cc: Optimize decode scheduling for checker-images.

cc/tiles/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_TILES_TILE_MANAGER_H_
 #define CC_TILES_TILE_MANAGER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 146 matching lines @@
   BasicStateAsValue() const;
   void BasicStateAsValueInto(base::trace_event::TracedValue* dict) const;
   const MemoryHistory::Entry& memory_stats_from_last_assign() const {
     return memory_stats_from_last_assign_;
   }
 
   // Public methods for testing.
   void InitializeTilesWithResourcesForTesting(const std::vector<Tile*>& tiles) {
     for (size_t i = 0; i < tiles.size(); ++i) {
       TileDrawInfo& draw_info = tiles[i]->draw_info();
-      draw_info.set_resource(resource_pool_->AcquireResource(
-          tiles[i]->desired_texture_size(),
-          raster_buffer_provider_->GetResourceFormat(false),
-          client_->GetRasterColorSpace()));
+      draw_info.set_resource(
+          resource_pool_->AcquireResource(
+              tiles[i]->desired_texture_size(),
+              raster_buffer_provider_->GetResourceFormat(false),
+              client_->GetRasterColorSpace()),
+          false);
       draw_info.set_resource_ready_for_draw();
     }
   }
 
   void ReleaseTileResourcesForTesting(const std::vector<Tile*>& tiles) {
     for (size_t i = 0; i < tiles.size(); ++i) {
       Tile* tile = tiles[i];
       FreeResourcesForTile(tile);
     }
   }
@@ skipping 46 matching lines @@
   void SetDecodedImageTracker(DecodedImageTracker* decoded_image_tracker);
 
   // CheckerImageTrackerClient implementation.
   void NeedsInvalidationForCheckerImagedTiles() override;
 
   // This method can only be used for debugging information, since it performs a
   // non trivial amount of work.
   std::unique_ptr<base::trace_event::ConvertableToTraceFormat>
   ActivationStateAsValue();
 
+  int num_of_tiles_with_checker_images() const {
+    return num_of_tiles_with_checker_images_;
+  }
+
  protected:
   friend class Tile;
   // Must be called by tile during destruction.
   void Release(Tile* tile);
   Tile::Id GetUniqueTileId() { return ++next_tile_id_; }
 
  private:
   class MemoryUsage {
    public:
     MemoryUsage();
@@ skipping 27 matching lines @@
     bool did_notify_all_tile_tasks_completed;
   };
 
   struct PrioritizedWorkToSchedule {
     PrioritizedWorkToSchedule();
     PrioritizedWorkToSchedule(PrioritizedWorkToSchedule&& other);
     ~PrioritizedWorkToSchedule();
 
     std::vector<PrioritizedTile> tiles_to_raster;
     std::vector<PrioritizedTile> tiles_to_process_for_images;
+    CheckerImageTracker::ImageDecodeQueue checker_image_decode_queue;
   };
 
   void FreeResourcesForTile(Tile* tile);
   void FreeResourcesForTileAndNotifyClientIfTileWasReadyToDraw(Tile* tile);
   scoped_refptr<TileTask> CreateRasterTask(
       const PrioritizedTile& prioritized_tile,
-      const gfx::ColorSpace& color_space);
+      const gfx::ColorSpace& color_space,
+      CheckerImageTracker::ImageDecodeQueue* checker_image_decode_queue);
 
   std::unique_ptr<EvictionTilePriorityQueue>
   FreeTileResourcesUntilUsageIsWithinLimit(
       std::unique_ptr<EvictionTilePriorityQueue> eviction_priority_queue,
       const MemoryUsage& limit,
       MemoryUsage* usage);
   std::unique_ptr<EvictionTilePriorityQueue>
   FreeTileResourcesWithLowerPriorityUntilUsageIsWithinLimit(
       std::unique_ptr<EvictionTilePriorityQueue> eviction_priority_queue,
       const MemoryUsage& limit,
@@ skipping 11 matching lines @@
 
   void DidFinishRunningTileTasksRequiredForActivation();
   void DidFinishRunningTileTasksRequiredForDraw();
   void DidFinishRunningAllTileTasks();
 
   scoped_refptr<TileTask> CreateTaskSetFinishedTask(
       void (TileManager::*callback)());
   PrioritizedWorkToSchedule AssignGpuMemoryToTiles();
   void ScheduleTasks(const PrioritizedWorkToSchedule& work_to_schedule);
 
+  void PartitionImagesForCheckering(
+      const PrioritizedTile& prioritized_tile,
+      const gfx::ColorSpace& raster_color_space,
+      std::vector<DrawImage>* sync_decoded_images,
+      std::vector<sk_sp<const SkImage>>* checkered_images);
+  void AddCheckeredImagesToDecodeQueue(
+      const PrioritizedTile& prioritized_tile,
+      const gfx::ColorSpace& raster_color_space,
+      CheckerImageTracker::ImageDecodeQueue* image_decode_queue);
+
   std::unique_ptr<base::trace_event::ConvertableToTraceFormat>
   ScheduledTasksStateAsValue() const;
 
   bool UsePartialRaster() const;
 
   void CheckPendingGpuWorkTiles(bool issue_signals);
 
   TileManagerClient* client_;
   base::SequencedTaskRunner* task_runner_;
   ResourcePool* resource_pool_;
@@ skipping 34 matching lines @@
   std::unordered_set<Tile*> pending_gpu_work_tiles_;
   uint64_t pending_required_for_activation_callback_id_ = 0;
   uint64_t pending_required_for_draw_callback_id_ = 0;
   // If true, we should re-compute tile requirements in
   // CheckPendingGpuWorkTiles.
   bool pending_tile_requirements_dirty_ = false;
 
   std::unordered_map<Tile::Id, std::vector<DrawImage>> scheduled_draw_images_;
   std::vector<scoped_refptr<TileTask>> locked_image_tasks_;
 
+  // Number of tiles with a checker-imaged resource or active raster tasks which
+  // will create a checker-imaged resource.
+  int num_of_tiles_with_checker_images_ = 0;
+
   // We need two WeakPtrFactory objects as the invalidation pattern of each is
   // different. The |task_set_finished_weak_ptr_factory_| is invalidated any
   // time new tasks are scheduled, preventing a race when the callback has
   // been scheduled but not yet executed.
   base::WeakPtrFactory<TileManager> task_set_finished_weak_ptr_factory_;
   // The |ready_to_draw_callback_weak_ptr_factory_| is never invalidated.
   base::WeakPtrFactory<TileManager> ready_to_draw_callback_weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(TileManager);
 };
 
 }  // namespace cc
 
 #endif  // CC_TILES_TILE_MANAGER_H_