src/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/layers/layer_impl.h"
  13 #include "cc/layers/picture_layer_impl.h"
  14 #include "cc/resources/raster_worker_pool.h"
  15 #include "cc/trees/layer_tree_host_common.h"
  16 #include "cc/trees/layer_tree_host_impl.h"
  17 #include "ui/gfx/rect.h"
  18
  19 namespace cc {
  20
  21 namespace {
  22
  23 const int kDefaultRasterizeRepeatCount = 100;
  24
  25 base::TimeTicks Now() {
  26   return base::TimeTicks::IsThreadNowSupported()
  27              ? base::TimeTicks::ThreadNow()
  28              : base::TimeTicks::HighResNow();
  29 }
  30
  31 class BenchmarkRasterTask : public Task {
  32  public:
  33   BenchmarkRasterTask(PicturePileImpl* picture_pile,
  34                       const gfx::Rect& content_rect,
  35                       float contents_scale,
  36                       size_t repeat_count)
  37       : picture_pile_(picture_pile),
  38         content_rect_(content_rect),
  39         contents_scale_(contents_scale),
  40         repeat_count_(repeat_count),
  41         is_solid_color_(false),
  42         best_time_(base::TimeDelta::Max()) {}
  43
  44   // Overridden from Task:
  45   virtual void RunOnWorkerThread() OVERRIDE {
  46     PicturePileImpl* picture_pile = picture_pile_->GetCloneForDrawingOnThread(
  47         RasterWorkerPool::GetPictureCloneIndexForCurrentThread());
  48
  49     for (size_t i = 0; i < repeat_count_; ++i) {
  50       SkBitmap bitmap;
  51       bitmap.allocPixels(SkImageInfo::MakeN32Premul(content_rect_.width(),
  52                                                     content_rect_.height()));
  53       SkCanvas canvas(bitmap);
  54       PicturePileImpl::Analysis analysis;
  55
  56       base::TimeTicks start = Now();
  57       picture_pile->AnalyzeInRect(
  58           content_rect_, contents_scale_, &analysis, NULL);
  59       picture_pile->RasterToBitmap(
  60           &canvas, content_rect_, contents_scale_, NULL);
  61       base::TimeTicks end = Now();
  62       base::TimeDelta duration = end - start;
  63       if (duration < best_time_)
  64         best_time_ = duration;
  65
  66       is_solid_color_ = analysis.is_solid_color;
  67     }
  68   }
  69
  70   bool IsSolidColor() const { return is_solid_color_; }
  71   base::TimeDelta GetBestTime() const { return best_time_; }
  72
  73  private:
  74   virtual ~BenchmarkRasterTask() {}
  75
  76   PicturePileImpl* picture_pile_;
  77   gfx::Rect content_rect_;
  78   float contents_scale_;
  79   size_t repeat_count_;
  80   bool is_solid_color_;
  81   base::TimeDelta best_time_;
  82 };
  83
  84 }  // namespace
  85
  86 RasterizeAndRecordBenchmarkImpl::RasterizeAndRecordBenchmarkImpl(
  87     scoped_refptr<base::MessageLoopProxy> origin_loop,
  88     base::Value* value,
  89     const MicroBenchmarkImpl::DoneCallback& callback)
  90     : MicroBenchmarkImpl(callback, origin_loop),
  91       rasterize_repeat_count_(kDefaultRasterizeRepeatCount) {
  92   base::DictionaryValue* settings = NULL;
  93   value->GetAsDictionary(&settings);
  94   if (!settings)
  95     return;
  96
  97   if (settings->HasKey("rasterize_repeat_count"))
  98     settings->GetInteger("rasterize_repeat_count", &rasterize_repeat_count_);
  99 }
 100
 101 RasterizeAndRecordBenchmarkImpl::~RasterizeAndRecordBenchmarkImpl() {}
 102
 103 void RasterizeAndRecordBenchmarkImpl::DidCompleteCommit(
 104     LayerTreeHostImpl* host) {
 105   LayerTreeHostCommon::CallFunctionForSubtree(
 106       host->RootLayer(),
 107       base::Bind(&RasterizeAndRecordBenchmarkImpl::Run,
 108                  base::Unretained(this)));
 109
 110   scoped_ptr<base::DictionaryValue> result(new base::DictionaryValue());
 111   result->SetDouble("rasterize_time_ms",
 112                     rasterize_results_.total_best_time.InMillisecondsF());
 113   result->SetInteger("pixels_rasterized", rasterize_results_.pixels_rasterized);
 114   result->SetInteger("pixels_rasterized_with_non_solid_color",
 115                      rasterize_results_.pixels_rasterized_with_non_solid_color);
