d16084ffdc
This one produces noticeable differences if we fail to dither. Bug:720105 Change-Id: I208d0c8147f4cca1b484f2f55edc09ce1bef2dcb Reviewed-on: https://skia-review.googlesource.com/18036 Commit-Queue: Mike Klein <mtklein@chromium.org> Reviewed-by: Mike Klein <mtklein@chromium.org>
57 lines
1.3 KiB
C++
57 lines
1.3 KiB
C++
/*
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* Copyright 2013 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 "sk_tool_utils.h"
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#include "Resources.h"
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#include "SkCanvas.h"
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#include "SkOSFile.h"
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namespace skiagm {
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/**
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* Test copying an image from 8888 to 4444.
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*/
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class CopyTo4444GM : public GM {
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public:
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CopyTo4444GM() {}
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protected:
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virtual SkString onShortName() {
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return SkString("copyTo4444");
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}
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virtual SkISize onISize() {
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return SkISize::Make(360, 180);
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}
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virtual void onDraw(SkCanvas* canvas) {
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SkBitmap bm, bm4444;
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if (!GetResourceAsBitmap("dog.jpg", &bm)) {
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SkDebugf("Could not decode the file. Did you forget to set the "
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"resourcePath?\n");
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return;
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}
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canvas->drawBitmap(bm, 0, 0);
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// This should dither or we will see artifacts in the background of the image.
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SkAssertResult(sk_tool_utils::copy_to(&bm4444, kARGB_4444_SkColorType, bm));
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canvas->drawBitmap(bm4444, SkIntToScalar(bm.width()), 0);
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}
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private:
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static GM* MyFactory(void*) { return new CopyTo4444GM; }
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static GMRegistry reg(MyFactory);
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}
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