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/*
* 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 "Benchmark.h"
#include "SkCanvas.h"
#include "SkPerlinNoiseShader.h"
class PerlinNoiseBench : public Benchmark {
SkISize fSize;
public:
PerlinNoiseBench() {
fSize = SkISize::Make(80, 80);
}
protected:
virtual const char* onGetName() SK_OVERRIDE {
return "perlinnoise";
}
virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
this->test(loops, canvas, 0, 0, SkPerlinNoiseShader::kFractalNoise_Type,
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(const int loops, SkCanvas* canvas, int x, int y, SkPerlinNoiseShader::Type type,
float baseFrequencyX, float baseFrequencyY, int numOctaves, float seed,
bool stitchTiles) {
SkShader* shader = (type == SkPerlinNoiseShader::kFractalNoise_Type) ?
SkPerlinNoiseShader::CreateFractalNoise(baseFrequencyX, baseFrequencyY, numOctaves,
seed, stitchTiles ? &fSize : NULL) :
SkPerlinNoiseShader::CreateTurbulence(baseFrequencyX, baseFrequencyY, numOctaves,
seed, stitchTiles ? &fSize : NULL);
SkPaint paint;
paint.setShader(shader)->unref();
for (int i = 0; i < loops; i++) {
this->drawClippedRect(canvas, x, y, paint);
}
}
typedef Benchmark INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
DEF_BENCH( return new PerlinNoiseBench(); )
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