 116   result->SetInteger("pixels_rasterized_as_opaque",
 117                      rasterize_results_.pixels_rasterized_as_opaque);
 118   result->SetInteger("total_layers", rasterize_results_.total_layers);
 119   result->SetInteger("total_picture_layers",
 120                      rasterize_results_.total_picture_layers);
 121   result->SetInteger("total_picture_layers_with_no_content",
 122                      rasterize_results_.total_picture_layers_with_no_content);
 123   result->SetInteger("total_picture_layers_off_screen",
 124                      rasterize_results_.total_picture_layers_off_screen);
 125
 126   NotifyDone(result.PassAs<base::Value>());
 127 }
 128
 129 void RasterizeAndRecordBenchmarkImpl::Run(LayerImpl* layer) {
 130   rasterize_results_.total_layers++;
 131   layer->RunMicroBenchmark(this);
 132 }
 133
 134 void RasterizeAndRecordBenchmarkImpl::RunOnLayer(PictureLayerImpl* layer) {
 135   rasterize_results_.total_picture_layers++;
 136   if (!layer->DrawsContent()) {
 137     rasterize_results_.total_picture_layers_with_no_content++;
 138     return;
 139   }
 140   if (layer->visible_content_rect().IsEmpty()) {
 141     rasterize_results_.total_picture_layers_off_screen++;
 142     return;
 143   }
 144
 145   TaskGraphRunner* task_graph_runner = RasterWorkerPool::GetTaskGraphRunner();
 146   DCHECK(task_graph_runner);
 147
 148   if (!task_namespace_.IsValid())
 149     task_namespace_ = task_graph_runner->GetNamespaceToken();
 150
 151   PictureLayerTilingSet tiling_set(layer, layer->content_bounds());
 152
 153   PictureLayerTiling* tiling = tiling_set.AddTiling(layer->contents_scale_x());
 154   tiling->CreateAllTilesForTesting();
 155   for (PictureLayerTiling::CoverageIterator it(
 156            tiling, layer->contents_scale_x(), layer->visible_content_rect());
 157        it;
 158        ++it) {
 159     DCHECK(*it);
 160
 161     PicturePileImpl* picture_pile = (*it)->picture_pile();
 162     gfx::Rect content_rect = (*it)->content_rect();
 163     float contents_scale = (*it)->contents_scale();
 164
 165     scoped_refptr<BenchmarkRasterTask> benchmark_raster_task(
 166         new BenchmarkRasterTask(picture_pile,
 167                                 content_rect,
 168                                 contents_scale,
 169                                 rasterize_repeat_count_));
 170
 171     TaskGraph graph;
 172
 173     graph.nodes.push_back(
 174         TaskGraph::Node(benchmark_raster_task,
 175                         RasterWorkerPool::kBenchmarkRasterTaskPriority,
 176                         0u));
 177
 178     task_graph_runner->ScheduleTasks(task_namespace_, &graph);
 179     task_graph_runner->WaitForTasksToFinishRunning(task_namespace_);
 180
 181     Task::Vector completed_tasks;
 182     task_graph_runner->CollectCompletedTasks(task_namespace_, &completed_tasks);
 183     DCHECK_EQ(1u, completed_tasks.size());
 184     DCHECK_EQ(completed_tasks[0], benchmark_raster_task);
 185
 186     int tile_size = content_rect.width() * content_rect.height();
 187     base::TimeDelta min_time = benchmark_raster_task->GetBestTime();
 188     bool is_solid_color = benchmark_raster_task->IsSolidColor();
 189
 190     if (layer->contents_opaque())
 191       rasterize_results_.pixels_rasterized_as_opaque += tile_size;
 192
 193     if (!is_solid_color) {
 194       rasterize_results_.pixels_rasterized_with_non_solid_color += tile_size;
 195     }
 196
 197     rasterize_results_.pixels_rasterized += tile_size;
 198     rasterize_results_.total_best_time += min_time;
 199   }
 200 }
 201
 202 RasterizeAndRecordBenchmarkImpl::RasterizeResults::RasterizeResults()
 203     : pixels_rasterized(0),
 204       pixels_rasterized_with_non_solid_color(0),
 205       pixels_rasterized_as_opaque(0),
 206       total_layers(0),
 207       total_picture_layers(0),
 208       total_picture_layers_with_no_content(0),
 209       total_picture_layers_off_screen(0) {}
 210
 211 RasterizeAndRecordBenchmarkImpl::RasterizeResults::~RasterizeResults() {}
 212
 213 }  // namespace cc