blob: a4f3a6a39427e813c6e3a34334040a88a2401683 [file] [log] [blame]
* 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 "SkCanvas.h"
#include "SkCommandLineFlags.h"
#include "SkForceLinking.h"
#include "SkGraphics.h"
#include "SkOSFile.h"
#include "SkPicture.h"
#include "SkPictureRecorder.h"
#include "SkStream.h"
#include "SkString.h"
#include "Stats.h"
#include "Timer.h"
DEFINE_string2(skps, r, "skps", "Directory containing SKPs to playback.");
DEFINE_int32(samples, 10, "Gather this many samples of each picture playback.");
DEFINE_bool(skr, false, "Play via SkRecord instead of SkPicture.");
DEFINE_int32(tile, 1000000000, "Simulated tile size.");
DEFINE_string(match, "", "The usual filters on file names of SKPs to bench.");
DEFINE_string(timescale, "ms", "Print times in ms, us, or ns");
DEFINE_int32(verbose, 0, "0: print min sample; "
"1: print min, mean, max and noise indication "
"2: print all samples");
static double timescale() {
if (FLAGS_timescale.contains("us")) return 1000;
if (FLAGS_timescale.contains("ns")) return 1000000;
return 1;
static SkPicture* rerecord(const SkPicture& src, bool skr) {
SkTileGridFactory::TileGridInfo info;
info.fTileInterval.set(FLAGS_tile, FLAGS_tile);
SkTileGridFactory factory(info);
SkPictureRecorder recorder;
src.draw(skr ? recorder.EXPERIMENTAL_beginRecording(src.width(), src.height(), &factory)
: recorder. beginRecording(src.width(), src.height(), &factory));
return recorder.endRecording();
static void bench(SkPMColor* scratch, const SkPicture& src, const char* name) {
SkAutoTUnref<const SkPicture> picture(rerecord(src, FLAGS_skr));
SkAutoTDelete<SkCanvas> canvas(SkCanvas::NewRasterDirectN32(src.width(),
src.width() * sizeof(SkPMColor)));
canvas->clipRect(SkRect::MakeWH(SkIntToScalar(FLAGS_tile), SkIntToScalar(FLAGS_tile)));
// Draw once to warm any caches. The first sample otherwise can be very noisy.
WallTimer timer;
const double scale = timescale();
SkAutoTMalloc<double> samples(FLAGS_samples);
for (int i = 0; i < FLAGS_samples; i++) {
// We assume timer overhead (typically, ~30ns) is insignificant
// compared to draw runtime (at least ~100us, usually several ms).
samples[i] = timer.fWall * scale;
Stats stats(samples.get(), FLAGS_samples);
if (FLAGS_verbose == 0) {
printf("%g\t%s\n", stats.min, name);
} else if (FLAGS_verbose == 1) {
// Get a rough idea of how noisy the measurements were.
const double noisePercent = 100 * sqrt(stats.var) / stats.mean;
printf("%g\t%g\t%g\t±%.0f%%\t%s\n", stats.min, stats.mean, stats.max, noisePercent, name);
} else if (FLAGS_verbose == 2) {
printf("%s", name);
for (int i = 0; i < FLAGS_samples; i++) {
printf("\t%g", samples[i]);
int tool_main(int argc, char** argv);
int tool_main(int argc, char** argv) {
SkCommandLineFlags::Parse(argc, argv);
SkAutoGraphics autoGraphics;
// We share a single scratch bitmap among benches to reduce the profile noise from allocation.
static const int kMaxArea = 209825221; // tabl_mozilla is this big.
SkAutoTMalloc<SkPMColor> scratch(kMaxArea);
SkOSFile::Iter it(FLAGS_skps[0], ".skp");
SkString filename;
bool failed = false;
while ( {
if (SkCommandLineFlags::ShouldSkip(FLAGS_match, filename.c_str())) {
const SkString path = SkOSPath::Join(FLAGS_skps[0], filename.c_str());
SkAutoTUnref<SkStream> stream(SkStream::NewFromFile(path.c_str()));
if (!stream) {
SkDebugf("Could not read %s.\n", path.c_str());
failed = true;
SkAutoTUnref<const SkPicture> src(SkPicture::CreateFromStream(stream));
if (!src) {
SkDebugf("Could not read %s as an SkPicture.\n", path.c_str());
failed = true;
if (src->width() * src->height() > kMaxArea) {
SkDebugf("%s (%dx%d) is larger than hardcoded scratch bitmap (%dpx).\n",
path.c_str(), src->width(), src->height(), kMaxArea);
failed = true;
bench(scratch.get(), *src, filename.c_str());
return failed ? 1 : 0;
#if !defined SK_BUILD_FOR_IOS
int main(int argc, char * const argv[]) {
return tool_main(argc, (char**) argv);