1 /*
2 * Copyright 2015 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
9 #include "SkGlyphCache.h"
10
11 #include "Benchmark.h"
12 #include "SkCanvas.h"
13 #include "SkGlyphCache_Globals.h"
14 #include "SkGraphics.h"
15 #include "SkTaskGroup.h"
16 #include "SkTypeface.h"
17 #include "sk_tool_utils.h"
18
19
do_font_stuff(SkPaint * paint)20 static void do_font_stuff(SkPaint* paint) {
21 for (SkScalar i = 8; i < 64; i++) {
22 paint->setTextSize(i);
23 SkAutoGlyphCacheNoGamma autoCache(*paint, nullptr, nullptr);
24 SkGlyphCache* cache = autoCache.getCache();
25 uint16_t glyphs['z'];
26 for (int c = ' '; c < 'z'; c++) {
27 glyphs[c] = cache->unicharToGlyph(c);
28 }
29 for (int lookups = 0; lookups < 10; lookups++) {
30 for (int c = ' '; c < 'z'; c++) {
31 const SkGlyph& g = cache->getGlyphIDMetrics(glyphs[c]);
32 cache->findImage(g);
33 }
34 }
35
36 }
37 }
38
39 class SkGlyphCacheBasic : public Benchmark {
40 public:
SkGlyphCacheBasic(size_t cacheSize)41 explicit SkGlyphCacheBasic(size_t cacheSize) : fCacheSize(cacheSize) { }
42
43 protected:
onGetName()44 const char* onGetName() override {
45 fName.printf("SkGlyphCacheBasic%dK", (int)(fCacheSize >> 10));
46 return fName.c_str();
47 }
48
isSuitableFor(Backend backend)49 bool isSuitableFor(Backend backend) override {
50 return backend == kNonRendering_Backend;
51 }
52
onDraw(int loops,SkCanvas *)53 void onDraw(int loops, SkCanvas*) override {
54 size_t oldCacheLimitSize = SkGraphics::GetFontCacheLimit();
55 SkGraphics::SetFontCacheLimit(fCacheSize);
56 SkPaint paint;
57 paint.setAntiAlias(true);
58 paint.setSubpixelText(true);
59 paint.setTypeface(sk_tool_utils::create_portable_typeface(
60 "serif", SkFontStyle::FromOldStyle(SkTypeface::kItalic)));
61
62 for (int work = 0; work < loops; work++) {
63 do_font_stuff(&paint);
64 }
65 SkGraphics::SetFontCacheLimit(oldCacheLimitSize);
66 }
67
68 private:
69 typedef Benchmark INHERITED;
70 const size_t fCacheSize;
71 SkString fName;
72 };
73
74 class SkGlyphCacheStressTest : public Benchmark {
75 public:
SkGlyphCacheStressTest(int cacheSize)76 explicit SkGlyphCacheStressTest(int cacheSize) : fCacheSize(cacheSize) { }
77
78 protected:
onGetName()79 const char* onGetName() override {
80 fName.printf("SkGlyphCacheStressTest%dK", (int)(fCacheSize >> 10));
81 return fName.c_str();
82 }
83
isSuitableFor(Backend backend)84 bool isSuitableFor(Backend backend) override {
85 return backend == kNonRendering_Backend;
86 }
87
onDraw(int loops,SkCanvas *)88 void onDraw(int loops, SkCanvas*) override {
89 size_t oldCacheLimitSize = SkGraphics::GetFontCacheLimit();
90 SkGraphics::SetFontCacheLimit(fCacheSize);
91 sk_sp<SkTypeface> typefaces[] =
92 {sk_tool_utils::create_portable_typeface("serif",
93 SkFontStyle::FromOldStyle(SkTypeface::kItalic)),
94 sk_tool_utils::create_portable_typeface("sans-serif",
95 SkFontStyle::FromOldStyle(SkTypeface::kItalic))};
96
97 for (int work = 0; work < loops; work++) {
98 SkTaskGroup().batch(16, [&](int threadIndex) {
99 SkPaint paint;
100 paint.setAntiAlias(true);
101 paint.setSubpixelText(true);
102 paint.setTypeface(typefaces[threadIndex % 2]);
103 do_font_stuff(&paint);
104 });
105 }
106 SkGraphics::SetFontCacheLimit(oldCacheLimitSize);
107 }
108
109 private:
110 typedef Benchmark INHERITED;
111 const size_t fCacheSize;
112 SkString fName;
113 };
114
115 DEF_BENCH( return new SkGlyphCacheBasic(256 * 1024); )
116 DEF_BENCH( return new SkGlyphCacheBasic(32 * 1024 * 1024); )
117 DEF_BENCH( return new SkGlyphCacheStressTest(256 * 1024); )
118 DEF_BENCH( return new SkGlyphCacheStressTest(32 * 1024 * 1024); )
119