| /* |
| * Copyright 2017 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "gm.h" |
| #include "Resources.h" |
| #include "SkCodec.h" |
| #include "SkColorSpace_Base.h" |
| #include "SkImage.h" |
| #include "SkImagePriv.h" |
| |
| sk_sp<SkImage> make_raster_image(const char* path, SkTransferFunctionBehavior behavior) { |
| sk_sp<SkData> resourceData = GetResourceAsData(path); |
| std::unique_ptr<SkCodec> codec = SkCodec::MakeFromData(resourceData); |
| |
| SkBitmap bitmap; |
| bitmap.allocPixels(codec->getInfo()); |
| |
| SkCodec::Options opts; |
| opts.fPremulBehavior = behavior; |
| codec->getPixels(codec->getInfo(), bitmap.getPixels(), bitmap.rowBytes(), &opts); |
| return SkImage::MakeFromBitmap(bitmap); |
| } |
| |
| sk_sp<SkImage> make_color_space(sk_sp<SkImage> orig, sk_sp<SkColorSpace> colorSpace, |
| SkTransferFunctionBehavior behavior) { |
| sk_sp<SkImage> xform = orig->makeColorSpace(colorSpace, behavior); |
| |
| // Assign an sRGB color space on the xformed image, so we can see the effects of the xform |
| // when we draw. |
| sk_sp<SkColorSpace> srgb = SkColorSpace::MakeSRGB(); |
| if (colorSpace->gammaIsLinear()) { |
| srgb = SkColorSpace::MakeSRGBLinear(); |
| } |
| return SkImageMakeRasterCopyAndAssignColorSpace(xform.get(), srgb.get()); |
| } |
| |
| class MakeCSGM : public skiagm::GM { |
| public: |
| MakeCSGM() {} |
| |
| protected: |
| SkString onShortName() override { |
| return SkString("makecolorspace"); |
| } |
| |
| SkISize onISize() override { |
| return SkISize::Make(128*3, 128*4); |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| SkTransferFunctionBehavior behavior = canvas->imageInfo().colorSpace() ? |
| SkTransferFunctionBehavior::kRespect : SkTransferFunctionBehavior::kIgnore; |
| |
| sk_sp<SkColorSpace> wideGamut = SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma, |
| SkColorSpace::kAdobeRGB_Gamut); |
| sk_sp<SkColorSpace> wideGamutLinear = as_CSB(wideGamut)->makeLinearGamma(); |
| |
| // Lazy images |
| sk_sp<SkImage> opaqueImage = GetResourceAsImage("images/mandrill_128.png"); |
| sk_sp<SkImage> premulImage = GetResourceAsImage("images/color_wheel.png"); |
| canvas->drawImage(opaqueImage, 0.0f, 0.0f); |
| canvas->drawImage(make_color_space(opaqueImage, wideGamut, behavior), 128.0f, 0.0f); |
| canvas->drawImage(make_color_space(opaqueImage, wideGamutLinear, behavior), 256.0f, 0.0f); |
| canvas->drawImage(premulImage, 0.0f, 128.0f); |
| canvas->drawImage(make_color_space(premulImage, wideGamut, behavior), 128.0f, 128.0f); |
| canvas->drawImage(make_color_space(premulImage, wideGamutLinear, behavior), 256.0f, 128.0f); |
| canvas->translate(0.0f, 256.0f); |
| |
| // Raster images |
| opaqueImage = make_raster_image("images/mandrill_128.png", behavior); |
| premulImage = make_raster_image("images/color_wheel.png", behavior); |
| canvas->drawImage(opaqueImage, 0.0f, 0.0f); |
| canvas->drawImage(make_color_space(opaqueImage, wideGamut, behavior), 128.0f, 0.0f); |
| canvas->drawImage(make_color_space(opaqueImage, wideGamutLinear, behavior), 256.0f, 0.0f); |
| canvas->drawImage(premulImage, 0.0f, 128.0f); |
| canvas->drawImage(make_color_space(premulImage, wideGamut, behavior), 128.0f, 128.0f); |
| canvas->drawImage(make_color_space(premulImage, wideGamutLinear, behavior), 256.0f, 128.0f); |
| } |
| |
| private: |
| typedef skiagm::GM INHERITED; |
| }; |
| |
| DEF_GM(return new MakeCSGM;) |