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
|
#include "gm.h"
namespace skiagm {
class NoColorBleedGM : public GM {
public:
NoColorBleedGM() {}
protected:
virtual SkString onShortName() {
return SkString("nocolorbleed");
}
virtual SkISize onISize() {
return make_isize(200, 200);
}
void drawBG(SkCanvas* canvas) {
canvas->drawColor(0xFFDDDDDD);
}
virtual void onDraw(SkCanvas* canvas) {
drawBG(canvas);
SkBitmap sprite;
sprite.setConfig(SkBitmap::kARGB_8888_Config, 4, 4, 4*sizeof(SkColor));
const SkColor spriteData[16] = {
SK_ColorBLACK, SK_ColorCYAN, SK_ColorMAGENTA, SK_ColorYELLOW,
SK_ColorBLACK, SK_ColorWHITE, SK_ColorBLACK, SK_ColorRED,
SK_ColorGREEN, SK_ColorBLACK, SK_ColorWHITE, SK_ColorBLUE,
SK_ColorYELLOW, SK_ColorMAGENTA, SK_ColorCYAN, SK_ColorBLACK
};
sprite.allocPixels();
sprite.lockPixels();
SkPMColor* addr = sprite.getAddr32(0, 0);
for (size_t i = 0; i < SK_ARRAY_COUNT(spriteData); ++i) {
addr[i] = SkPreMultiplyColor(spriteData[i]);
}
sprite.unlockPixels();
// We draw a magnified subrect of the sprite
// sample interpolation may cause color bleeding around edges
// the subrect is a pure white area
SkIRect srcRect;
SkRect dstRect;
SkPaint paint;
paint.setFilterBitmap(true);
//First row : full texture with and without filtering
srcRect.setXYWH(0, 0, 4, 4);
dstRect.setXYWH(SkIntToScalar(0), SkIntToScalar(0)
, SkIntToScalar(100), SkIntToScalar(100));
canvas->drawBitmapRect(sprite, &srcRect, dstRect, &paint);
dstRect.setXYWH(SkIntToScalar(100), SkIntToScalar(0)
, SkIntToScalar(100), SkIntToScalar(100));
canvas->drawBitmapRect(sprite, &srcRect, dstRect);
//Second row : sub rect of texture with and without filtering
srcRect.setXYWH(1, 1, 2, 2);
dstRect.setXYWH(SkIntToScalar(25), SkIntToScalar(125)
, SkIntToScalar(50), SkIntToScalar(50));
canvas->drawBitmapRect(sprite, &srcRect, dstRect, &paint);
dstRect.setXYWH(SkIntToScalar(125), SkIntToScalar(125)
, SkIntToScalar(50), SkIntToScalar(50));
canvas->drawBitmapRect(sprite, &srcRect, dstRect);
}
private:
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static GM* MyFactory(void*) { return new NoColorBleedGM; }
static GMRegistry reg(MyFactory);
}
|
