| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| #include "bench/Benchmark.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkShader.h" |
| #include "include/effects/SkPerlinNoiseShader.h" |
| |
| class PerlinNoiseBench : public Benchmark { |
| SkISize fSize; |
| |
| public: |
| PerlinNoiseBench() { |
| fSize = SkISize::Make(80, 80); |
| } |
| |
| protected: |
| const char* onGetName() override { |
| return "perlinnoise"; |
| } |
| |
| void onDraw(int loops, SkCanvas* canvas) override { |
| this->test(loops, canvas, 0, 0, 0.1f, 0.1f, 3, 0, false); |
| } |
| |
| private: |
| void drawClippedRect(SkCanvas* canvas, int x, int y, const SkPaint& paint) { |
| canvas->save(); |
| canvas->clipRect(SkRect::MakeXYWH(SkIntToScalar(x), SkIntToScalar(y), |
| SkIntToScalar(fSize.width()), SkIntToScalar(fSize.height()))); |
| SkRect r = SkRect::MakeXYWH(SkIntToScalar(x), SkIntToScalar(y), |
| SkIntToScalar(fSize.width()), |
| SkIntToScalar(fSize.height())); |
| canvas->drawRect(r, paint); |
| canvas->restore(); |
| } |
| |
| void test(int loops, SkCanvas* canvas, int x, int y, |
| float baseFrequencyX, float baseFrequencyY, int numOctaves, float seed, |
| bool stitchTiles) { |
| SkPaint paint; |
| paint.setShader(SkPerlinNoiseShader::MakeFractalNoise(baseFrequencyX, baseFrequencyY, |
| numOctaves, seed, |
| stitchTiles ? &fSize : nullptr)); |
| for (int i = 0; i < loops; i++) { |
| this->drawClippedRect(canvas, x, y, paint); |
| } |
| } |
| |
| using INHERITED = Benchmark; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_BENCH( return new PerlinNoiseBench(); ) |