38 lines
1.2 KiB
C++
38 lines
1.2 KiB
C++
// Copyright 2020 Google LLC.
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// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
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#include "tools/fiddle/examples.h"
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REG_FIDDLE_SRGB(50_percent_srgb, 256, 256, false, 0, 0, false) {
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static sk_sp<SkShader> make() {
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auto surf = SkSurface::MakeRasterN32Premul(2, 2);
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surf->getCanvas()->drawColor(SK_ColorWHITE);
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surf->getCanvas()->drawRect({0, 0, 1, 1}, SkPaint());
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surf->getCanvas()->drawRect({1, 1, 2, 2}, SkPaint());
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return surf->makeImageSnapshot()->makeShader(SkTileMode::kRepeat,
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SkTileMode::kRepeat,
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SkSamplingOptions(SkFilterMode::kLinear));
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}
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void draw(SkCanvas* canvas) {
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canvas->drawColor(SK_ColorWHITE);
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const SkRect r = { 0, 0, 100, 100 };
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SkPaint p;
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p.setShader(make());
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// this is a dither
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canvas->drawRect({0, 0, 50, 50}, p);
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canvas->scale(0.5, 0.5);
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canvas->translate(100, 0);
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canvas->drawRect(r, p);
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p.setShader(nullptr);
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p.setColor(0xFF808080);
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canvas->translate(100, 0);
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canvas->drawRect(r, p);
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p.setColor(0x80000000);
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canvas->translate(100, 0);
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canvas->drawRect(r, p);
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}
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} // END FIDDLE
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