Add preliminary support for hw-accelerated tile rasterization.

cc/resources/raster_worker_pool.h

 // Copyright 2013 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_RESOURCES_RASTER_WORKER_POOL_H_
 #define CC_RESOURCES_RASTER_WORKER_POOL_H_
 
 #include <vector>
 
 #include "base/containers/hash_tables.h"
@@ skipping 16 matching lines @@
  public:
   typedef std::vector<scoped_refptr<WorkerPoolTask> > TaskVector;
 
   // Returns true if |buffer| was written to. False indicate that
   // the content of |buffer| is undefined and the resource doesn't
   // need to be initialized.
   virtual bool RunOnWorkerThread(unsigned thread_index,
                                  void* buffer,
                                  gfx::Size size,
                                  int stride) = 0;
+  virtual void RunOnOriginThread(ResourceProvider* resource_provider,
+                                 ContextProvider* context_provider) = 0;
   virtual void CompleteOnOriginThread() = 0;
 
   void DidRun(bool was_canceled);
   bool HasFinishedRunning() const;
   bool WasCanceled() const;
   void WillComplete();
   void DidComplete();
   bool HasCompleted() const;
 
   const Resource* resource() const { return resource_; }
   const TaskVector& dependencies() const { return dependencies_; }
+  bool use_gpu_rasterization() const { return use_gpu_rasterization_; }
 
  protected:
   friend class base::RefCounted<RasterWorkerPoolTask>;
 
-  RasterWorkerPoolTask(const Resource* resource, TaskVector* dependencies);
+  RasterWorkerPoolTask(const Resource* resource,
+                       TaskVector* dependencies,
+                       bool use_gpu_rasterization);
   virtual ~RasterWorkerPoolTask();
 
  private:
   bool did_run_;
   bool did_complete_;
   bool was_canceled_;
   const Resource* resource_;
   TaskVector dependencies_;
+  bool use_gpu_rasterization_;
 };
 
 }  // namespace internal
 }  // namespace cc
 
 #if defined(COMPILER_GCC)
 namespace BASE_HASH_NAMESPACE {
 template <> struct hash<cc::internal::RasterWorkerPoolTask*> {
   size_t operator()(cc::internal::RasterWorkerPoolTask* ptr) const {
     return hash<size_t>()(reinterpret_cast<size_t>(ptr));
@@ skipping 91 matching lines @@
 
     explicit RasterTask(internal::RasterWorkerPoolTask* internal);
 
     scoped_refptr<internal::RasterWorkerPoolTask> internal_;
   };
 
   virtual ~RasterWorkerPool();
 
   void SetClient(RasterWorkerPoolClient* client);
 
-  // Tells the worker pool to shutdown after canceling all previously
-  // scheduled tasks. Reply callbacks are still guaranteed to run.
+  // Overidden from WorkerPool:
   virtual void Shutdown() OVERRIDE;
 
   // Schedule running of raster tasks in |queue| and all dependencies.
   // Previously scheduled tasks that are no longer needed to run
   // raster tasks in |queue| will be canceled unless already running.
   // Once scheduled, reply callbacks are guaranteed to run for all tasks
   // even if they later get canceled by another call to ScheduleTasks().
   virtual void ScheduleTasks(RasterTask::Queue* queue) = 0;
 
   // Returns the target that needs to be used for raster task resources.
   virtual GLenum GetResourceTarget() const = 0;
 
   // Returns the format that needs to be used for raster task resources.
   virtual ResourceFormat GetResourceFormat() const = 0;
 
+  // Force a check for completed raster tasks.
+  // Calls completion callbacks on completed tasks.
+  virtual void CheckForCompletedTasks();
+
   // TODO(vmpstr): Figure out an elegant way to not pass this many parameters.
   static RasterTask CreateRasterTask(
       const Resource* resource,
       PicturePileImpl* picture_pile,
       gfx::Rect content_rect,
       float contents_scale,
       RasterMode raster_mode,
       TileResolution tile_resolution,
       int layer_id,
       const void* tile_id,
       int source_frame_number,
+      bool use_gpu_rasterization,
       RenderingStatsInstrumentation* rendering_stats,
       const RasterTask::Reply& reply,
       Task::Set* dependencies);
 
   static Task CreateImageDecodeTask(
       SkPixelRef* pixel_ref,
       int layer_id,
       RenderingStatsInstrumentation* stats_instrumentation,
       const Task::Reply& reply);
 
  protected:
   typedef std::vector<scoped_refptr<internal::WorkerPoolTask> > TaskVector;
   typedef std::vector<scoped_refptr<internal::RasterWorkerPoolTask> >
       RasterTaskVector;
+  typedef std::deque<scoped_refptr<internal::RasterWorkerPoolTask> >
+      RasterTaskDeque;
   typedef base::hash_set<internal::RasterWorkerPoolTask*> RasterTaskSet;
   typedef internal::RasterWorkerPoolTask* TaskMapKey;
   typedef base::hash_map<TaskMapKey,
                          scoped_refptr<internal::WorkerPoolTask> > TaskMap;
 
-  RasterWorkerPool(ResourceProvider* resource_provider, size_t num_threads);
+  RasterWorkerPool(ResourceProvider* resource_provider,
+                   ContextProvider* context_provider,
+                   size_t num_threads);
 
   virtual void OnRasterTasksFinished() = 0;
   virtual void OnRasterTasksRequiredForActivationFinished() = 0;
 
   void SetRasterTasks(RasterTask::Queue* queue);
   bool IsRasterTaskRequiredForActivation(
       internal::RasterWorkerPoolTask* task) const;
+  // Run raster tasks that use GPU on current thread.
+  void RunGpuRasterTasks(const RasterTaskVector& tasks);
 
   RasterWorkerPoolClient* client() const { return client_; }
   ResourceProvider* resource_provider() const { return resource_provider_; }
+  ContextProvider* context_provider() const { return context_provider_; }
   const RasterTaskVector& raster_tasks() const { return raster_tasks_; }
   const RasterTaskSet& raster_tasks_required_for_activation() const {
     return raster_tasks_required_for_activation_;
   }
   void set_raster_finished_task(
       scoped_refptr<internal::WorkerPoolTask> raster_finished_task) {
     raster_finished_task_ = raster_finished_task;
   }
   void set_raster_required_for_activation_finished_task(
       scoped_refptr<internal::WorkerPoolTask>
@@ skipping 19 matching lines @@
       unsigned priority,
       TaskGraph* graph);
 
  private:
   void OnRasterFinished(const internal::WorkerPoolTask* source);
   void OnRasterRequiredForActivationFinished(
       const internal::WorkerPoolTask* source);
 
   RasterWorkerPoolClient* client_;
   ResourceProvider* resource_provider_;
+  ContextProvider* context_provider_;
   RasterTask::Queue::TaskVector raster_tasks_;
   RasterTask::Queue::TaskSet raster_tasks_required_for_activation_;
+  RasterTaskDeque completed_gpu_raster_tasks_;
 
   scoped_refptr<internal::WorkerPoolTask> raster_finished_task_;
   scoped_refptr<internal::WorkerPoolTask>
       raster_required_for_activation_finished_task_;
   base::WeakPtrFactory<RasterWorkerPool> weak_ptr_factory_;
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_RASTER_WORKER_POOL_H_