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/raster_worker_pool.h"
  16 #include "cc/trees/layer_tree_host_common.h"
  17 #include "cc/trees/layer_tree_host_impl.h"
  18 #include "ui/gfx/rect.h"
  19
  20 namespace cc {
  21
  22 namespace {
  23
  24 const int kDefaultRasterizeRepeatCount = 100;
  25
  26 class BenchmarkRasterTask : public Task {
  27  public:
  28   BenchmarkRasterTask(PicturePileImpl* picture_pile,
  29                       const gfx::Rect& content_rect,
  30                       float contents_scale,
  31                       size_t repeat_count)
  32       : picture_pile_(picture_pile),
  33         content_rect_(content_rect),
  34         contents_scale_(contents_scale),
  35         repeat_count_(repeat_count),
  36         is_solid_color_(false),
  37         best_time_(base::TimeDelta::Max()) {}
  38
  39   // Overridden from Task:
  40   virtual void RunOnWorkerThread() OVERRIDE {
  41     // Parameters for LapTimer.
  42     const int kTimeLimitMillis = 1;
  43     const int kWarmupRuns = 0;
  44     const int kTimeCheckInterval = 1;
  45
  46     for (size_t i = 0; i < repeat_count_; ++i) {
  47       // Run for a minimum amount of time to avoid problems with timer
  48       // quantization when the layer is very small.
  49       LapTimer timer(kWarmupRuns,
  50                      base::TimeDelta::FromMilliseconds(kTimeLimitMillis),
  51                      kTimeCheckInterval);
  52       do {
  53         SkBitmap bitmap;
  54         bitmap.allocPixels(SkImageInfo::MakeN32Premul(content_rect_.width(),
  55                                                       content_rect_.height()));
  56         SkCanvas canvas(bitmap);
  57         PicturePileImpl::Analysis analysis;
  58
  59         picture_pile_->AnalyzeInRect(
  60             content_rect_, contents_scale_, &analysis, NULL);
  61         picture_pile_->RasterToBitmap(
  62             &canvas, content_rect_, contents_scale_, NULL);
  63
  64         is_solid_color_ = analysis.is_solid_color;
  65
  66         timer.NextLap();
  67       } while (!timer.HasTimeLimitExpired());
  68       base::TimeDelta duration =
  69           base::TimeDelta::FromMillisecondsD(timer.MsPerLap());
  70       if (duration < best_time_)
  71         best_time_ = duration;
  72     }
  73   }
  74
  75   bool IsSolidColor() const { return is_solid_color_; }
  76   base::TimeDelta GetBestTime() const { return best_time_; }
  77
  78  private:
  79   virtual ~BenchmarkRasterTask() {}
  80
  81   PicturePileImpl* picture_pile_;
  82   gfx::Rect content_rect_;
  83   float contents_scale_;
  84   size_t repeat_count_;
  85   bool is_solid_color_;
  86   base::TimeDelta best_time_;
  87 };
  88
  89 class FixedInvalidationPictureLayerTilingClient
  90     : public PictureLayerTilingClient {
  91  public:
  92   FixedInvalidationPictureLayerTilingClient(
  93       PictureLayerTilingClient* base_client,
  94       const Region invalidation)
  95       : base_client_(base_client), invalidation_(invalidation) {}
  96
  97   virtual scoped_refptr<Tile> CreateTile(
  98       PictureLayerTiling* tiling,
  99       const gfx::Rect& content_rect) OVERRIDE {
 100     return base_client_->CreateTile(tiling, content_rect);
 101   }
 102
 103   virtual PicturePileImpl* GetPile() OVERRIDE {
 104     return base_client_->GetPile();
 105   }
 106
 107   virtual gfx::Size CalculateTileSize(
 108       const gfx::Size& content_bounds) const OVERRIDE {
 109     return base_client_->CalculateTileSize(content_bounds);
 110   }
 111
 112   // This is the only function that returns something different from the base
 113   // client.
 114   virtual const Region* GetInvalidation() OVERRIDE { return &invalidation_; }
 115
 116   virtual const PictureLayerTiling* GetTwinTiling(
 117       const PictureLayerTiling* tiling) const OVERRIDE {
 118     return base_client_->GetTwinTiling(tiling);
 119   }
 120
 121   virtual size_t GetMaxTilesForInterestArea() const OVERRIDE {
 122     return base_client_->GetMaxTilesForInterestArea();
 123   }
 124
 125   virtual float GetSkewportTargetTimeInSeconds() const OVERRIDE {
 126     return base_client_->GetSkewportTargetTimeInSeconds();
 127   }
 128
 129   virtual int GetSkewportExtrapolationLimitInContentPixels() const OVERRIDE {
 130     return base_client_->GetSkewportExtrapolationLimitInContentPixels();
 131   }
 132
 133   virtual WhichTree GetTree() const OVERRIDE { return base_client_->GetTree(); }
 134
 135  private:
 136   PictureLayerTilingClient* base_client_;
 137   Region invalidation_;
 138 };
 139
 140 }  // namespace
 141
 142 RasterizeAndRecordBenchmarkImpl::RasterizeAndRecordBenchmarkImpl(
 143     scoped_refptr<base::MessageLoopProxy> origin_loop,
 144     base::Value* value,
 145     const MicroBenchmarkImpl::DoneCallback& callback)
 146     : MicroBenchmarkImpl(callback, origin_loop),
 147       rasterize_repeat_count_(kDefaultRasterizeRepeatCount) {
 148   base::DictionaryValue* settings = NULL;
 149   value->GetAsDictionary(&settings);
 150   if (!settings)
 151     return;
 152
 153   if (settings->HasKey("rasterize_repeat_count"))
