msarett | c044461 | 2016-09-16 11:45:58 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "gm.h" |
| 9 | #include "SkColor.h" |
| 10 | #include "SkColorSpaceXform.h" |
| 11 | #include "SkRect.h" |
| 12 | |
| 13 | class ColorSpaceXformGM : public skiagm::GM { |
| 14 | public: |
| 15 | ColorSpaceXformGM() {} |
| 16 | |
| 17 | protected: |
| 18 | void onOnceBeforeDraw() override { |
| 19 | SkColor colors[] = { |
| 20 | SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorMAGENTA, SK_ColorCYAN, SK_ColorYELLOW, |
| 21 | SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorMAGENTA, |
| 22 | }; |
| 23 | static_assert(kNumColors == SK_ARRAY_COUNT(colors), "Fix number of colors."); |
| 24 | |
| 25 | for (int i = 0; i < kNumColors; i++) { |
| 26 | fSRGBColors[i] = SkColor4f::FromColor(colors[i]); |
msarett | c044461 | 2016-09-16 11:45:58 -0700 | [diff] [blame] | 27 | } |
| 28 | |
| 29 | static constexpr float kWideGamutRGB_toXYZD50[]{ |
| 30 | 0.7161046f, 0.1009296f, 0.1471858f, |
| 31 | 0.2581874f, 0.7249378f, 0.0168748f, |
| 32 | 0.0000000f, 0.0517813f, 0.7734287f, |
| 33 | }; |
| 34 | |
| 35 | SkMatrix44 wideGamut(SkMatrix44::kUninitialized_Constructor); |
| 36 | wideGamut.set3x3RowMajorf(kWideGamutRGB_toXYZD50); |
msarett | 4be0e7c | 2016-09-22 07:02:24 -0700 | [diff] [blame] | 37 | |
Brian Osman | 526972e | 2016-10-24 09:24:02 -0400 | [diff] [blame] | 38 | sk_sp<SkColorSpace> srcSpace = SkColorSpace::MakeNamed(SkColorSpace::kSRGB_Named); |
msarett | 4be0e7c | 2016-09-22 07:02:24 -0700 | [diff] [blame] | 39 | sk_sp<SkColorSpace> dstSpace = |
Brian Osman | 526972e | 2016-10-24 09:24:02 -0400 | [diff] [blame] | 40 | SkColorSpace::MakeRGB(SkColorSpace::kLinear_RenderTargetGamma, wideGamut); |
msarett | 4be0e7c | 2016-09-22 07:02:24 -0700 | [diff] [blame] | 41 | std::unique_ptr<SkColorSpaceXform> xform = SkColorSpaceXform::New(srcSpace.get(), |
| 42 | dstSpace.get()); |
msarett | c044461 | 2016-09-16 11:45:58 -0700 | [diff] [blame] | 43 | |
msarett | 31d097e8 | 2016-10-11 12:15:03 -0700 | [diff] [blame] | 44 | xform->apply(SkColorSpaceXform::kRGBA_F32_ColorFormat, fWideGamutColors, |
| 45 | SkColorSpaceXform::kBGRA_8888_ColorFormat, colors, kNumColors, |
| 46 | kOpaque_SkAlphaType); |
msarett | c044461 | 2016-09-16 11:45:58 -0700 | [diff] [blame] | 47 | } |
| 48 | |
| 49 | SkString onShortName() override { |
| 50 | return SkString("colorspacexform"); |
| 51 | } |
| 52 | |
| 53 | SkISize onISize() override { |
| 54 | return SkISize::Make(500, 200); |
| 55 | } |
| 56 | |
| 57 | void onDraw(SkCanvas* canvas) override { |
| 58 | auto drawColors = [canvas](SkColor4f* colors) { |
| 59 | SkRect r = SkRect::MakeXYWH(0.0f, 0.0f, 50.0f, 100.0f); |
| 60 | |
| 61 | canvas->save(); |
| 62 | for (int i = 0; i < kNumColors; i++) { |
Brian Osman | 526972e | 2016-10-24 09:24:02 -0400 | [diff] [blame] | 63 | auto space = SkColorSpace::MakeNamed(SkColorSpace::kSRGBLinear_Named); |
msarett | c044461 | 2016-09-16 11:45:58 -0700 | [diff] [blame] | 64 | sk_sp<SkShader> s = SkShader::MakeColorShader(colors[i], space); |
| 65 | SkPaint paint; |
| 66 | paint.setShader(s); |
| 67 | canvas->drawRect(r, paint); |
| 68 | canvas->translate(50.0f, 0.0f); |
| 69 | } |
| 70 | canvas->restore(); |
| 71 | }; |
| 72 | |
| 73 | // Wide gamut colors should appear darker - we are simulating a more intense display. |
| 74 | drawColors(fSRGBColors); |
| 75 | canvas->translate(0.0f, 100.0f); |
| 76 | drawColors(fWideGamutColors); |
| 77 | } |
| 78 | |
| 79 | private: |
| 80 | static constexpr int kNumColors = 10; |
| 81 | |
| 82 | SkColor4f fSRGBColors[kNumColors]; |
| 83 | SkColor4f fWideGamutColors[kNumColors]; |
| 84 | |
| 85 | typedef skiagm::GM INHERITED; |
| 86 | }; |
| 87 | |
| 88 | DEF_GM(return new ColorSpaceXformGM;) |