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| 1 /* |
| 2 * Copyright 2013 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 #include "SkBenchmark.h" |
| 8 #include "SkCanvas.h" |
| 9 #include "SkPerlinNoiseShader.h" |
| 10 |
| 11 class PerlinNoiseBench : public SkBenchmark { |
| 12 SkISize fSize; |
| 13 |
| 14 public: |
| 15 PerlinNoiseBench(void* param) : INHERITED(param) { |
| 16 fSize = SkISize::Make(80, 80); |
| 17 } |
| 18 |
| 19 protected: |
| 20 virtual const char* onGetName() SK_OVERRIDE { |
| 21 return "perlinnoise"; |
| 22 } |
| 23 |
| 24 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { |
| 25 this->test(canvas, 0, 0, SkPerlinNoiseShader::kFractalNoise_Type, |
| 26 0.1f, 0.1f, 3, 0, false); |
| 27 } |
| 28 |
| 29 private: |
| 30 void drawClippedRect(SkCanvas* canvas, int x, int y, const SkPaint& paint) { |
| 31 canvas->save(); |
| 32 canvas->clipRect(SkRect::MakeXYWH(SkIntToScalar(x), SkIntToScalar(y), |
| 33 SkIntToScalar(fSize.width()), SkIntToScalar(fSize.heigh
t()))); |
| 34 SkRect r = SkRect::MakeXYWH(SkIntToScalar(x), SkIntToScalar(y), |
| 35 SkIntToScalar(fSize.width()), |
| 36 SkIntToScalar(fSize.height())); |
| 37 canvas->drawRect(r, paint); |
| 38 canvas->restore(); |
| 39 } |
| 40 |
| 41 void test(SkCanvas* canvas, int x, int y, SkPerlinNoiseShader::Type type, |
| 42 float baseFrequencyX, float baseFrequencyY, int numOctaves, float
seed, |
| 43 bool stitchTiles) { |
| 44 SkShader* shader = (type == SkPerlinNoiseShader::kFractalNoise_Type) ? |
| 45 SkPerlinNoiseShader::CreateFractalNoise(baseFrequencyX, baseFrequenc
yY, numOctaves, |
| 46 seed, stitchTiles ? &fSize :
NULL) : |
| 47 SkPerlinNoiseShader::CreateTubulence(baseFrequencyX, baseFrequencyY,
numOctaves, |
| 48 seed, stitchTiles ? &fSize : NU
LL); |
| 49 SkPaint paint; |
| 50 paint.setShader(shader)->unref(); |
| 51 this->drawClippedRect(canvas, x, y, paint); |
| 52 } |
| 53 |
| 54 typedef SkBenchmark INHERITED; |
| 55 }; |
| 56 |
| 57 /////////////////////////////////////////////////////////////////////////////// |
| 58 |
| 59 DEF_BENCH( return new PerlinNoiseBench(p); ) |
| 60 |
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