43 lines
1.1 KiB
C++
43 lines
1.1 KiB
C++
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/*
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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 "gm.h"
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#include "sk_tool_utils.h"
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#include "SkCanvas.h"
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#include "SkImage.h"
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#include "Resources.h"
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#include "SkColorFilter.h"
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DEF_SIMPLE_GM(srgb_colorfilter, canvas, 512, 256*3) {
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auto img = GetResourceAsImage("mandrill_256.png");
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const float array[] = {
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1, 0, 0, 0, 0,
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0, 1, 0, 0, 0,
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0, 0, 1, 0, 0,
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-1, 0, 0, 1, 0,
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};
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auto cf0 = SkColorFilter::MakeMatrixFilterRowMajor255(array);
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auto cf1 = SkColorFilter::MakeLinearToSRGBGamma();
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auto cf2 = SkColorFilter::MakeSRGBToLinearGamma();
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SkPaint p;
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p.setColorFilter(cf0);
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canvas->drawImage(img, 0, 0, nullptr);
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canvas->drawImage(img, 256, 0, &p);
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p.setColorFilter(cf1);
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canvas->drawImage(img, 0, 256, &p);
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p.setColorFilter(SkColorFilter::MakeComposeFilter(cf1, cf0));
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canvas->drawImage(img, 256, 256, &p);
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p.setColorFilter(cf2);
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canvas->drawImage(img, 0, 512, &p);
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p.setColorFilter(SkColorFilter::MakeComposeFilter(cf2, cf0));
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canvas->drawImage(img, 256, 512, &p);
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}
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