Track the cost of impl-side painting.

cc/tile_manager.h

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_TILE_MANAGER_H_
 #define CC_TILE_MANAGER_H_
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 #include "cc/resource_pool.h"
 #include "cc/tile_priority.h"
 
 namespace base {
 class SequencedWorkerPool;
 }
 
 namespace cc {
 
 class Tile;
 class TileVersion;
+class RenderingStats;
 class ResourceProvider;
 
 class CC_EXPORT TileManagerClient {
  public:
   virtual void ScheduleManageTiles() = 0;
   virtual void ScheduleRedraw() = 0;
 
  protected:
   virtual ~TileManagerClient() {}
 };
@@ skipping 34 matching lines @@
 class CC_EXPORT TileManager {
  public:
   TileManager(TileManagerClient* client, ResourceProvider *resource_provider);
   virtual ~TileManager();
 
   const GlobalStateThatImpactsTilePriority& GlobalState() const { return global_state_; }
   void SetGlobalState(const GlobalStateThatImpactsTilePriority& state);
 
   void ManageTiles();
 
+  void renderingStats(RenderingStats*);
+
  protected:
   // Methods called by Tile
   friend class Tile;
   void RegisterTile(Tile*);
   void UnregisterTile(Tile*);
   void WillModifyTilePriority(Tile*, WhichTree, const TilePriority& new_priority);
 
  private:
   void AssignGpuMemoryToTiles();
   void FreeResourcesForTile(Tile*);
@@ skipping 10 matching lines @@
   scoped_ptr<ResourcePool> resource_pool_;
   bool manage_tiles_pending_;
   int pending_raster_tasks_;
   scoped_refptr<base::SequencedWorkerPool> worker_pool_;
 
   GlobalStateThatImpactsTilePriority global_state_;
 
   typedef std::vector<Tile*> TileVector;
   TileVector tiles_;
   TileVector tiles_that_need_to_be_rasterized_;
+

[nduca, 2012/11/29 18:16:30]

Here, you could consider just a RenderingStats object, by value.

Then we can copy the rendering time value into the rendering stats pointer
during ::renderingStats  call. Or you could make a TileManagerStats object that
we put both rasterized time and pixel count inside.

[Tom Hudson, 2012/11/29 20:30:31]

Done.

+  double rasterize_time_in_seconds_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TILE_MANAGER_H_