1 /*
2 * Copyright 2014 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 "SkBlendModePriv.h"
10 #include "SkCanvas.h"
11 #include "SkPaint.h"
12
13 #include <ctype.h>
14
15 /** This benchmark tests rendering rotated rectangles. It can optionally apply AA and/or change the
16 paint color between each rect in different ways using the ColorType enum. The xfermode used can
17 be specified as well.
18 */
19
20 enum ColorType {
21 kConstantOpaque_ColorType,
22 kConstantTransparent_ColorType,
23 kChangingOpaque_ColorType,
24 kChangingTransparent_ColorType,
25 kAlternatingOpaqueAndTransparent_ColorType,
26 };
27
start_color(ColorType ct)28 static inline SkColor start_color(ColorType ct) {
29 switch (ct) {
30 case kConstantOpaque_ColorType:
31 case kChangingOpaque_ColorType:
32 case kAlternatingOpaqueAndTransparent_ColorType:
33 return 0xFFA07040;
34 case kConstantTransparent_ColorType:
35 case kChangingTransparent_ColorType:
36 return 0x80A07040;
37 }
38 SK_ABORT("Shouldn't reach here.");
39 return 0;
40 }
41
advance_color(SkColor old,ColorType ct,int step)42 static inline SkColor advance_color(SkColor old, ColorType ct, int step) {
43 if (kAlternatingOpaqueAndTransparent_ColorType == ct) {
44 ct = (step & 0x1) ? kChangingOpaque_ColorType : kChangingTransparent_ColorType ;
45 }
46 switch (ct) {
47 case kConstantOpaque_ColorType:
48 case kConstantTransparent_ColorType:
49 return old;
50 case kChangingOpaque_ColorType:
51 return 0xFF000000 | (old + 0x00010307);
52 case kChangingTransparent_ColorType:
53 return (0x00FFFFFF & (old + 0x00010307)) | 0x80000000;
54 case kAlternatingOpaqueAndTransparent_ColorType:
55 SK_ABORT("Can't get here");
56 }
57 SK_ABORT("Shouldn't reach here.");
58 return 0;
59 }
60
to_lower(const char * str)61 static SkString to_lower(const char* str) {
62 SkString lower(str);
63 for (size_t i = 0; i < lower.size(); i++) {
64 lower[i] = tolower(lower[i]);
65 }
66 return lower;
67 }
68
69 class RotRectBench: public Benchmark {
70 public:
RotRectBench(bool aa,ColorType ct,SkBlendMode mode)71 RotRectBench(bool aa, ColorType ct, SkBlendMode mode)
72 : fAA(aa)
73 , fColorType(ct)
74 , fMode(mode) {
75 this->makeName();
76 }
77
78 protected:
onGetName()79 const char* onGetName() override { return fName.c_str(); }
80
onDraw(int loops,SkCanvas * canvas)81 void onDraw(int loops, SkCanvas* canvas) override {
82 SkPaint paint;
83 paint.setAntiAlias(fAA);
84 paint.setBlendMode(fMode);
85 SkColor color = start_color(fColorType);
86
87 int w = this->getSize().x();
88 int h = this->getSize().y();
89
90 static const SkScalar kRectW = 25.1f;
91 static const SkScalar kRectH = 25.9f;
92
93 SkMatrix rotate;
94 // This value was chosen so that we frequently hit the axis-aligned case.
95 rotate.setRotate(30.f, kRectW / 2, kRectH / 2);
96 SkMatrix m = rotate;
97
98 SkScalar tx = 0, ty = 0;
99
100 for (int i = 0; i < loops; ++i) {
101 canvas->save();
102 canvas->translate(tx, ty);
103 canvas->concat(m);
104 paint.setColor(color);
105 color = advance_color(color, fColorType, i);
106
107 canvas->drawRect(SkRect::MakeWH(kRectW, kRectH), paint);
108 canvas->restore();
109
110 tx += kRectW + 2;
111 if (tx > w) {
112 tx = 0;
113 ty += kRectH + 2;
114 if (ty > h) {
115 ty = 0;
116 }
117 }
118
119 m.postConcat(rotate);
120 }
121 }
122
123 private:
makeName()124 void makeName() {
125 fName = "rotated_rects";
126 if (fAA) {
127 fName.append("_aa");
128 } else {
129 fName.append("_bw");
130 }
131 switch (fColorType) {
132 case kConstantOpaque_ColorType:
133 fName.append("_same_opaque");
134 break;
135 case kConstantTransparent_ColorType:
136 fName.append("_same_transparent");
137 break;
138 case kChangingOpaque_ColorType:
139 fName.append("_changing_opaque");
140 break;
141 case kChangingTransparent_ColorType:
142 fName.append("_changing_transparent");
143 break;
144 case kAlternatingOpaqueAndTransparent_ColorType:
145 fName.append("_alternating_transparent_and_opaque");
146 break;
147 }
148 fName.appendf("_%s", to_lower(SkBlendMode_Name(fMode)).c_str());
149 }
150
151 bool fAA;
152 ColorType fColorType;
153 SkBlendMode fMode;
154 SkString fName;
155
156 typedef Benchmark INHERITED;
157 };
158
159 // Choose kSrcOver because it always allows coverage and alpha to be conflated. kSrc only allows
160 // conflation when opaque, and kDarken because it isn't possilbe with standard GL blending.
