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| 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 "SkGeometry.h" |
| 10 #include "SkRandom.h" |
| 11 #include "SkRect.h" |
| 12 |
| 13 class GeometryBench : public Benchmark { |
| 14 public: |
| 15 GeometryBench(const char suffix[]) : fVolatileInt(0) { |
| 16 fName.printf("geo_%s", suffix); |
| 17 } |
| 18 |
| 19 virtual const char* onGetName() SK_OVERRIDE { |
| 20 return fName.c_str(); |
| 21 } |
| 22 |
| 23 virtual bool isSuitableFor(Backend backend) SK_OVERRIDE { |
| 24 return kNonRendering_Backend == backend; |
| 25 } |
| 26 |
| 27 protected: |
| 28 volatile int fVolatileInt; |
| 29 |
| 30 /** |
| 31 * Subclasses can call this to try to defeat the optimizer (with some resul
t of their |
| 32 * inner loop), since it will fool the compiler into assuming that "n" is a
ctually |
| 33 * needed somewhere, and since this method is not const, the member fields
cannot |
| 34 * be assumed to be const before and after the call. |
| 35 */ |
| 36 virtual void virtualCallToFoilOptimizers(int n) { fVolatileInt += n; } |
| 37 |
| 38 private: |
| 39 SkString fName; |
| 40 }; |
| 41 |
| 42 class GeoRectBench : public GeometryBench { |
| 43 public: |
| 44 GeoRectBench(const char suffix[]) : GeometryBench(suffix) {} |
| 45 |
| 46 protected: |
| 47 SkRect fRects[2048]; |
| 48 |
| 49 virtual void onPreDraw() { |
| 50 const SkScalar min = -100; |
| 51 const SkScalar max = 100; |
| 52 SkRandom rand; |
| 53 for (size_t i = 0; i < SK_ARRAY_COUNT(fRects); ++i) { |
| 54 SkScalar x = rand.nextRangeScalar(min, max); |
| 55 SkScalar y = rand.nextRangeScalar(min, max); |
| 56 SkScalar w = rand.nextRangeScalar(min, max); |
| 57 SkScalar h = rand.nextRangeScalar(min, max); |
| 58 fRects[i].setXYWH(x, y, w, h); |
| 59 } |
| 60 } |
| 61 }; |
| 62 |
| 63 class GeoRectBench_intersect : public GeoRectBench { |
| 64 public: |
| 65 GeoRectBench_intersect() : GeoRectBench("rect_intersect") {} |
| 66 |
| 67 protected: |
| 68 virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE { |
| 69 for (int outer = 0; outer < loops; ++outer) { |
| 70 int count = 0; |
| 71 for (size_t i = 0; i < SK_ARRAY_COUNT(fRects); ++i) { |
| 72 SkRect r = fRects[0]; |
| 73 count += r.intersect(fRects[i]); |
| 74 } |
| 75 this->virtualCallToFoilOptimizers(count); |
| 76 } |
| 77 } |
| 78 }; |
| 79 |
| 80 class GeoRectBench_intersect_rect : public GeoRectBench { |
| 81 public: |
| 82 GeoRectBench_intersect_rect() : GeoRectBench("rect_intersect_rect") {} |
| 83 |
| 84 protected: |
| 85 virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE { |
| 86 for (int outer = 0; outer < loops; ++outer) { |
| 87 int count = 0; |
| 88 SkRect r; |
| 89 for (size_t i = 0; i < SK_ARRAY_COUNT(fRects); ++i) { |
| 90 count += r.intersect(fRects[0], fRects[i]); |
| 91 } |
| 92 this->virtualCallToFoilOptimizers(count); |
| 93 } |
| 94 } |
| 95 }; |
| 96 |
| 97 class GeoRectBench_Intersects : public GeoRectBench { |
| 98 public: |
| 99 GeoRectBench_Intersects() : GeoRectBench("rect_Intersects") {} |
| 100 |
| 101 protected: |
| 102 virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE { |
| 103 for (int outer = 0; outer < loops; ++outer) { |
| 104 int count = 0; |
| 105 for (size_t i = 0; i < SK_ARRAY_COUNT(fRects); ++i) { |
| 106 count += SkRect::Intersects(fRects[0], fRects[i]); |
| 107 } |
| 108 this->virtualCallToFoilOptimizers(count); |
| 109 } |
| 110 } |
| 111 }; |
| 112 |
| 113 DEF_BENCH( return new GeoRectBench_intersect; ) |
| 114 DEF_BENCH( return new GeoRectBench_intersect_rect; ) |
| 115 DEF_BENCH( return new GeoRectBench_Intersects; ) |
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