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