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
timescale()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
rerecord_with_tilegrid(SkPicture & src)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
rerecord_with_skr(SkPicture & src)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
draw(const EXPERIMENTAL::SkPlayback & skr,const SkPicture & skp,SkCanvas * canvas)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
bench(SkPMColor * scratch,SkPicture & src,const char * name)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);
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
main(int argc,char * const argv[])152 int main(int argc, char * const argv[]) {
153 return tool_main(argc, (char**) argv);
154 }
155 #endif
156