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/resources/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 class BenchmarkRasterTask : public Task {
  28  public:
  29   BenchmarkRasterTask(RasterSource* raster_source,
  30                       const gfx::Rect& content_rect,
  31                       float contents_scale,
  32                       size_t repeat_count)
  33       : raster_source_(raster_source),
  34         content_rect_(content_rect),
  35         contents_scale_(contents_scale),
  36         repeat_count_(repeat_count),
  37         is_solid_color_(false),
  38         best_time_(base::TimeDelta::Max()) {}
  39
  40   // Overridden from Task:
  41   void RunOnWorkerThread() override {
  42     // Parameters for LapTimer.
  43     const int kTimeLimitMillis = 1;
  44     const int kWarmupRuns = 0;
  45     const int kTimeCheckInterval = 1;
  46
  47     for (size_t i = 0; i < repeat_count_; ++i) {
  48       // Run for a minimum amount of time to avoid problems with timer
  49       // quantization when the layer is very small.
  50       LapTimer timer(kWarmupRuns,
  51                      base::TimeDelta::FromMilliseconds(kTimeLimitMillis),
  52                      kTimeCheckInterval);
  53       do {
  54         SkBitmap bitmap;
  55         bitmap.allocPixels(SkImageInfo::MakeN32Premul(content_rect_.width(),
  56                                                       content_rect_.height()));
  57         SkCanvas canvas(bitmap);
  58         RasterSource::SolidColorAnalysis analysis;
  59
  60         raster_source_->PerformSolidColorAnalysis(content_rect_,
  61                                                   contents_scale_, &analysis);
  62         raster_source_->PlaybackToCanvas(&canvas, content_rect_,
  63                                          contents_scale_);
  64
  65         is_solid_color_ = analysis.is_solid_color;
  66
  67         timer.NextLap();
  68       } while (!timer.HasTimeLimitExpired());
  69       base::TimeDelta duration =
  70           base::TimeDelta::FromMillisecondsD(timer.MsPerLap());
  71       if (duration < best_time_)
  72         best_time_ = duration;
  73     }
  74   }
  75
  76   bool IsSolidColor() const { return is_solid_color_; }
  77   base::TimeDelta GetBestTime() const { return best_time_; }
  78
  79  private:
  80   ~BenchmarkRasterTask() override {}
  81
  82   RasterSource* raster_source_;
  83   gfx::Rect content_rect_;
  84   float contents_scale_;
  85   size_t repeat_count_;
  86   bool is_solid_color_;
  87   base::TimeDelta best_time_;
  88 };
  89
  90 class FixedInvalidationPictureLayerTilingClient
  91     : public PictureLayerTilingClient {
  92  public:
  93   FixedInvalidationPictureLayerTilingClient(
  94       PictureLayerTilingClient* base_client,
  95       const Region invalidation)
  96       : base_client_(base_client), invalidation_(invalidation) {}
  97
  98   scoped_refptr<Tile> CreateTile(float contents_scale,
  99                                  const gfx::Rect& content_rect) override {
 100     return base_client_->CreateTile(contents_scale, content_rect);
 101   }
 102
 103   gfx::Size CalculateTileSize(const gfx::Size& content_bounds) const override {
 104     return base_client_->CalculateTileSize(content_bounds);
 105   }
 106
 107   // This is the only function that returns something different from the base
 108   // client. Avoids sharing tiles in this area.
