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