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(const Tile::CreateInfo& info) override {
  77     return base_client_->CreateTile(info);
  78   }
  79
  80   gfx::Size CalculateTileSize(const gfx::Size& content_bounds) const override {
  81     return base_client_->CalculateTileSize(content_bounds);
  82   }
  83
  84   // This is the only function that returns something different from the base
  85   // client. Avoids sharing tiles in this area.
  86   const Region* GetPendingInvalidation() override { return &invalidation_; }
  87
  88   const PictureLayerTiling* GetPendingOrActiveTwinTiling(
  89       const PictureLayerTiling* tiling) const override {
  90     return base_client_->GetPendingOrActiveTwinTiling(tiling);
  91   }
  92
  93   bool HasValidTilePriorities() const override {
  94     return base_client_->HasValidTilePriorities();
  95   }
  96
  97   bool RequiresHighResToDraw() const override {
  98     return base_client_->RequiresHighResToDraw();
  99   }
 100
 101  private:
 102   PictureLayerTilingClient* base_client_;
 103   Region invalidation_;
 104 };
 105
 106 }  // namespace
 107
 108 RasterizeAndRecordBenchmarkImpl::RasterizeAndRecordBenchmarkImpl(
 109     scoped_refptr<base::SingleThreadTaskRunner> origin_task_runner,
 110     base::Value* value,
 111     const MicroBenchmarkImpl::DoneCallback& callback)
 112     : MicroBenchmarkImpl(callback, origin_task_runner),
 113       rasterize_repeat_count_(kDefaultRasterizeRepeatCount) {
 114   base::DictionaryValue* settings = nullptr;
 115   value->GetAsDictionary(&settings);
 116   if (!settings)
 117     return;
 118
 119   if (settings->HasKey("rasterize_repeat_count"))
 120     settings->GetInteger("rasterize_repeat_count", &rasterize_repeat_count_);
 121 }
 122
 123 RasterizeAndRecordBenchmarkImpl::~RasterizeAndRecordBenchmarkImpl() {}
 124
 125 void RasterizeAndRecordBenchmarkImpl::DidCompleteCommit(
 126     LayerTreeHostImpl* host) {
 127   LayerTreeHostCommon::CallFunctionForSubtree(
 128       host->RootLayer(), [this](LayerImpl* layer) {
 129         rasterize_results_.total_layers++;
 130         layer->RunMicroBenchmark(this);
 131       });
 132
 133   scoped_ptr<base::DictionaryValue> result(new base::DictionaryValue());
 134   result->SetDouble("rasterize_time_ms",
 135                     rasterize_results_.total_best_time.InMillisecondsF());
 136   result->SetDouble("total_pictures_in_pile_size",
 137                     static_cast<int>(rasterize_results_.total_memory_usage));
 138   result->SetInteger("pixels_rasterized", rasterize_results_.pixels_rasterized);
 139   result->SetInteger("pixels_rasterized_with_non_solid_color",
 140                      rasterize_results_.pixels_rasterized_with_non_solid_color);
 141   result->SetInteger("pixels_rasterized_as_opaque",
 142                      rasterize_results_.pixels_rasterized_as_opaque);
 143   result->SetInteger("total_layers", rasterize_results_.total_layers);
 144   result->SetInteger("total_picture_layers",
 145                      rasterize_results_.total_picture_layers);
 146   result->SetInteger("total_picture_layers_with_no_content",
 147                      rasterize_results_.total_picture_layers_with_no_content);
 148   result->SetInteger("total_picture_layers_off_screen",
 149                      rasterize_results_.total_picture_layers_off_screen);
 150
 151   NotifyDone(result.Pass());
 152 }
 153
 154 void RasterizeAndRecordBenchmarkImpl::RunOnLayer(PictureLayerImpl* layer) {
 155   rasterize_results_.total_picture_layers++;
 156   if (!layer->CanHaveTilings()) {
 157     rasterize_results_.total_picture_layers_with_no_content++;
 158     return;
 159   }
 160   if (layer->visible_layer_rect().IsEmpty()) {
 161     rasterize_results_.total_picture_layers_off_screen++;
 162     return;
 163   }
 164
 165   FixedInvalidationPictureLayerTilingClient client(layer,
 166                                                    gfx::Rect(layer->bounds()));
 167
 168   // In this benchmark, we will create a local tiling set and measure how long
 169   // it takes to rasterize content. As such, the actual settings used here don't
 170   // really matter.
 171   const LayerTreeSettings& settings = layer->layer_tree_impl()->settings();
 172   scoped_ptr<PictureLayerTilingSet> tiling_set = PictureLayerTilingSet::Create(
 173       layer->GetTree(), &client, settings.tiling_interest_area_padding,
 174       settings.skewport_target_time_in_seconds,
 175       settings.skewport_extrapolation_limit_in_content_pixels);
 176
 177   PictureLayerTiling* tiling =
 178       tiling_set->AddTiling(1.f, layer->GetRasterSource());
 179   tiling->set_resolution(HIGH_RESOLUTION);
 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