 109   const Region* GetPendingInvalidation() override { return &invalidation_; }
 110
 111   const PictureLayerTiling* GetPendingOrActiveTwinTiling(
 112       const PictureLayerTiling* tiling) const override {
 113     return base_client_->GetPendingOrActiveTwinTiling(tiling);
 114   }
 115
 116   PictureLayerTiling* GetRecycledTwinTiling(
 117       const PictureLayerTiling* tiling) override {
 118     return base_client_->GetRecycledTwinTiling(tiling);
 119   }
 120
 121   TilePriority::PriorityBin GetMaxTilePriorityBin() const override {
 122     return base_client_->GetMaxTilePriorityBin();
 123   }
 124
 125   WhichTree GetTree() const override { return base_client_->GetTree(); }
 126
 127   bool RequiresHighResToDraw() const override {
 128     return base_client_->RequiresHighResToDraw();
 129   }
 130
 131  private:
 132   PictureLayerTilingClient* base_client_;
 133   Region invalidation_;
 134 };
 135
 136 }  // namespace
 137
 138 RasterizeAndRecordBenchmarkImpl::RasterizeAndRecordBenchmarkImpl(
 139     scoped_refptr<base::MessageLoopProxy> origin_loop,
 140     base::Value* value,
 141     const MicroBenchmarkImpl::DoneCallback& callback)
 142     : MicroBenchmarkImpl(callback, origin_loop),
 143       rasterize_repeat_count_(kDefaultRasterizeRepeatCount) {
 144   base::DictionaryValue* settings = nullptr;
 145   value->GetAsDictionary(&settings);
 146   if (!settings)
 147     return;
 148
 149   if (settings->HasKey("rasterize_repeat_count"))
 150     settings->GetInteger("rasterize_repeat_count", &rasterize_repeat_count_);
 151 }
 152
 153 RasterizeAndRecordBenchmarkImpl::~RasterizeAndRecordBenchmarkImpl() {}
 154
 155 void RasterizeAndRecordBenchmarkImpl::DidCompleteCommit(
 156     LayerTreeHostImpl* host) {
 157   LayerTreeHostCommon::CallFunctionForSubtree(
 158       host->RootLayer(),
 159       base::Bind(&RasterizeAndRecordBenchmarkImpl::Run,
 160                  base::Unretained(this)));
 161
 162   scoped_ptr<base::DictionaryValue> result(new base::DictionaryValue());
 163   result->SetDouble("rasterize_time_ms",
 164                     rasterize_results_.total_best_time.InMillisecondsF());
 165   result->SetDouble("total_pictures_in_pile_size",
 166                     rasterize_results_.total_memory_usage);
 167   result->SetInteger("pixels_rasterized", rasterize_results_.pixels_rasterized);
 168   result->SetInteger("pixels_rasterized_with_non_solid_color",
 169                      rasterize_results_.pixels_rasterized_with_non_solid_color);
 170   result->SetInteger("pixels_rasterized_as_opaque",
 171                      rasterize_results_.pixels_rasterized_as_opaque);
 172   result->SetInteger("total_layers", rasterize_results_.total_layers);
 173   result->SetInteger("total_picture_layers",
 174                      rasterize_results_.total_picture_layers);
 175   result->SetInteger("total_picture_layers_with_no_content",
 176                      rasterize_results_.total_picture_layers_with_no_content);
 177   result->SetInteger("total_picture_layers_off_screen",
 178                      rasterize_results_.total_picture_layers_off_screen);
 179
 180   NotifyDone(result.Pass());
 181 }
 182
 183 void RasterizeAndRecordBenchmarkImpl::Run(LayerImpl* layer) {
 184   rasterize_results_.total_layers++;
 185   layer->RunMicroBenchmark(this);
 186 }
 187
 188 void RasterizeAndRecordBenchmarkImpl::RunOnLayer(PictureLayerImpl* layer) {
 189   rasterize_results_.total_picture_layers++;
 190   if (!layer->CanHaveTilings()) {
 191     rasterize_results_.total_picture_layers_with_no_content++;
 192     return;
 193   }
 194   if (layer->visible_content_rect().IsEmpty()) {
 195     rasterize_results_.total_picture_layers_off_screen++;
 196     return;
 197   }
 198
 199   TaskGraphRunner* task_graph_runner = TileTaskWorkerPool::GetTaskGraphRunner();
 200   DCHECK(task_graph_runner);
 201
 202   if (!task_namespace_.IsValid())
 203     task_namespace_ = task_graph_runner->GetNamespaceToken();
 204
 205   FixedInvalidationPictureLayerTilingClient client(
 206       layer, gfx::Rect(layer->content_bounds()));
 207
 208   // In this benchmark, we will create a local tiling set and measure how long
 209   // it takes to rasterize content. As such, the actual settings used here don't
 210   // really matter.
