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