cc/debug/rasterize_and_record_benchmark_impl.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/debug/rasterize_and_record_benchmark_impl.h"
   6
   7 #include <algorithm>
   8 #include <limits>
   9
  10 #include "base/basictypes.h"
  11 #include "base/values.h"
  12 #include "cc/debug/lap_timer.h"
  13 #include "cc/layers/layer_impl.h"
  14 #include "cc/layers/picture_layer_impl.h"
  15 #include "cc/raster/tile_task_worker_pool.h"
  16 #include "cc/trees/layer_tree_host_common.h"
  17 #include "cc/trees/layer_tree_host_impl.h"
  18 #include "cc/trees/layer_tree_impl.h"
  19 #include "ui/gfx/geometry/rect.h"
  20
  21 namespace cc {
  22
  23 namespace {
  24
  25 const int kDefaultRasterizeRepeatCount = 100;
  26
  27 void RunBenchmark(RasterSource* raster_source,
  28                   const gfx::Rect& content_rect,
  29                   float contents_scale,
  30                   size_t repeat_count,
  31                   base::TimeDelta* min_time,
  32                   bool* is_solid_color) {
  33   // Parameters for LapTimer.
  34   const int kTimeLimitMillis = 1;
  35   const int kWarmupRuns = 0;
  36   const int kTimeCheckInterval = 1;
  37
  38   *min_time = base::TimeDelta::Max();
  39   for (size_t i = 0; i < repeat_count; ++i) {
  40     // Run for a minimum amount of time to avoid problems with timer
  41     // quantization when the layer is very small.
  42     LapTimer timer(kWarmupRuns,
  43                    base::TimeDelta::FromMilliseconds(kTimeLimitMillis),
  44                    kTimeCheckInterval);
  45     do {
  46       SkBitmap bitmap;
  47       bitmap.allocPixels(SkImageInfo::MakeN32Premul(content_rect.width(),
  48                                                     content_rect.height()));
  49       SkCanvas canvas(bitmap);
  50       RasterSource::SolidColorAnalysis analysis;
  51
  52       raster_source->PerformSolidColorAnalysis(content_rect, contents_scale,
  53                                                &analysis);
  54       raster_source->PlaybackToCanvas(&canvas, content_rect, content_rect,
  55                                       contents_scale);
  56
  57       *is_solid_color = analysis.is_solid_color;
  58
  59       timer.NextLap();
  60     } while (!timer.HasTimeLimitExpired());
  61     base::TimeDelta duration =
  62         base::TimeDelta::FromMillisecondsD(timer.MsPerLap());
  63     if (duration < *min_time)
  64       *min_time = duration;
  65   }
  66 }
  67
  68 class FixedInvalidationPictureLayerTilingClient
  69     : public PictureLayerTilingClient {
  70  public:
  71   FixedInvalidationPictureLayerTilingClient(
  72       PictureLayerTilingClient* base_client,
  73       const Region invalidation)
  74       : base_client_(base_client), invalidation_(invalidation) {}
  75
  76   ScopedTilePtr CreateTile(float contents_scale,
  77                            const gfx::Rect& content_rect) override {
  78     return base_client_->CreateTile(contents_scale, content_rect);
  79   }
  80
  81   gfx::Size CalculateTileSize(const gfx::Size& content_bounds) const override {
  82     return base_client_->CalculateTileSize(content_bounds);
  83   }
  84
  85   // This is the only function that returns something different from the base
  86   // client. Avoids sharing tiles in this area.
  87   const Region* GetPendingInvalidation() override { return &invalidation_; }
  88
  89   const PictureLayerTiling* GetPendingOrActiveTwinTiling(
  90       const PictureLayerTiling* tiling) const override {
  91     return base_client_->GetPendingOrActiveTwinTiling(tiling);
  92   }
  93
  94   bool HasValidTilePriorities() const override {
  95     return base_client_->HasValidTilePriorities();
  96   }
  97
  98   bool RequiresHighResToDraw() const override {
  99     return base_client_->RequiresHighResToDraw();
 100   }
 101
 102  private:
 103   PictureLayerTilingClient* base_client_;
 104   Region invalidation_;
 105 };
 106
 107 }  // namespace
 108
 109 RasterizeAndRecordBenchmarkImpl::RasterizeAndRecordBenchmarkImpl(
 110     scoped_refptr<base::SingleThreadTaskRunner> origin_task_runner,
 111     base::Value* value,
 112     const MicroBenchmarkImpl::DoneCallback& callback)
 113     : MicroBenchmarkImpl(callback, origin_task_runner),
 114       rasterize_repeat_count_(kDefaultRasterizeRepeatCount) {
 115   base::DictionaryValue* settings = nullptr;
 116   value->GetAsDictionary(&settings);
 117   if (!settings)
 118     return;
 119
 120   if (settings->HasKey("rasterize_repeat_count"))
 121     settings->GetInteger("rasterize_repeat_count", &rasterize_repeat_count_);
 122 }
 123