 211   const LayerTreeSettings& settings = layer->layer_tree_impl()->settings();
 212   scoped_ptr<PictureLayerTilingSet> tiling_set = PictureLayerTilingSet::Create(
 213       &client, settings.max_tiles_for_interest_area,
 214       settings.skewport_target_time_in_seconds,
 215       settings.skewport_extrapolation_limit_in_content_pixels);
 216
 217   PictureLayerTiling* tiling = tiling_set->AddTiling(layer->contents_scale_x(),
 218                                                      layer->GetRasterSource());
 219   tiling->CreateAllTilesForTesting();
 220   for (PictureLayerTiling::CoverageIterator it(
 221            tiling, layer->contents_scale_x(), layer->visible_content_rect());
 222        it;
 223        ++it) {
 224     DCHECK(*it);
 225
 226     RasterSource* raster_source = (*it)->raster_source();
 227     gfx::Rect content_rect = (*it)->content_rect();
 228     float contents_scale = (*it)->contents_scale();
 229
 230     scoped_refptr<BenchmarkRasterTask> benchmark_raster_task(
 231         new BenchmarkRasterTask(raster_source,
 232                                 content_rect,
 233                                 contents_scale,
 234                                 rasterize_repeat_count_));
 235
 236     TaskGraph graph;
 237
 238     graph.nodes.push_back(
 239         TaskGraph::Node(benchmark_raster_task.get(),
 240                         TileTaskWorkerPool::kBenchmarkTaskPriority, 0u));
 241
 242     task_graph_runner->ScheduleTasks(task_namespace_, &graph);
 243     task_graph_runner->WaitForTasksToFinishRunning(task_namespace_);
 244
 245     Task::Vector completed_tasks;
 246     task_graph_runner->CollectCompletedTasks(task_namespace_, &completed_tasks);
 247     DCHECK_EQ(1u, completed_tasks.size());
 248     DCHECK_EQ(completed_tasks[0], benchmark_raster_task);
 249
 250     int tile_size = content_rect.width() * content_rect.height();
 251     base::TimeDelta min_time = benchmark_raster_task->GetBestTime();
 252     bool is_solid_color = benchmark_raster_task->IsSolidColor();
 253
 254     if (layer->contents_opaque())
 255       rasterize_results_.pixels_rasterized_as_opaque += tile_size;
 256
 257     if (!is_solid_color) {
 258       rasterize_results_.pixels_rasterized_with_non_solid_color += tile_size;
 259     }
 260
 261     rasterize_results_.pixels_rasterized += tile_size;
 262     rasterize_results_.total_best_time += min_time;
 263   }
 264
 265   const RasterSource* layer_raster_source = layer->GetRasterSource();
 266   rasterize_results_.total_memory_usage +=
 267       layer_raster_source->GetPictureMemoryUsage();
 268 }
 269
 270 RasterizeAndRecordBenchmarkImpl::RasterizeResults::RasterizeResults()
 271     : pixels_rasterized(0),
 272       pixels_rasterized_with_non_solid_color(0),
 273       pixels_rasterized_as_opaque(0),
 274       total_memory_usage(0),
 275       total_layers(0),
 276       total_picture_layers(0),
 277       total_picture_layers_with_no_content(0),
 278       total_picture_layers_off_screen(0) {
 279 }
 280
 281 RasterizeAndRecordBenchmarkImpl::RasterizeResults::~RasterizeResults() {}
 282
 283 }  // namespace cc