| /* |
| * Copyright 2014 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/SkMatrix.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkShader.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkString.h" |
| #include "include/core/SkTileMode.h" |
| |
| /*** |
| * |
| * This GM reproduces Skia bug 2904, in which a tiled bitmap shader was failing to draw correctly |
| * when fractional image scaling was ignored by the high quality bitmap scaler. |
| * |
| ***/ |
| |
| namespace skiagm { |
| |
| class TiledScaledBitmapGM : public GM { |
| public: |
| |
| TiledScaledBitmapGM() { |
| } |
| |
| protected: |
| SkString getName() const override { return SkString("tiledscaledbitmap"); } |
| |
| SkISize getISize() override { return SkISize::Make(1016, 616); } |
| |
| static SkBitmap make_bm(int width, int height) { |
| SkBitmap bm; |
| bm.allocN32Pixels(width, height); |
| bm.eraseColor(SK_ColorTRANSPARENT); |
| SkCanvas canvas(bm); |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| canvas.drawCircle(width/2.f, height/2.f, width/4.f, paint); |
| return bm; |
| } |
| |
| void onOnceBeforeDraw() override { |
| fBitmap = make_bm(360, 288); |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| SkPaint paint; |
| |
| paint.setAntiAlias(true); |
| |
| SkMatrix mat; |
| mat.setScale(121.f/360.f, 93.f/288.f); |
| mat.postTranslate(-72, -72); |
| |
| paint.setShader(fBitmap.makeShader(SkTileMode::kRepeat, SkTileMode::kRepeat, |
| SkSamplingOptions(SkCubicResampler::Mitchell()), mat)); |
| canvas->drawRect({ 8, 8, 1008, 608 }, paint); |
| } |
| |
| private: |
| SkBitmap fBitmap; |
| |
| using INHERITED = GM; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_GM(return new TiledScaledBitmapGM;) |
| } // namespace skiagm |