Matt Sarett | 9f3dcb3 | 2017-05-04 08:53:32 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017 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 "Resources.h" |
| 10 | #include "SkCodec.h" |
| 11 | #include "SkColorSpace_Base.h" |
| 12 | #include "SkImage.h" |
| 13 | #include "SkImagePriv.h" |
| 14 | |
| 15 | sk_sp<SkImage> make_raster_image(const char* path, SkTransferFunctionBehavior behavior) { |
Mike Reed | 0933bc9 | 2017-12-09 01:27:41 +0000 | [diff] [blame] | 16 | sk_sp<SkData> resourceData = GetResourceAsData(path); |
Mike Reed | ede7bac | 2017-07-23 15:30:02 -0400 | [diff] [blame] | 17 | std::unique_ptr<SkCodec> codec = SkCodec::MakeFromData(resourceData); |
Matt Sarett | 9f3dcb3 | 2017-05-04 08:53:32 -0400 | [diff] [blame] | 18 | |
| 19 | SkBitmap bitmap; |
| 20 | bitmap.allocPixels(codec->getInfo()); |
| 21 | |
| 22 | SkCodec::Options opts; |
| 23 | opts.fPremulBehavior = behavior; |
Leon Scroggins | 571b30f | 2017-07-11 17:35:31 +0000 | [diff] [blame] | 24 | codec->getPixels(codec->getInfo(), bitmap.getPixels(), bitmap.rowBytes(), &opts); |
Matt Sarett | 9f3dcb3 | 2017-05-04 08:53:32 -0400 | [diff] [blame] | 25 | return SkImage::MakeFromBitmap(bitmap); |
| 26 | } |
| 27 | |
| 28 | sk_sp<SkImage> make_color_space(sk_sp<SkImage> orig, sk_sp<SkColorSpace> colorSpace, |
| 29 | SkTransferFunctionBehavior behavior) { |
| 30 | sk_sp<SkImage> xform = orig->makeColorSpace(colorSpace, behavior); |
| 31 | |
| 32 | // Assign an sRGB color space on the xformed image, so we can see the effects of the xform |
| 33 | // when we draw. |
| 34 | sk_sp<SkColorSpace> srgb = SkColorSpace::MakeSRGB(); |
| 35 | if (colorSpace->gammaIsLinear()) { |
| 36 | srgb = SkColorSpace::MakeSRGBLinear(); |
| 37 | } |
| 38 | return SkImageMakeRasterCopyAndAssignColorSpace(xform.get(), srgb.get()); |
| 39 | } |
| 40 | |
| 41 | class MakeCSGM : public skiagm::GM { |
| 42 | public: |
| 43 | MakeCSGM() {} |
| 44 | |
| 45 | protected: |
| 46 | SkString onShortName() override { |
| 47 | return SkString("makecolorspace"); |
| 48 | } |
| 49 | |
| 50 | SkISize onISize() override { |
| 51 | return SkISize::Make(128*3, 128*4); |
| 52 | } |
| 53 | |
| 54 | void onDraw(SkCanvas* canvas) override { |
| 55 | SkTransferFunctionBehavior behavior = canvas->imageInfo().colorSpace() ? |
| 56 | SkTransferFunctionBehavior::kRespect : SkTransferFunctionBehavior::kIgnore; |
| 57 | |
| 58 | sk_sp<SkColorSpace> wideGamut = SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma, |
| 59 | SkColorSpace::kAdobeRGB_Gamut); |
Brian Osman | 36703d9 | 2017-12-12 14:09:31 -0500 | [diff] [blame] | 60 | sk_sp<SkColorSpace> wideGamutLinear = wideGamut->makeLinearGamma(); |
Matt Sarett | 9f3dcb3 | 2017-05-04 08:53:32 -0400 | [diff] [blame] | 61 | |
| 62 | // Lazy images |
Hal Canary | c465d13 | 2017-12-08 10:21:31 -0500 | [diff] [blame] | 63 | sk_sp<SkImage> opaqueImage = GetResourceAsImage("images/mandrill_128.png"); |
| 64 | sk_sp<SkImage> premulImage = GetResourceAsImage("images/color_wheel.png"); |
Matt Sarett | 9f3dcb3 | 2017-05-04 08:53:32 -0400 | [diff] [blame] | 65 | canvas->drawImage(opaqueImage, 0.0f, 0.0f); |
| 66 | canvas->drawImage(make_color_space(opaqueImage, wideGamut, behavior), 128.0f, 0.0f); |
| 67 | canvas->drawImage(make_color_space(opaqueImage, wideGamutLinear, behavior), 256.0f, 0.0f); |
| 68 | canvas->drawImage(premulImage, 0.0f, 128.0f); |
| 69 | canvas->drawImage(make_color_space(premulImage, wideGamut, behavior), 128.0f, 128.0f); |
| 70 | canvas->drawImage(make_color_space(premulImage, wideGamutLinear, behavior), 256.0f, 128.0f); |
| 71 | canvas->translate(0.0f, 256.0f); |
| 72 | |
| 73 | // Raster images |
Hal Canary | c465d13 | 2017-12-08 10:21:31 -0500 | [diff] [blame] | 74 | opaqueImage = make_raster_image("images/mandrill_128.png", behavior); |
| 75 | premulImage = make_raster_image("images/color_wheel.png", behavior); |
Matt Sarett | 9f3dcb3 | 2017-05-04 08:53:32 -0400 | [diff] [blame] | 76 | canvas->drawImage(opaqueImage, 0.0f, 0.0f); |
| 77 | canvas->drawImage(make_color_space(opaqueImage, wideGamut, behavior), 128.0f, 0.0f); |
| 78 | canvas->drawImage(make_color_space(opaqueImage, wideGamutLinear, behavior), 256.0f, 0.0f); |
| 79 | canvas->drawImage(premulImage, 0.0f, 128.0f); |
| 80 | canvas->drawImage(make_color_space(premulImage, wideGamut, behavior), 128.0f, 128.0f); |
| 81 | canvas->drawImage(make_color_space(premulImage, wideGamutLinear, behavior), 256.0f, 128.0f); |
| 82 | } |
| 83 | |
| 84 | private: |
| 85 | typedef skiagm::GM INHERITED; |
| 86 | }; |
| 87 | |
| 88 | DEF_GM(return new MakeCSGM;) |