77a7a1b57c
Reland from: https://skia-review.googlesource.com/c/8021/ BUG=skia: Change-Id: I18985f130587b15fccbc86b76b2bb5c49ba5ba8a Reviewed-on: https://skia-review.googlesource.com/8136 Reviewed-by: Matt Sarett <msarett@google.com> Commit-Queue: Matt Sarett <msarett@google.com>
89 lines
2.9 KiB
C++
89 lines
2.9 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 "SkColor.h"
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#include "SkColorSpaceXform.h"
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#include "SkRect.h"
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class ColorSpaceXformGM : public skiagm::GM {
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public:
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ColorSpaceXformGM() {}
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protected:
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void onOnceBeforeDraw() override {
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SkColor colors[] = {
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SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorMAGENTA, SK_ColorCYAN, SK_ColorYELLOW,
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SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorMAGENTA,
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};
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static_assert(kNumColors == SK_ARRAY_COUNT(colors), "Fix number of colors.");
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for (int i = 0; i < kNumColors; i++) {
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fSRGBColors[i] = SkColor4f::FromColor(colors[i]);
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}
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static constexpr float kWideGamutRGB_toXYZD50[]{
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0.7161046f, 0.1009296f, 0.1471858f,
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0.2581874f, 0.7249378f, 0.0168748f,
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0.0000000f, 0.0517813f, 0.7734287f,
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};
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SkMatrix44 wideGamut(SkMatrix44::kUninitialized_Constructor);
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wideGamut.set3x3RowMajorf(kWideGamutRGB_toXYZD50);
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sk_sp<SkColorSpace> srcSpace = SkColorSpace::MakeSRGB();
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sk_sp<SkColorSpace> dstSpace =
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SkColorSpace::MakeRGB(SkColorSpace::kLinear_RenderTargetGamma, wideGamut);
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std::unique_ptr<SkColorSpaceXform> xform = SkColorSpaceXform::New(srcSpace.get(),
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dstSpace.get());
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xform->apply(SkColorSpaceXform::kRGBA_F32_ColorFormat, fWideGamutColors,
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SkColorSpaceXform::kBGRA_8888_ColorFormat, colors, kNumColors,
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kOpaque_SkAlphaType);
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}
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SkString onShortName() override {
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return SkString("colorspacexform");
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}
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SkISize onISize() override {
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return SkISize::Make(500, 200);
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}
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void onDraw(SkCanvas* canvas) override {
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auto drawColors = [canvas](SkColor4f* colors) {
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SkRect r = SkRect::MakeXYWH(0.0f, 0.0f, 50.0f, 100.0f);
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canvas->save();
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for (int i = 0; i < kNumColors; i++) {
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auto space = SkColorSpace::MakeSRGBLinear();
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sk_sp<SkShader> s = SkShader::MakeColorShader(colors[i], space);
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SkPaint paint;
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paint.setShader(s);
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canvas->drawRect(r, paint);
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canvas->translate(50.0f, 0.0f);
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}
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canvas->restore();
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};
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// Wide gamut colors should appear darker - we are simulating a more intense display.
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drawColors(fSRGBColors);
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canvas->translate(0.0f, 100.0f);
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drawColors(fWideGamutColors);
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}
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private:
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static constexpr int kNumColors = 10;
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SkColor4f fSRGBColors[kNumColors];
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SkColor4f fWideGamutColors[kNumColors];
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typedef skiagm::GM INHERITED;
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};
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DEF_GM(return new ColorSpaceXformGM;)
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