AuroraMiddleware/skia2
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Add benchmark to compare different BBH query patterns.

Browse Source 
On my laptop:
maxrss	loops	min	median	mean	max	stddev	samples   	config	bench
  37M	1	14ms	14.2ms	14.6ms	18.2ms	9%	▁█▁▁▁▁▂▂▂▁	gpu	tiled_playback_tilegrid_tiled
  40M	1	17ms	17.2ms	17.2ms	17.6ms	1%	▆▃▁█▄▇▂▁▁▁	gpu	tiled_playback_tilegrid_random
  40M	1	14.6ms	14.9ms	15.8ms	19.1ms	11%	▂▁▁▁▁▁▁█▅█	gpu	tiled_playback_rtree_tiled
  43M	1	16.5ms	16.7ms	16.8ms	17.4ms	1%	▂▃▅█▃▂▁▃▃▂	gpu	tiled_playback_rtree_random
  43M	1	15.9ms	16.1ms	16.5ms	18.7ms	6%	▁▁█▇▁▁▁▂▁▁	gpu	tiled_playback_none_tiled
  44M	1	17.9ms	17.9ms	18ms	18.1ms	1%	▂▁▅▁▇▃▁▂█▇	gpu	tiled_playback_none_random

TileGrid and RTree perform pretty much the same, both beating no BBH.

BUG=skia:3085

Review URL: https://codereview.chromium.org/699313006
This commit is contained in:
mtklein 2014-11-11 10:39:27 -08:00 committed by Commit bot
parent 909b04b630
commit bf5dd4170f
1 changed files with 83 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

83
bench/PicturePlaybackBench.cpp
View File

@ -11,6 +11,7 @@
#include "SkPicture.h"
#include "SkPictureRecorder.h"
#include "SkPoint.h"
#include "SkRandom.h"
#include "SkRect.h"
#include "SkString.h"
@ -139,3 +140,85 @@ private:
DEF_BENCH( return new TextPlaybackBench(); )
DEF_BENCH( return new PosTextPlaybackBench(true); )
DEF_BENCH( return new PosTextPlaybackBench(false); )
// Chrome draws into small tiles with impl-side painting.
// This benchmark measures the relative performance of our bounding-box hierarchies,
// both when querying tiles perfectly and when not.
enum BBH { kNone, kRTree, kTileGrid };
enum Mode { kTiled, kRandom };
class TiledPlaybackBench : public Benchmark {
public:
TiledPlaybackBench(BBH bbh, Mode mode) : fBBH(bbh), fMode(mode), fName("tiled_playback") {
switch (fBBH) {
case kNone: fName.append("_none" ); break;
case kRTree: fName.append("_rtree" ); break;
case kTileGrid: fName.append("_tilegrid"); break;
}
switch (fMode) {
case kTiled: fName.append("_tiled" ); break;
case kRandom: fName.append("_random"); break;
}
}
virtual const char* onGetName() SK_OVERRIDE { return fName.c_str(); }
virtual SkIPoint onGetSize() SK_OVERRIDE { return SkIPoint::Make(1024,1024); }
virtual void onPreDraw() SK_OVERRIDE {
SkTileGridFactory::TileGridInfo info = { { 256, 256 }, {0,0}, {0,0} };
SkAutoTDelete<SkBBHFactory> factory;
switch (fBBH) {
case kNone: break;
case kRTree: factory.reset(new SkRTreeFactory); break;
case kTileGrid: factory.reset(new SkTileGridFactory(info)); break;
}
SkPictureRecorder recorder;
SkCanvas* canvas = recorder.beginRecording(1024, 1024, factory);
SkRandom rand;
for (int i = 0; i < 10000; i++) {
SkScalar x = rand.nextRangeScalar(0, 1024),
y = rand.nextRangeScalar(0, 1024),
w = rand.nextRangeScalar(0, 128),
h = rand.nextRangeScalar(0, 128);
SkPaint paint;
paint.setColor(rand.nextU());
paint.setAlpha(0xFF);
canvas->drawRect(SkRect::MakeXYWH(x,y,w,h), paint);
}
fPic.reset(recorder.endRecording());
}
virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
for (int i = 0; i < loops; i++) {
// This inner loop guarantees we make the same choices for all bench variants.
SkRandom rand;
for (int j = 0; j < 10; j++) {
SkScalar x = 0, y = 0;
switch (fMode) {
case kTiled: x = SkScalar(256 * rand.nextULessThan(4));
y = SkScalar(256 * rand.nextULessThan(4));
break;
case kRandom: x = rand.nextRangeScalar(0, 768);
y = rand.nextRangeScalar(0, 768);
break;
}
SkAutoCanvasRestore ar(canvas, true/*save now*/);
canvas->clipRect(SkRect::MakeXYWH(x,y,256,256));
fPic->playback(canvas);
}
}
}
private:
BBH fBBH;
Mode fMode;
SkString fName;
SkAutoTDelete<SkPicture> fPic;
};
DEF_BENCH( return new TiledPlaybackBench(kNone, kRandom); )
DEF_BENCH( return new TiledPlaybackBench(kNone, kTiled ); )
DEF_BENCH( return new TiledPlaybackBench(kRTree, kRandom); )
DEF_BENCH( return new TiledPlaybackBench(kRTree, kTiled ); )
DEF_BENCH( return new TiledPlaybackBench(kTileGrid, kRandom); )
DEF_BENCH( return new TiledPlaybackBench(kTileGrid, kTiled ); )