a9549ab316
Moved named common transfer functions and gamuts to constexpr values in SkColorSpace.h, in SkNamedTransferFn and SkNamedGamut namespaces. Converted nearly all SkColorSpace::MakeRGB calls within Skia to use the new factory with the named values. Multiple clients want a way to extract named transfer function and gamut - this still doesn't provide that, but this may be a better path forward for honestly advertising how SkColorSpace works internally. Bug: skia: Change-Id: I9296d67e8f0dab5ceb49869cb3ba24e98a05f3c4 Reviewed-on: https://skia-review.googlesource.com/c/180360 Reviewed-by: Mike Klein <mtklein@google.com> Reviewed-by: Brian Osman <brianosman@google.com> Commit-Queue: Brian Osman <brianosman@google.com>
85 lines
3.1 KiB
C++
85 lines
3.1 KiB
C++
/*
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* Copyright 2017 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 "Resources.h"
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#include "SkCodec.h"
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#include "SkImage.h"
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#include "SkImagePriv.h"
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sk_sp<SkImage> make_raster_image(const char* path) {
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sk_sp<SkData> resourceData = GetResourceAsData(path);
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std::unique_ptr<SkCodec> codec = SkCodec::MakeFromData(resourceData);
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SkBitmap bitmap;
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bitmap.allocPixels(codec->getInfo());
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codec->getPixels(codec->getInfo(), bitmap.getPixels(), bitmap.rowBytes());
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return SkImage::MakeFromBitmap(bitmap);
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}
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sk_sp<SkImage> make_color_space(sk_sp<SkImage> orig, sk_sp<SkColorSpace> colorSpace) {
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sk_sp<SkImage> xform = orig->makeColorSpace(colorSpace);
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// Assign an sRGB color space on the xformed image, so we can see the effects of the xform
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// when we draw.
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sk_sp<SkColorSpace> srgb = SkColorSpace::MakeSRGB();
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if (colorSpace->gammaIsLinear()) {
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srgb = SkColorSpace::MakeSRGBLinear();
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}
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return SkImageMakeRasterCopyAndAssignColorSpace(xform.get(), srgb.get());
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}
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class MakeCSGM : public skiagm::GM {
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public:
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MakeCSGM() {}
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protected:
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SkString onShortName() override {
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return SkString("makecolorspace");
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}
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SkISize onISize() override {
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return SkISize::Make(128*3, 128*4);
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}
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void onDraw(SkCanvas* canvas) override {
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sk_sp<SkColorSpace> wideGamut = SkColorSpace::MakeRGB(SkNamedTransferFn::kSRGB,
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SkNamedGamut::kAdobeRGB);
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sk_sp<SkColorSpace> wideGamutLinear = wideGamut->makeLinearGamma();
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// Lazy images
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sk_sp<SkImage> opaqueImage = GetResourceAsImage("images/mandrill_128.png");
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sk_sp<SkImage> premulImage = GetResourceAsImage("images/color_wheel.png");
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if (!opaqueImage || !premulImage) {
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return;
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}
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canvas->drawImage(opaqueImage, 0.0f, 0.0f);
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canvas->drawImage(make_color_space(opaqueImage, wideGamut), 128.0f, 0.0f);
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canvas->drawImage(make_color_space(opaqueImage, wideGamutLinear), 256.0f, 0.0f);
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canvas->drawImage(premulImage, 0.0f, 128.0f);
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canvas->drawImage(make_color_space(premulImage, wideGamut), 128.0f, 128.0f);
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canvas->drawImage(make_color_space(premulImage, wideGamutLinear), 256.0f, 128.0f);
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canvas->translate(0.0f, 256.0f);
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// Raster images
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opaqueImage = make_raster_image("images/mandrill_128.png");
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premulImage = make_raster_image("images/color_wheel.png");
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canvas->drawImage(opaqueImage, 0.0f, 0.0f);
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canvas->drawImage(make_color_space(opaqueImage, wideGamut), 128.0f, 0.0f);
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canvas->drawImage(make_color_space(opaqueImage, wideGamutLinear), 256.0f, 0.0f);
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canvas->drawImage(premulImage, 0.0f, 128.0f);
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canvas->drawImage(make_color_space(premulImage, wideGamut), 128.0f, 128.0f);
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canvas->drawImage(make_color_space(premulImage, wideGamutLinear), 256.0f, 128.0f);
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}
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private:
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typedef skiagm::GM INHERITED;
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};
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DEF_GM(return new MakeCSGM;)
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