44 lines
1.2 KiB
C++
44 lines
1.2 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 "gm/gm.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkColorFilter.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkRefCnt.h"
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#include "tools/Resources.h"
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DEF_SIMPLE_GM(srgb_colorfilter, canvas, 512, 256*3) {
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auto img = GetResourceAsImage("images/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 = SkColorFilters::Matrix(array);
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auto cf1 = SkColorFilters::LinearToSRGBGamma();
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auto cf2 = SkColorFilters::SRGBToLinearGamma();
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SkSamplingOptions sampling;
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SkPaint p;
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p.setColorFilter(cf0);
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canvas->drawImage(img, 0, 0);
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canvas->drawImage(img, 256, 0, sampling, &p);
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p.setColorFilter(cf1);
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canvas->drawImage(img, 0, 256, sampling, &p);
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p.setColorFilter(cf1->makeComposed(cf0));
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canvas->drawImage(img, 256, 256, sampling, &p);
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p.setColorFilter(cf2);
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canvas->drawImage(img, 0, 512, sampling, &p);
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p.setColorFilter(cf2->makeComposed(cf0));
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canvas->drawImage(img, 256, 512, sampling, &p);
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}
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