1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
/*
* Copyright 2015 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 "SkImage.h"
#include "SkImageSource.h"
#include "SkSurface.h"
namespace skiagm {
// This GM reproduces the issue in crbug.com/472795. The SkImageSource image
// is shifted for high quality mode between cpu and gpu.
class ImageSourceGM : public GM {
public:
ImageSourceGM(const char* suffix, SkFilterQuality filter) : fSuffix(suffix), fFilter(filter) {
this->setBGColor(0xFFFFFFFF);
}
protected:
SkString onShortName() override {
SkString name("imagesrc2_");
name.append(fSuffix);
return name;
}
SkISize onISize() override { return SkISize::Make(256, 256); }
// Create an image with high frequency vertical stripes
void onOnceBeforeDraw() override {
constexpr SkPMColor gColors[] = {
SK_ColorRED, SK_ColorGRAY,
SK_ColorGREEN, SK_ColorGRAY,
SK_ColorBLUE, SK_ColorGRAY,
SK_ColorCYAN, SK_ColorGRAY,
SK_ColorMAGENTA, SK_ColorGRAY,
SK_ColorYELLOW, SK_ColorGRAY,
SK_ColorWHITE, SK_ColorGRAY,
};
auto surface(SkSurface::MakeRasterN32Premul(kImageSize, kImageSize));
SkCanvas* canvas = surface->getCanvas();
int curColor = 0;
for (int x = 0; x < kImageSize; x += 3) {
SkRect r = SkRect::MakeXYWH(SkIntToScalar(x), SkIntToScalar(0),
SkIntToScalar(3), SkIntToScalar(kImageSize));
SkPaint p;
p.setColor(gColors[curColor]);
canvas->drawRect(r, p);
curColor = (curColor+1) % SK_ARRAY_COUNT(gColors);
}
fImage = surface->makeImageSnapshot();
}
void onDraw(SkCanvas* canvas) override {
const SkRect srcRect = SkRect::MakeLTRB(0, 0,
SkIntToScalar(kImageSize),
SkIntToScalar(kImageSize));
const SkRect dstRect = SkRect::MakeLTRB(0.75f, 0.75f, 225.75f, 225.75f);
SkPaint p;
p.setImageFilter(SkImageSource::Make(fImage, srcRect, dstRect, fFilter));
canvas->saveLayer(nullptr, &p);
canvas->restore();
}
private:
static constexpr int kImageSize = 503;
SkString fSuffix;
SkFilterQuality fFilter;
sk_sp<SkImage> fImage;
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new ImageSourceGM("none", kNone_SkFilterQuality);)
DEF_GM(return new ImageSourceGM("low", kLow_SkFilterQuality);)
DEF_GM(return new ImageSourceGM("med", kMedium_SkFilterQuality);)
DEF_GM(return new ImageSourceGM("high", kHigh_SkFilterQuality);)
}
|
