7e68bc93ff
Dither can bump color values above alpha (duh), or below zero (duh), so clamp back to premul after dithering. BUG=skia:6644,skia:6643 Change-Id: Ida107e866380e06130af0d01467117bca929ba44 Reviewed-on: https://skia-review.googlesource.com/17070 Reviewed-by: Herb Derby <herb@google.com> Reviewed-by: Florin Malita <fmalita@chromium.org> Commit-Queue: Mike Klein <mtklein@chromium.org>
30 lines
1.0 KiB
C++
30 lines
1.0 KiB
C++
/*
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* Copyright 2017 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 "SkGradientShader.h"
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#include "SkPictureRecorder.h"
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#include "gm.h"
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DEF_SIMPLE_GM(bug6643, canvas, 200, 200) {
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SkColor colors[] = { SK_ColorTRANSPARENT, SK_ColorGREEN, SK_ColorTRANSPARENT };
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SkPaint p;
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p.setAntiAlias(true);
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p.setShader(SkGradientShader::MakeSweep(100, 100, colors, nullptr, SK_ARRAY_COUNT(colors),
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SkGradientShader::kInterpolateColorsInPremul_Flag,
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nullptr));
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SkPictureRecorder recorder;
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recorder.beginRecording(200, 200)->drawPaint(p);
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p.setShader(SkShader::MakePictureShader(recorder.finishRecordingAsPicture(),
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SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode,
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nullptr, nullptr));
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canvas->drawColor(SK_ColorWHITE);
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canvas->drawPaint(p);
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}
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