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.h"
12 #include "SkImage.h"
13 #include "SkImagePriv.h"
14
make_raster_image(const char * path)15 sk_sp<SkImage> make_raster_image(const char* path) {
16 sk_sp<SkData> resourceData = GetResourceAsData(path);
17 std::unique_ptr<SkCodec> codec = SkCodec::MakeFromData(resourceData);
18
19 SkBitmap bitmap;
20 bitmap.allocPixels(codec->getInfo());
21
22 codec->getPixels(codec->getInfo(), bitmap.getPixels(), bitmap.rowBytes());
23 return SkImage::MakeFromBitmap(bitmap);
24 }
25
make_color_space(sk_sp<SkImage> orig,sk_sp<SkColorSpace> colorSpace)26 sk_sp<SkImage> make_color_space(sk_sp<SkImage> orig, sk_sp<SkColorSpace> colorSpace) {
27 sk_sp<SkImage> xform = orig->makeColorSpace(colorSpace);
28
29 // Assign an sRGB color space on the xformed image, so we can see the effects of the xform
30 // when we draw.
31 sk_sp<SkColorSpace> srgb = SkColorSpace::MakeSRGB();
32 if (colorSpace->gammaIsLinear()) {
33 srgb = SkColorSpace::MakeSRGBLinear();
34 }
35 return SkImageMakeRasterCopyAndAssignColorSpace(xform.get(), srgb.get());
36 }
37
38 class MakeCSGM : public skiagm::GM {
39 public:
MakeCSGM()40 MakeCSGM() {}
41
42 protected:
onShortName()43 SkString onShortName() override {
44 return SkString("makecolorspace");
45 }
46
onISize()47 SkISize onISize() override {
48 return SkISize::Make(128*3, 128*4);
49 }
50
onDraw(SkCanvas * canvas)51 void onDraw(SkCanvas* canvas) override {
52 sk_sp<SkColorSpace> wideGamut = SkColorSpace::MakeRGB(SkNamedTransferFn::kSRGB,
53 SkNamedGamut::kAdobeRGB);
54 sk_sp<SkColorSpace> wideGamutLinear = wideGamut->makeLinearGamma();
55
56 // Lazy images
57 sk_sp<SkImage> opaqueImage = GetResourceAsImage("images/mandrill_128.png");
58 sk_sp<SkImage> premulImage = GetResourceAsImage("images/color_wheel.png");
59 if (!opaqueImage || !premulImage) {
60 return;
61 }
62 canvas->drawImage(opaqueImage, 0.0f, 0.0f);
63 canvas->drawImage(make_color_space(opaqueImage, wideGamut), 128.0f, 0.0f);
64 canvas->drawImage(make_color_space(opaqueImage, wideGamutLinear), 256.0f, 0.0f);
65 canvas->drawImage(premulImage, 0.0f, 128.0f);
66 canvas->drawImage(make_color_space(premulImage, wideGamut), 128.0f, 128.0f);
67 canvas->drawImage(make_color_space(premulImage, wideGamutLinear), 256.0f, 128.0f);
68 canvas->translate(0.0f, 256.0f);
69
70 // Raster images
71 opaqueImage = make_raster_image("images/mandrill_128.png");
72 premulImage = make_raster_image("images/color_wheel.png");
73 canvas->drawImage(opaqueImage, 0.0f, 0.0f);
74 canvas->drawImage(make_color_space(opaqueImage, wideGamut), 128.0f, 0.0f);
75 canvas->drawImage(make_color_space(opaqueImage, wideGamutLinear), 256.0f, 0.0f);
76 canvas->drawImage(premulImage, 0.0f, 128.0f);
77 canvas->drawImage(make_color_space(premulImage, wideGamut), 128.0f, 128.0f);
78 canvas->drawImage(make_color_space(premulImage, wideGamutLinear), 256.0f, 128.0f);
79 }
80
81 private:
82 typedef skiagm::GM INHERITED;
83 };
84
85 DEF_GM(return new MakeCSGM;)
86
87 DEF_SIMPLE_GM_BG(makecolortypeandspace, canvas, 128 * 3, 128 * 4, SK_ColorWHITE) {
88 sk_sp<SkImage> images[] = {
89 GetResourceAsImage("images/mandrill_128.png"),
90 GetResourceAsImage("images/color_wheel.png"),
91 };
92 auto rec2020 = SkColorSpace::MakeRGB(SkNamedTransferFn::kSRGB, SkNamedGamut::kRec2020);
93
94 // Use the lazy images on the first iteration, and concrete (raster/GPU) images on the second
95 for (bool lazy : {true, false}) {
96 for (int j = 0; j < 2; ++j) {
97 const SkImage* image = images[j].get();
98 if (!image) {
99 // Can happen on bots that abandon the GPU context
100 continue;
101 }
102
103 // Unmodified
104 canvas->drawImage(image, 0, 0);
105
106 // Change the color type/space of the image in a couple ways. In both cases, codec
107 // may fail, because we refude to decode transparent sources to opaque color types.
108 // Guard against that, to avoid cascading failures in DDL.
109
110 // 565 in a wide color space (should be visibly quantized). Fails with the color_wheel,
111 // because of the codec issues mentioned above.
112 auto image565 = image->makeColorTypeAndColorSpace(kRGB_565_SkColorType, rec2020);
113 if (!lazy || image565->makeRasterImage()) {
114 canvas->drawImage(image565, 128, 0);
115 }
116
117 // Grayscale in the original color space. This fails in even more cases, due to the
118 // above opaque issue, and because Ganesh doesn't support drawing to gray, at all.
119 auto imageGray = image->makeColorTypeAndColorSpace(kGray_8_SkColorType,
120 image->refColorSpace());
121 if (!lazy || imageGray->makeRasterImage()) {
122 canvas->drawImage(imageGray, 256, 0);
123 }
124
125 images[j] = canvas->getGrContext()
126 ? image->makeTextureImage(canvas->getGrContext(), nullptr)
127 : image->makeRasterImage();
128
129 canvas->translate(0, 128);
130 }
131 }
132 }
133
