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1 | |
2 /* | |
3 * Copyright 2013 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 "SkBenchmark.h" | |
10 #include "SkCanvas.h" | |
11 #include "SkPaint.h" | |
12 #include "SkRandom.h" | |
13 #include "SkString.h" | |
14 #include "SkXfermode.h" | |
15 | |
16 // Benchmark that draws non-AA rects with an SkXfermode::Mode | |
17 class XfermodeBench : public SkBenchmark { | |
18 public: | |
19 XfermodeBench(void* param, SkXfermode::Mode mode) : SkBenchmark(param) { | |
20 fXfermode.reset(SkXfermode::Create(mode)); | |
21 SkASSERT(NULL != fXfermode.get() || SkXfermode::kSrcOver_Mode == mode); | |
22 fName.printf("Xfermode_%s", SkXfermode::ModeName(mode)); | |
23 } | |
24 | |
25 protected: | |
26 virtual const char* onGetName() SK_OVERRIDE { return fName.c_str(); } | |
27 | |
28 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { | |
29 SkISize size = canvas->getDeviceSize(); | |
30 SkMWCRandom random; | |
31 for (int i = 0; i < kNumRects; ++i) { | |
32 SkPaint paint; | |
33 paint.setXfermode(fXfermode.get()); | |
34 paint.setColor(random.nextU()); | |
35 SkScalar w = random.nextRangeScalar(SkIntToScalar(kMinSize), SkIntTo Scalar(kMaxSize)); | |
36 SkScalar h = random.nextRangeScalar(SkIntToScalar(kMinSize), SkIntTo Scalar(kMaxSize)); | |
37 SkRect rect = SkRect::MakeXYWH( | |
38 random.nextUScalar1() * (size.fWidth - w), | |
39 random.nextUScalar1() * (size.fHeight - h), | |
40 w, | |
41 h | |
42 ); | |
43 canvas->drawRect(rect, paint); | |
44 } | |
45 } | |
46 | |
47 private: | |
48 enum { | |
49 kNumRects = SkBENCHLOOP(1000), | |
50 kMinSize = 10, | |
51 kMaxSize = 400, | |
52 }; | |
53 SkAutoTUnref<SkXfermode> fXfermode; | |
54 SkString fName; | |
55 | |
56 typedef SkBenchmark INHERITED; | |
57 }; | |
58 | |
59 ////////////////////////////////////////////////////////////////////////////// | |
60 | |
61 | |
robertphillips
2013/03/31 16:44:13
What about just adding a bench for each xfermode (
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62 // These modes were chosen because they are expected to be successively harder f or the GPU. | |
63 // kSrc can disable blending, kSrcOver cannot, kDarken requires reading the dst pixel in the shader. | |
64 static SkBenchmark* Fact0(void* p) { return new XfermodeBench(p, SkXfermode::kSr c_Mode); } | |
65 static SkBenchmark* Fact1(void* p) { return new XfermodeBench(p, SkXfermode::kSr cOver_Mode); } | |
66 static SkBenchmark* Fact2(void* p) { return new XfermodeBench(p, SkXfermode::kDa rken_Mode); } | |
67 | |
68 static BenchRegistry gReg0(Fact0); | |
69 static BenchRegistry gReg1(Fact1); | |
70 static BenchRegistry gReg2(Fact2); | |
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