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