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/*
* Copyright 2014 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 "SkGeometry.h"
#include "SkRandom.h"
#include "SkRect.h"
class GeometryBench : public Benchmark {
public:
GeometryBench(const char suffix[]) : fVolatileInt(0) {
fName.printf("geo_%s", suffix);
}
const char* onGetName() SK_OVERRIDE {
return fName.c_str();
}
bool isSuitableFor(Backend backend) SK_OVERRIDE {
return kNonRendering_Backend == backend;
}
protected:
volatile int fVolatileInt;
/**
* Subclasses can call this to try to defeat the optimizer (with some result of their
* inner loop), since it will fool the compiler into assuming that "n" is actually
* needed somewhere, and since this method is not const, the member fields cannot
* be assumed to be const before and after the call.
*/
virtual void virtualCallToFoilOptimizers(int n) { fVolatileInt += n; }
private:
SkString fName;
};
class GeoRectBench : public GeometryBench {
public:
GeoRectBench(const char suffix[]) : GeometryBench(suffix) {}
protected:
SkRect fRects[2048];
virtual void onPreDraw() {
const SkScalar min = -100;
const SkScalar max = 100;
SkRandom rand;
for (size_t i = 0; i < SK_ARRAY_COUNT(fRects); ++i) {
SkScalar x = rand.nextRangeScalar(min, max);
SkScalar y = rand.nextRangeScalar(min, max);
SkScalar w = rand.nextRangeScalar(min, max);
SkScalar h = rand.nextRangeScalar(min, max);
fRects[i].setXYWH(x, y, w, h);
}
}
};
class GeoRectBench_intersect : public GeoRectBench {
public:
GeoRectBench_intersect() : GeoRectBench("rect_intersect") {}
protected:
void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
for (int outer = 0; outer < loops; ++outer) {
int count = 0;
for (size_t i = 0; i < SK_ARRAY_COUNT(fRects); ++i) {
SkRect r = fRects[0];
count += r.intersect(fRects[i]);
}
this->virtualCallToFoilOptimizers(count);
}
}
};
class GeoRectBench_intersect_rect : public GeoRectBench {
public:
GeoRectBench_intersect_rect() : GeoRectBench("rect_intersect_rect") {}
protected:
void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
for (int outer = 0; outer < loops; ++outer) {
int count = 0;
SkRect r;
for (size_t i = 0; i < SK_ARRAY_COUNT(fRects); ++i) {
count += r.intersect(fRects[0], fRects[i]);
}
this->virtualCallToFoilOptimizers(count);
}
}
};
class GeoRectBench_Intersects : public GeoRectBench {
public:
GeoRectBench_Intersects() : GeoRectBench("rect_Intersects") {}
protected:
void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
for (int outer = 0; outer < loops; ++outer) {
int count = 0;
for (size_t i = 0; i < SK_ARRAY_COUNT(fRects); ++i) {
count += SkRect::Intersects(fRects[0], fRects[i]);
}
this->virtualCallToFoilOptimizers(count);
}
}
};
class GeoRectBench_sort : public GeoRectBench {
public:
GeoRectBench_sort() : GeoRectBench("rect_sort") {}
protected:
void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
for (int outer = 0; outer < loops; ++outer) {
for (size_t i = 0; i < SK_ARRAY_COUNT(fRects); ++i) {
fRects[i].sort();
}
}
}
};
DEF_BENCH( return new GeoRectBench_intersect; )
DEF_BENCH( return new GeoRectBench_intersect_rect; )
DEF_BENCH( return new GeoRectBench_Intersects; )
DEF_BENCH( return new GeoRectBench_sort; )
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