM : public skiagm::GM { |
| public: |
| FilterBugGM() { this->setBGColor(SK_ColorRED); } |
| |
| protected: |
| SkString getName() const override { return SkString("filterbug"); } |
| |
| SkISize getISize() override { return SkISize::Make(150, 150); } |
| |
| void onOnceBeforeDraw() override { |
| // The top texture has 5 black rows on top and then 22 white rows on the bottom |
| fTop = make_image(0, 5); |
| // The bottom texture has 5 black rows on the bottom and then 22 white rows on the top |
| fBot = make_image(22, 27); |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| static const SkSamplingOptions kSampling(SkCubicResampler::Mitchell()); |
| static const bool kDoAA = true; |
| |
| { |
| SkRect r1 = SkRect::MakeXYWH(50.0f, 0.0f, 50.0f, 50.0f); |
| SkPaint p1; |
| p1.setAntiAlias(kDoAA); |
| SkMatrix localMat; |
| localMat.setScaleTranslate(2.0f, 2.0f, 50.0f, 0.0f); |
| p1.setShader(fTop->makeShader(SkTileMode::kRepeat, SkTileMode::kRepeat, |
| kSampling, &localMat)); |
| |
| canvas->drawRect(r1, p1); |
| } |
| |
| { |
| SkRect r2 = SkRect::MakeXYWH(50.0f, 50.0f, 50.0f, 36.0f); |
| |
| SkPaint p2; |
| p2.setColor(SK_ColorWHITE); |
| p2.setAntiAlias(kDoAA); |
| |
| canvas->drawRect(r2, p2); |
| } |
| |
| { |
| SkRect r3 = SkRect::MakeXYWH(50.0f, 86.0f, 50.0f, 50.0f); |
| |
| SkPaint p3; |
| p3.setAntiAlias(kDoAA); |
| SkMatrix localMat; |
| localMat.setScaleTranslate(2.0f, 2.0f, 50.0f, 86.0f); |
| p3.setShader(fBot->makeShader(SkTileMode::kRepeat, SkTileMode::kRepeat, |
| kSampling, &localMat)); |
| |
| canvas->drawRect(r3, p3); |
| } |
| } |
| |
| private: |
| sk_sp<SkImage> fTop; |
| sk_sp<SkImage> fBot; |
| |
| using INHERITED = skiagm::GM; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_GM(return new FilterBugGM;) |