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      1 /*
      2  * Copyright 2014 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #include "SkCommandLineFlags.h"
      9 #include "SkForceLinking.h"
     10 #include "SkGraphics.h"
     11 #include "SkOSFile.h"
     12 #include "SkPicture.h"
     13 #include "SkPictureRecorder.h"
     14 #include "SkStream.h"
     15 #include "SkString.h"
     16 
     17 #include "../include/record/SkRecording.h"
     18 
     19 #include "BenchTimer.h"
     20 #include "Stats.h"
     21 
     22 typedef WallTimer Timer;
     23 
     24 __SK_FORCE_IMAGE_DECODER_LINKING;
     25 
     26 DEFINE_string2(skps, r, "skps", "Directory containing SKPs to playback.");
     27 DEFINE_int32(samples, 10, "Gather this many samples of each picture playback.");
     28 DEFINE_bool(skr, false, "Play via SkRecord instead of SkPicture.");
     29 DEFINE_int32(tile, 1000000000, "Simulated tile size.");
     30 DEFINE_string(match, "", "The usual filters on file names of SKPs to bench.");
     31 DEFINE_string(timescale, "ms", "Print times in ms, us, or ns");
     32 DEFINE_int32(verbose, 0, "0: print min sample; "
     33                          "1: print min, mean, max and noise indication "
     34                          "2: print all samples");
     35 
     36 static double timescale() {
     37     if (FLAGS_timescale.contains("us")) return 1000;
     38     if (FLAGS_timescale.contains("ns")) return 1000000;
     39     return 1;
     40 }
     41 
     42 static SkPicture* rerecord_with_tilegrid(SkPicture& src) {
     43     SkTileGridFactory::TileGridInfo info;
     44     info.fTileInterval.set(FLAGS_tile, FLAGS_tile);
     45     info.fMargin.setEmpty();
     46     info.fOffset.setZero();
     47     SkTileGridFactory factory(info);
     48 
     49     SkPictureRecorder recorder;
     50     src.draw(recorder.beginRecording(src.width(), src.height(), &factory));
     51     return recorder.endRecording();
     52 }
     53 
     54 static EXPERIMENTAL::SkPlayback* rerecord_with_skr(SkPicture& src) {
     55     EXPERIMENTAL::SkRecording recording(src.width(), src.height());
     56     src.draw(recording.canvas());
     57     return recording.releasePlayback();
     58 }
     59 
     60 static void draw(const EXPERIMENTAL::SkPlayback& skr, const SkPicture& skp, SkCanvas* canvas) {
     61     if (FLAGS_skr) {
     62         skr.draw(canvas);
     63     } else {
     64         skp.draw(canvas);
     65     }
     66 }
     67 
     68 static void bench(SkPMColor* scratch, SkPicture& src, const char* name) {
     69     SkAutoTUnref<SkPicture> picture(rerecord_with_tilegrid(src));
     70     SkAutoTDelete<EXPERIMENTAL::SkPlayback> record(rerecord_with_skr(src));
     71 
     72     SkAutoTDelete<SkCanvas> canvas(SkCanvas::NewRasterDirectN32(src.width(),
     73                                                                 src.height(),
     74                                                                 scratch,
     75                                                                 src.width() * sizeof(SkPMColor)));
     76     canvas->clipRect(SkRect::MakeWH(SkIntToScalar(FLAGS_tile), SkIntToScalar(FLAGS_tile)));
     77 
     78     // Draw once to warm any caches.  The first sample otherwise can be very noisy.
     79     draw(*record, *picture, canvas.get());
     80 
     81     Timer timer;
     82     SkAutoTMalloc<double> samples(FLAGS_samples);
     83     for (int i = 0; i < FLAGS_samples; i++) {
     84         // We assume timer overhead (typically, ~30ns) is insignificant
     85         // compared to draw runtime (at least ~100us, usually several ms).
     86         timer.start(timescale());
     87         draw(*record, *picture, canvas.get());
     88         timer.end();
     89         samples[i] = timer.fWall;
     90     }
     91 
     92     Stats stats(samples.get(), FLAGS_samples);
     93     if (FLAGS_verbose == 0) {
     94         printf("%g\t%s\n", stats.min, name);
     95     } else if (FLAGS_verbose == 1) {
     96         // Get a rough idea of how noisy the measurements were.
     97         const double noisePercent = 100 * sqrt(stats.var) / stats.mean;
     98         printf("%g\t%g\t%g\t%.0f%%\t%s\n", stats.min, stats.mean, stats.max, noisePercent, name);
     99     } else if (FLAGS_verbose == 2) {
    100         printf("%s", name);
    101         for (int i = 0; i < FLAGS_samples; i++) {
    102             printf("\t%g", samples[i]);
    103         }
    104         printf("\n");
    105     }
    106 }
    107 
    108 int tool_main(int argc, char** argv);
    109 int tool_main(int argc, char** argv) {
    110     SkCommandLineFlags::Parse(argc, argv);
    111     SkAutoGraphics autoGraphics;
    112 
    113     // We share a single scratch bitmap among benches to reduce the profile noise from allocation.
    114     static const int kMaxArea = 209825221;  // tabl_mozilla is this big.
    115     SkAutoTMalloc<SkPMColor> scratch(kMaxArea);
    116 
    117     SkOSFile::Iter it(FLAGS_skps[0], ".skp");
    118     SkString filename;
    119     bool failed = false;
    120     while (it.next(&filename)) {
    121         if (SkCommandLineFlags::ShouldSkip(FLAGS_match, filename.c_str())) {
    122             continue;
    123         }
    124 
    125         const SkString path = SkOSPath::SkPathJoin(FLAGS_skps[0], filename.c_str());
    126 
    127         SkAutoTUnref<SkStream> stream(SkStream::NewFromFile(path.c_str()));
    128         if (!stream) {
    129             SkDebugf("Could not read %s.\n", path.c_str());
    130             failed = true;
    131             continue;
    132         }
    133         SkAutoTUnref<SkPicture> src(SkPicture::CreateFromStream(stream));
    134         if (!src) {
    135             SkDebugf("Could not read %s as an SkPicture.\n", path.c_str());
    136             failed = true;
    137             continue;
    138         }
    139 
    140         if (src->width() * src->height() > kMaxArea) {
    141             SkDebugf("%s (%dx%d) is larger than hardcoded scratch bitmap (%dpx).\n",
    142                      path.c_str(), src->width(), src->height(), kMaxArea);
    143             failed = true;
    144             continue;
    145         }
    146 
    147         bench(scratch.get(), *src, filename.c_str());
    148     }
    149     return failed ? 1 : 0;
    150 }
    151 
    152 #if !defined SK_BUILD_FOR_IOS
    153 int main(int argc, char * const argv[]) {
    154     return tool_main(argc, (char**) argv);
    155 }
    156 #endif
    157