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
|
/*
* Copyright 2013 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 "SkCanvas.h"
#include "SkGraphics.h"
#include "SkTypeface.h"
// GM to stress the GPU font cache
static SkScalar draw_string(SkCanvas* canvas, const SkString& text, SkScalar x,
SkScalar y, const SkPaint& paint) {
canvas->drawText(text.c_str(), text.size(), x, y, paint);
return x + paint.measureText(text.c_str(), text.size());
}
class FontCacheGM : public skiagm::GM {
public:
FontCacheGM() {
fTypefaces[0] = nullptr;
fTypefaces[1] = nullptr;
}
virtual ~FontCacheGM() {
SkSafeUnref(fTypefaces[0]);
SkSafeUnref(fTypefaces[1]);
}
protected:
SkString onShortName() override {
return SkString("fontcache");
}
SkISize onISize() override {
return SkISize::Make(1280, 640);
}
void onOnceBeforeDraw() override {
fTypefaces[0] = sk_tool_utils::create_portable_typeface("serif", SkTypeface::kItalic);
fTypefaces[1] = sk_tool_utils::create_portable_typeface("sans-serif", SkTypeface::kItalic);
}
void onDraw(SkCanvas* canvas) override {
SkPaint paint;
paint.setAntiAlias(true);
paint.setLCDRenderText(true);
paint.setSubpixelText(true);
paint.setTypeface(fTypefaces[0]);
paint.setTextSize(192);
// Make sure the nul character does not cause problems.
paint.measureText("\0", 1);
SkScalar x = 20;
SkScalar y = 128;
SkString text("ABCDEFGHIJ");
draw_string(canvas, text, x, y, paint);
y += 100;
SkString text2("KLMNOPQRS");
draw_string(canvas, text2, x, y, paint);
y += 100;
SkString text3("TUVWXYZ012");
draw_string(canvas, text3, x, y, paint);
y += 100;
paint.setTypeface(fTypefaces[1]);
draw_string(canvas, text, x, y, paint);
y += 100;
draw_string(canvas, text2, x, y, paint);
y += 100;
draw_string(canvas, text3, x, y, paint);
y += 100;
}
private:
SkTypeface* fTypefaces[2];
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new FontCacheGM;)
|
