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98 lines
3.6 KiB
98 lines
3.6 KiB
/*
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* Copyright 2011 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 "SkColor.h"
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#include "SkPaint.h"
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#include "SkPicture.h"
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#include "SkPictureRecorder.h"
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#include "SkPoint.h"
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#include "SkRandom.h"
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#include "SkRect.h"
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#include "SkString.h"
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// This is designed to emulate about 4 screens of textual content
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///////////////////////////////////////////////////////////////////////////////
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// Chrome draws into small tiles with impl-side painting.
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// This benchmark measures the relative performance of our bounding-box hierarchies,
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// both when querying tiles perfectly and when not.
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enum BBH { kNone, kRTree };
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enum Mode { kTiled, kRandom };
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class TiledPlaybackBench : public Benchmark {
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public:
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TiledPlaybackBench(BBH bbh, Mode mode) : fBBH(bbh), fMode(mode), fName("tiled_playback") {
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switch (fBBH) {
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case kNone: fName.append("_none" ); break;
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case kRTree: fName.append("_rtree" ); break;
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}
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switch (fMode) {
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case kTiled: fName.append("_tiled" ); break;
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case kRandom: fName.append("_random"); break;
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}
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}
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const char* onGetName() override { return fName.c_str(); }
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SkIPoint onGetSize() override { return SkIPoint::Make(1024,1024); }
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void onDelayedSetup() override {
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std::unique_ptr<SkBBHFactory> factory;
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switch (fBBH) {
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case kNone: break;
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case kRTree: factory.reset(new SkRTreeFactory); break;
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}
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SkPictureRecorder recorder;
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SkCanvas* canvas = recorder.beginRecording(1024, 1024, factory.get());
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SkRandom rand;
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for (int i = 0; i < 10000; i++) {
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SkScalar x = rand.nextRangeScalar(0, 1024),
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y = rand.nextRangeScalar(0, 1024),
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w = rand.nextRangeScalar(0, 128),
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h = rand.nextRangeScalar(0, 128);
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SkPaint paint;
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paint.setColor(rand.nextU());
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paint.setAlpha(0xFF);
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canvas->drawRect(SkRect::MakeXYWH(x,y,w,h), paint);
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}
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fPic = recorder.finishRecordingAsPicture();
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}
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void onDraw(int loops, SkCanvas* canvas) override {
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for (int i = 0; i < loops; i++) {
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// This inner loop guarantees we make the same choices for all bench variants.
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SkRandom rand;
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for (int j = 0; j < 10; j++) {
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SkScalar x = 0, y = 0;
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switch (fMode) {
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case kTiled: x = SkScalar(256 * rand.nextULessThan(4));
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y = SkScalar(256 * rand.nextULessThan(4));
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break;
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case kRandom: x = rand.nextRangeScalar(0, 768);
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y = rand.nextRangeScalar(0, 768);
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break;
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}
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SkAutoCanvasRestore ar(canvas, true/*save now*/);
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canvas->clipRect(SkRect::MakeXYWH(x,y,256,256));
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fPic->playback(canvas);
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}
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}
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}
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private:
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BBH fBBH;
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Mode fMode;
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SkString fName;
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sk_sp<SkPicture> fPic;
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};
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DEF_BENCH( return new TiledPlaybackBench(kNone, kRandom); )
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DEF_BENCH( return new TiledPlaybackBench(kNone, kTiled ); )
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DEF_BENCH( return new TiledPlaybackBench(kRTree, kRandom); )
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DEF_BENCH( return new TiledPlaybackBench(kRTree, kTiled ); )
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