1
2 /*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9 #include "Benchmark.h"
10 #include "Resources.h"
11 #include "SkCanvas.h"
12 #include "SkPaint.h"
13 #include "SkRandom.h"
14 #include "SkStream.h"
15 #include "SkString.h"
16 #include "SkTemplates.h"
17 #include "SkTypeface.h"
18
19 enum FontQuality {
20 kBW,
21 kAA,
22 kLCD,
23 };
24
fontQualityName(const SkPaint & paint)25 static const char* fontQualityName(const SkPaint& paint) {
26 if (!paint.isAntiAlias()) {
27 return "BW";
28 }
29 if (paint.isLCDRenderText()) {
30 return "LCD";
31 }
32 return "AA";
33 }
34
35 /* Some considerations for performance:
36 short -vs- long strings (measuring overhead)
37 tiny -vs- large pointsize (measure blit -vs- overhead)
38 1 -vs- many point sizes (measure cache lookup)
39 normal -vs- subpixel -vs- lineartext (minor)
40 force purge after each draw to measure scaler
41 textencoding?
42 text -vs- postext - pathtext
43 */
44 class TextBench : public Benchmark {
45 SkPaint fPaint;
46 SkString fText;
47 SkString fName;
48 FontQuality fFQ;
49 bool fDoPos;
50 bool fDoColorEmoji;
51 SkAutoTUnref<SkTypeface> fColorEmojiTypeface;
52 SkPoint* fPos;
53 public:
TextBench(const char text[],int ps,SkColor color,FontQuality fq,bool doColorEmoji=false,bool doPos=false)54 TextBench(const char text[], int ps,
55 SkColor color, FontQuality fq, bool doColorEmoji = false, bool doPos = false)
56 : fText(text)
57 , fFQ(fq)
58 , fDoPos(doPos)
59 , fDoColorEmoji(doColorEmoji)
60 , fPos(nullptr) {
61 fPaint.setAntiAlias(kBW != fq);
62 fPaint.setLCDRenderText(kLCD == fq);
63 fPaint.setTextSize(SkIntToScalar(ps));
64 fPaint.setColor(color);
65 }
66
~TextBench()67 virtual ~TextBench() {
68 delete[] fPos;
69 }
70
71 protected:
onDelayedSetup()72 void onDelayedSetup() override {
73 if (fDoColorEmoji) {
74 SkASSERT(kBW == fFQ);
75 fColorEmojiTypeface.reset(GetResourceAsTypeface("/fonts/Funkster.ttf"));
76 }
77
78 if (fDoPos) {
79 size_t len = fText.size();
80 SkScalar* adv = new SkScalar[len];
81 fPaint.getTextWidths(fText.c_str(), len, adv);
82 fPos = new SkPoint[len];
83 SkScalar x = 0;
84 for (size_t i = 0; i < len; ++i) {
85 fPos[i].set(x, SkIntToScalar(50));
86 x += adv[i];
87 }
88 delete[] adv;
89 }
90 }
91
92
onGetName()93 const char* onGetName() override {
94 fName.printf("text_%g", SkScalarToFloat(fPaint.getTextSize()));
95 if (fDoPos) {
96 fName.append("_pos");
97 }
98 fName.appendf("_%s", fontQualityName(fPaint));
99 if (SK_ColorBLACK == fPaint.getColor()) {
100 fName.append("_BK");
101 } else if (SK_ColorWHITE == fPaint.getColor()) {
102 fName.append("_WT");
103 } else {
104 fName.appendf("_%02X", fPaint.getAlpha());
105 }
106
107 if (fDoColorEmoji) {
108 fName.append("_ColorEmoji");
109 }
110
111 return fName.c_str();
112 }
113
onDraw(int loops,SkCanvas * canvas)114 void onDraw(int loops, SkCanvas* canvas) override {
115 const SkIPoint dim = this->getSize();
116 SkRandom rand;
117
118 SkPaint paint(fPaint);
119 this->setupPaint(&paint);
120 // explicitly need these
121 paint.setColor(fPaint.getColor());
122 paint.setAntiAlias(kBW != fFQ);
123 paint.setLCDRenderText(kLCD == fFQ);
124
125 if (fDoColorEmoji && fColorEmojiTypeface) {
126 paint.setTypeface(fColorEmojiTypeface);
127 }
128
129 const SkScalar x0 = SkIntToScalar(-10);
130 const SkScalar y0 = SkIntToScalar(-10);
131
132 if (fDoPos) {
133 // realistically, the matrix is often at least translated, so we
134 // do that since it exercises different code in drawPosText.
135 canvas->translate(SK_Scalar1, SK_Scalar1);
136 }
137
138 for (int i = 0; i < loops; i++) {
139 if (fDoPos) {
140 canvas->drawPosText(fText.c_str(), fText.size(), fPos, paint);
141 } else {
142 SkScalar x = x0 + rand.nextUScalar1() * dim.fX;
143 SkScalar y = y0 + rand.nextUScalar1() * dim.fY;
144 canvas->drawText(fText.c_str(), fText.size(), x, y, paint);
145 }
146 }
147 }
148
149 private:
150 typedef Benchmark INHERITED;
151 };
152
153 ///////////////////////////////////////////////////////////////////////////////
154
155 #define STR "Hamburgefons"
156
157 DEF_BENCH( return new TextBench(STR, 16, 0xFFFFFFFF, kBW); )
158 DEF_BENCH( return new TextBench(STR, 16, 0xFF000000, kBW); )
159 DEF_BENCH( return new TextBench(STR, 16, 0xFFFF0000, kBW); )
160 DEF_BENCH( return new TextBench(STR, 16, 0x88FF0000, kBW); )
161
162 DEF_BENCH( return new TextBench(STR, 16, 0xFFFFFFFF, kAA); )
163 DEF_BENCH( return new TextBench(STR, 16, 0xFF000000, kAA); )
164 DEF_BENCH( return new TextBench(STR, 16, 0xFFFF0000, kAA); )
165 DEF_BENCH( return new TextBench(STR, 16, 0x88FF0000, kAA); )
166
167 DEF_BENCH( return new TextBench(STR, 16, 0xFFFFFFFF, kLCD); )
168 DEF_BENCH( return new TextBench(STR, 16, 0xFF000000, kLCD); )
169 DEF_BENCH( return new TextBench(STR, 16, 0xFFFF0000, kLCD); )
170 DEF_BENCH( return new TextBench(STR, 16, 0x88FF0000, kLCD); )
171
172 DEF_BENCH( return new TextBench(STR, 16, 0xFFFFFFFF, kBW, true); )
173 DEF_BENCH( return new TextBench(STR, 16, 0xFF000000, kBW, true); )
174 DEF_BENCH( return new TextBench(STR, 16, 0xFFFF0000, kBW, true); )
175 DEF_BENCH( return new TextBench(STR, 16, 0x88FF0000, kBW, true); )
176
177 DEF_BENCH( return new TextBench(STR, 16, 0xFF000000, kBW, true, true); )
178 DEF_BENCH( return new TextBench(STR, 16, 0xFF000000, kAA, false, true); )
179