161 DEF_BENCH(return new RotRectBench(true, kConstantOpaque_ColorType, SkBlendMode::kSrcOver);)
162 DEF_BENCH(return new RotRectBench(true, kConstantTransparent_ColorType, SkBlendMode::kSrcOver);)
163 DEF_BENCH(return new RotRectBench(true, kChangingOpaque_ColorType, SkBlendMode::kSrcOver);)
164 DEF_BENCH(return new RotRectBench(true, kChangingTransparent_ColorType, SkBlendMode::kSrcOver);)
165 DEF_BENCH(return new RotRectBench(true, kAlternatingOpaqueAndTransparent_ColorType, SkBlendMode::kSrcOver);)
166
167 DEF_BENCH(return new RotRectBench(false, kConstantOpaque_ColorType, SkBlendMode::kSrcOver);)
168 DEF_BENCH(return new RotRectBench(false, kConstantTransparent_ColorType, SkBlendMode::kSrcOver);)
169 DEF_BENCH(return new RotRectBench(false, kChangingOpaque_ColorType, SkBlendMode::kSrcOver);)
170 DEF_BENCH(return new RotRectBench(false, kChangingTransparent_ColorType, SkBlendMode::kSrcOver);)
171 DEF_BENCH(return new RotRectBench(false, kAlternatingOpaqueAndTransparent_ColorType, SkBlendMode::kSrcOver);)
172
173 DEF_BENCH(return new RotRectBench(true, kConstantOpaque_ColorType, SkBlendMode::kSrc);)
174 DEF_BENCH(return new RotRectBench(true, kConstantTransparent_ColorType, SkBlendMode::kSrc);)
175 DEF_BENCH(return new RotRectBench(true, kChangingOpaque_ColorType, SkBlendMode::kSrc);)
176 DEF_BENCH(return new RotRectBench(true, kChangingTransparent_ColorType, SkBlendMode::kSrc);)
177 DEF_BENCH(return new RotRectBench(true, kAlternatingOpaqueAndTransparent_ColorType, SkBlendMode::kSrc);)
178
179 DEF_BENCH(return new RotRectBench(false, kConstantOpaque_ColorType, SkBlendMode::kSrc);)
180 DEF_BENCH(return new RotRectBench(false, kConstantTransparent_ColorType, SkBlendMode::kSrc);)
181 DEF_BENCH(return new RotRectBench(false, kChangingOpaque_ColorType, SkBlendMode::kSrc);)
182 DEF_BENCH(return new RotRectBench(false, kChangingTransparent_ColorType, SkBlendMode::kSrc);)
183 DEF_BENCH(return new RotRectBench(false, kAlternatingOpaqueAndTransparent_ColorType, SkBlendMode::kSrc);)
184
185 DEF_BENCH(return new RotRectBench(true, kConstantOpaque_ColorType, SkBlendMode::kDarken);)
186 DEF_BENCH(return new RotRectBench(true, kConstantTransparent_ColorType, SkBlendMode::kDarken);)
187 DEF_BENCH(return new RotRectBench(true, kChangingOpaque_ColorType, SkBlendMode::kDarken);)
188 DEF_BENCH(return new RotRectBench(true, kChangingTransparent_ColorType, SkBlendMode::kDarken);)
189 DEF_BENCH(return new RotRectBench(true, kAlternatingOpaqueAndTransparent_ColorType, SkBlendMode::kDarken);)
190
191 DEF_BENCH(return new RotRectBench(false, kConstantOpaque_ColorType, SkBlendMode::kDarken);)
192 DEF_BENCH(return new RotRectBench(false, kConstantTransparent_ColorType, SkBlendMode::kDarken);)
193 DEF_BENCH(return new RotRectBench(false, kChangingOpaque_ColorType, SkBlendMode::kDarken);)
194 DEF_BENCH(return new RotRectBench(false, kChangingTransparent_ColorType, SkBlendMode::kDarken);)
195 DEF_BENCH(return new RotRectBench(false, kAlternatingOpaqueAndTransparent_ColorType, SkBlendMode::kDarken);)
196