 124 RasterizeAndRecordBenchmarkImpl::~RasterizeAndRecordBenchmarkImpl() {}
 125
 126 void RasterizeAndRecordBenchmarkImpl::DidCompleteCommit(
 127     LayerTreeHostImpl* host) {
 128   LayerTreeHostCommon::CallFunctionForSubtree(
 129       host->RootLayer(), [this](LayerImpl* layer) {
 130         rasterize_results_.total_layers++;
 131         layer->RunMicroBenchmark(this);
 132       });
 133
 134   scoped_ptr<base::DictionaryValue> result(new base::DictionaryValue());
 135   result->SetDouble("rasterize_time_ms",
 136                     rasterize_results_.total_best_time.InMillisecondsF());
 137   result->SetDouble("total_pictures_in_pile_size",
 138                     static_cast<int>(rasterize_results_.total_memory_usage));
 139   result->SetInteger("pixels_rasterized", rasterize_results_.pixels_rasterized);
 140   result->SetInteger("pixels_rasterized_with_non_solid_color",
 141                      rasterize_results_.pixels_rasterized_with_non_solid_color);
 142   result->SetInteger("pixels_rasterized_as_opaque",
 143                      rasterize_results_.pixels_rasterized_as_opaque);
 144   result->SetInteger("total_layers", rasterize_results_.total_layers);
 145   result->SetInteger("total_picture_layers",
 146                      rasterize_results_.total_picture_layers);
 147   result->SetInteger("total_picture_layers_with_no_content",
 148                      rasterize_results_.total_picture_layers_with_no_content);
 149   result->SetInteger("total_picture_layers_off_screen",
 150                      rasterize_results_.total_picture_layers_off_screen);
 151
 152   NotifyDone(result.Pass());
 153 }
 154
 155 void RasterizeAndRecordBenchmarkImpl::RunOnLayer(PictureLayerImpl* layer) {
 156   rasterize_results_.total_picture_layers++;
 157   if (!layer->CanHaveTilings()) {
 158     rasterize_results_.total_picture_layers_with_no_content++;
 159     return;
 160   }
 161   if (layer->visible_layer_rect().IsEmpty()) {
 162     rasterize_results_.total_picture_layers_off_screen++;
 163     return;
 164   }
 165
 166   FixedInvalidationPictureLayerTilingClient client(layer,
 167                                                    gfx::Rect(layer->bounds()));
 168
 169   // In this benchmark, we will create a local tiling set and measure how long
 170   // it takes to rasterize content. As such, the actual settings used here don't
 171   // really matter.
 172   const LayerTreeSettings& settings = layer->layer_tree_impl()->settings();
 173   scoped_ptr<PictureLayerTilingSet> tiling_set = PictureLayerTilingSet::Create(
 174       layer->GetTree(), &client, settings.max_tiles_for_interest_area,
 175       settings.skewport_target_time_in_seconds,
 176       settings.skewport_extrapolation_limit_in_content_pixels);
 177
 178   PictureLayerTiling* tiling =
 179       tiling_set->AddTiling(1.f, layer->GetRasterSource());
 180   tiling->CreateAllTilesForTesting();
 181   RasterSource* raster_source = tiling->raster_source();
 182   for (PictureLayerTiling::CoverageIterator it(tiling, 1.f,
 183                                                layer->visible_layer_rect());
 184        it; ++it) {
 185     DCHECK(*it);
 186
 187     gfx::Rect content_rect = (*it)->content_rect();
 188     float contents_scale = (*it)->contents_scale();
 189
 190     base::TimeDelta min_time;
 191     bool is_solid_color = false;
 192     RunBenchmark(raster_source, content_rect, contents_scale,
 193                  rasterize_repeat_count_, &min_time, &is_solid_color);
 194
 195     int tile_size = content_rect.width() * content_rect.height();
 196     if (layer->contents_opaque())
 197       rasterize_results_.pixels_rasterized_as_opaque += tile_size;
 198
 199     if (!is_solid_color)
 200       rasterize_results_.pixels_rasterized_with_non_solid_color += tile_size;
 201
 202     rasterize_results_.pixels_rasterized += tile_size;
 203     rasterize_results_.total_best_time += min_time;
 204   }
 205
 206   const RasterSource* layer_raster_source = layer->GetRasterSource();
 207   rasterize_results_.total_memory_usage +=
 208       layer_raster_source->GetPictureMemoryUsage();
 209 }
 210
 211 RasterizeAndRecordBenchmarkImpl::RasterizeResults::RasterizeResults()
 212     : pixels_rasterized(0),
 213       pixels_rasterized_with_non_solid_color(0),
 214       pixels_rasterized_as_opaque(0),
 215       total_memory_usage(0),
 216       total_layers(0),
 217       total_picture_layers(0),
 218       total_picture_layers_with_no_content(0),
 219       total_picture_layers_off_screen(0) {
 220 }
 221
 222 RasterizeAndRecordBenchmarkImpl::RasterizeResults::~RasterizeResults() {}
 223
 224 }  // namespace cc