 154     settings->GetInteger("rasterize_repeat_count", &rasterize_repeat_count_);
 155 }
 156
 157 RasterizeAndRecordBenchmarkImpl::~RasterizeAndRecordBenchmarkImpl() {}
 158
 159 void RasterizeAndRecordBenchmarkImpl::DidCompleteCommit(
 160     LayerTreeHostImpl* host) {
 161   LayerTreeHostCommon::CallFunctionForSubtree(
 162       host->RootLayer(),
 163       base::Bind(&RasterizeAndRecordBenchmarkImpl::Run,
 164                  base::Unretained(this)));
 165
 166   scoped_ptr<base::DictionaryValue> result(new base::DictionaryValue());
 167   result->SetDouble("rasterize_time_ms",
 168                     rasterize_results_.total_best_time.InMillisecondsF());
 169   result->SetInteger("pixels_rasterized", rasterize_results_.pixels_rasterized);
 170   result->SetInteger("pixels_rasterized_with_non_solid_color",
 171                      rasterize_results_.pixels_rasterized_with_non_solid_color);
 172   result->SetInteger("pixels_rasterized_as_opaque",
 173                      rasterize_results_.pixels_rasterized_as_opaque);
 174   result->SetInteger("total_layers", rasterize_results_.total_layers);
 175   result->SetInteger("total_picture_layers",
 176                      rasterize_results_.total_picture_layers);
 177   result->SetInteger("total_picture_layers_with_no_content",
 178                      rasterize_results_.total_picture_layers_with_no_content);
 179   result->SetInteger("total_picture_layers_off_screen",
 180                      rasterize_results_.total_picture_layers_off_screen);
 181
 182   NotifyDone(result.PassAs<base::Value>());
 183 }
 184
 185 void RasterizeAndRecordBenchmarkImpl::Run(LayerImpl* layer) {
 186   rasterize_results_.total_layers++;
 187   layer->RunMicroBenchmark(this);
 188 }
 189
 190 void RasterizeAndRecordBenchmarkImpl::RunOnLayer(PictureLayerImpl* layer) {
 191   rasterize_results_.total_picture_layers++;
 192   if (!layer->DrawsContent()) {
 193     rasterize_results_.total_picture_layers_with_no_content++;
 194     return;
 195   }
 196   if (layer->visible_content_rect().IsEmpty()) {
 197     rasterize_results_.total_picture_layers_off_screen++;
 198     return;
 199   }
 200
 201   TaskGraphRunner* task_graph_runner = RasterWorkerPool::GetTaskGraphRunner();
 202   DCHECK(task_graph_runner);
 203
 204   if (!task_namespace_.IsValid())
 205     task_namespace_ = task_graph_runner->GetNamespaceToken();
 206
 207   FixedInvalidationPictureLayerTilingClient client(
 208       layer, gfx::Rect(layer->content_bounds()));
 209   PictureLayerTilingSet tiling_set(&client, layer->content_bounds());
 210
 211   PictureLayerTiling* tiling = tiling_set.AddTiling(layer->contents_scale_x());
 212   tiling->CreateAllTilesForTesting();
 213   for (PictureLayerTiling::CoverageIterator it(
 214            tiling, layer->contents_scale_x(), layer->visible_content_rect());
 215        it;
 216        ++it) {
 217     DCHECK(*it);
 218
 219     PicturePileImpl* picture_pile = (*it)->picture_pile();
 220     gfx::Rect content_rect = (*it)->content_rect();
 221     float contents_scale = (*it)->contents_scale();
 222
 223     scoped_refptr<BenchmarkRasterTask> benchmark_raster_task(
 224         new BenchmarkRasterTask(picture_pile,
 225                                 content_rect,
 226                                 contents_scale,
 227                                 rasterize_repeat_count_));
 228
 229     TaskGraph graph;
 230
 231     graph.nodes.push_back(
 232         TaskGraph::Node(benchmark_raster_task.get(),
 233                         RasterWorkerPool::kBenchmarkRasterTaskPriority,
 234                         0u));
 235
 236     task_graph_runner->ScheduleTasks(task_namespace_, &graph);
 237     task_graph_runner->WaitForTasksToFinishRunning(task_namespace_);
 238
 239     Task::Vector completed_tasks;
 240     task_graph_runner->CollectCompletedTasks(task_namespace_, &completed_tasks);
 241     DCHECK_EQ(1u, completed_tasks.size());
 242     DCHECK_EQ(completed_tasks[0], benchmark_raster_task);
 243
 244     int tile_size = content_rect.width() * content_rect.height();
 245     base::TimeDelta min_time = benchmark_raster_task->GetBestTime();
 246     bool is_solid_color = benchmark_raster_task->IsSolidColor();
 247
 248     if (layer->contents_opaque())
 249       rasterize_results_.pixels_rasterized_as_opaque += tile_size;
 250
 251     if (!is_solid_color) {
 252       rasterize_results_.pixels_rasterized_with_non_solid_color += tile_size;
 253     }
 254
 255     rasterize_results_.pixels_rasterized += tile_size;
 256     rasterize_results_.total_best_time += min_time;
 257   }
 258 }
 259
 260 RasterizeAndRecordBenchmarkImpl::RasterizeResults::RasterizeResults()
 261     : pixels_rasterized(0),
 262       pixels_rasterized_with_non_solid_color(0),
 263       pixels_rasterized_as_opaque(0),
 264       total_layers(0),
 265       total_picture_layers(0),
 266       total_picture_layers_with_no_content(0),
 267       total_picture_layers_off_screen(0) {}
 268
 269 RasterizeAndRecordBenchmarkImpl::RasterizeResults::~RasterizeResults() {}
 270
 271 }  // namespace cc