50 lines
1.7 KiB
C++
50 lines
1.7 KiB
C++
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/*
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* Copyright 2018 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 "SkColorSpace.h"
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#include "SkString.h"
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DEF_SIMPLE_GM(p3, canvas, 320, 240) {
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auto dp3 = SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma,
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SkColorSpace::kDCIP3_D65_Gamut);
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// Draw a P3 red rectangle.
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SkPaint paint;
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paint.setColor4f({1,0,0,1}, dp3.get());
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canvas->drawRect({10,10,70,70}, SkPaint{});
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canvas->drawRect({10,10,70,70}, paint);
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// Read it back in the color space of the canvas, and in P3.
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auto info = SkImageInfo::Make(60,60, kRGBA_F32_SkColorType, kUnpremul_SkAlphaType);
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SkBitmap native_bm,
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p3_bm;
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native_bm.allocPixels(info.makeColorSpace(canvas->imageInfo().refColorSpace()));
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p3_bm .allocPixels(info.makeColorSpace(dp3));
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if (canvas->readPixels(native_bm, 10,10) &&
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canvas->readPixels( p3_bm, 10,10))
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{
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canvas->drawString("drawRect()", 100,20, SkPaint{});
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const float* rgb = (const float*)native_bm.getAddr(10,10);
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canvas->drawString("Native:", 80,40, SkPaint{});
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canvas->drawString(SkStringPrintf("%.2g %.2g %.2g", rgb[0], rgb[1], rgb[2]).c_str(),
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120,40, SkPaint{});
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canvas->drawString("P3:", 80,60, SkPaint{});
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rgb = (const float*)p3_bm.getAddr(10,10);
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canvas->drawString(SkStringPrintf("%.2g %.2g %.2g", rgb[0], rgb[1], rgb[2]).c_str(),
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120,60, SkPaint{});
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} else {
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canvas->drawString("can't readPixels() :(", 100,20, SkPaint{});
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}
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// TODO: draw P3 colors more ways
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}
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