cc/resources/gpu_tile_task_worker_pool.cc

   1 // Copyright 2014 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/resources/gpu_tile_task_worker_pool.h"
   6
   7 #include <algorithm>
   8
   9 #include "base/debug/trace_event.h"
  10 #include "cc/resources/raster_buffer.h"
  11 #include "cc/resources/raster_source.h"
  12 #include "cc/resources/resource.h"
  13 #include "cc/resources/scoped_gpu_raster.h"
  14 #include "gpu/command_buffer/client/gles2_interface.h"
  15 #include "third_party/skia/include/core/SkMultiPictureDraw.h"
  16 #include "third_party/skia/include/core/SkPictureRecorder.h"
  17 #include "third_party/skia/include/core/SkSurface.h"
  18 #include "third_party/skia/include/gpu/GrContext.h"
  19
  20 namespace cc {
  21 namespace {
  22
  23 class RasterBufferImpl : public RasterBuffer {
  24  public:
  25   RasterBufferImpl() {}
  26
  27   // Overridden from RasterBuffer:
  28   void Playback(const RasterSource* raster_source,
  29                 const gfx::Rect& rect,
  30                 float scale) override {
  31     // Don't do anything.
  32   }
  33
  34  private:
  35   DISALLOW_COPY_AND_ASSIGN(RasterBufferImpl);
  36 };
  37
  38 }  // namespace
  39 // static
  40 scoped_ptr<TileTaskWorkerPool> GpuTileTaskWorkerPool::Create(
  41     base::SequencedTaskRunner* task_runner,
  42     TaskGraphRunner* task_graph_runner) {
  43   return make_scoped_ptr<TileTaskWorkerPool>(
  44       new GpuTileTaskWorkerPool(task_runner, task_graph_runner));
  45 }
  46
  47 // TODO(hendrikw): This class should be removed.  See crbug.com/444938.
  48 GpuTileTaskWorkerPool::GpuTileTaskWorkerPool(
  49     base::SequencedTaskRunner* task_runner,
  50     TaskGraphRunner* task_graph_runner)
  51     : task_runner_(task_runner),
  52       task_graph_runner_(task_graph_runner),
  53       namespace_token_(task_graph_runner_->GetNamespaceToken()),
  54       task_set_finished_weak_ptr_factory_(this),
  55       weak_ptr_factory_(this) {
  56 }
  57
  58 GpuTileTaskWorkerPool::~GpuTileTaskWorkerPool() {
  59   DCHECK_EQ(0u, completed_tasks_.size());
  60 }
  61
  62 TileTaskRunner* GpuTileTaskWorkerPool::AsTileTaskRunner() {
  63   return this;
  64 }
  65
  66 void GpuTileTaskWorkerPool::SetClient(TileTaskRunnerClient* client) {
  67   client_ = client;
  68 }
  69
  70 void GpuTileTaskWorkerPool::Shutdown() {
  71   TRACE_EVENT0("cc", "GpuTileTaskWorkerPool::Shutdown");
  72
  73   TaskGraph empty;
  74   task_graph_runner_->ScheduleTasks(namespace_token_, &empty);
  75   task_graph_runner_->WaitForTasksToFinishRunning(namespace_token_);
  76 }
  77
  78 void GpuTileTaskWorkerPool::ScheduleTasks(TileTaskQueue* queue) {
  79   TRACE_EVENT0("cc", "GpuTileTaskWorkerPool::ScheduleTasks");
  80
  81   // Mark all task sets as pending.
  82   tasks_pending_.set();
  83
  84   unsigned priority = kTileTaskPriorityBase;
  85
  86   graph_.Reset();
  87
  88   // Cancel existing OnTaskSetFinished callbacks.
  89   task_set_finished_weak_ptr_factory_.InvalidateWeakPtrs();
  90
  91   scoped_refptr<TileTask> new_task_set_finished_tasks[kNumberOfTaskSets];
  92
  93   size_t task_count[kNumberOfTaskSets] = {0};
  94
  95   for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set) {
  96     new_task_set_finished_tasks[task_set] = CreateTaskSetFinishedTask(
  97         task_runner_.get(),
  98         base::Bind(&GpuTileTaskWorkerPool::OnTaskSetFinished,
  99                    task_set_finished_weak_ptr_factory_.GetWeakPtr(), task_set));
 100   }
 101
 102   for (TileTaskQueue::Item::Vector::const_iterator it = queue->items.begin();
 103        it != queue->items.end(); ++it) {
 104     const TileTaskQueue::Item& item = *it;
 105     RasterTask* task = item.task;
 106     DCHECK(!task->HasCompleted());
 107
 108     for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set) {
 109       if (!item.task_sets[task_set])
 110         continue;
 111
 112       ++task_count[task_set];
 113
 114       graph_.edges.push_back(
 115           TaskGraph::Edge(task, new_task_set_finished_tasks[task_set].get()));
 116     }
 117
 118     InsertNodesForRasterTask(&graph_, task, task->dependencies(), priority++);
 119   }
 120
 121   for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set) {
 122     InsertNodeForTask(&graph_, new_task_set_finished_tasks[task_set].get(),
 123                       kTaskSetFinishedTaskPriority, task_count[task_set]);
 124   }
 125
 126   ScheduleTasksOnOriginThread(this, &graph_);
 127   task_graph_runner_->ScheduleTasks(namespace_token_, &graph_);
 128
 129   std::copy(new_task_set_finished_tasks,
 130             new_task_set_finished_tasks + kNumberOfTaskSets,
 131             task_set_finished_tasks_);
 132 }
 133
 134 void GpuTileTaskWorkerPool::CheckForCompletedTasks() {
 135   TRACE_EVENT0("cc", "GpuTileTaskWorkerPool::CheckForCompletedTasks");
 136
 137   task_graph_runner_->CollectCompletedTasks(namespace_token_,
 138                                             &completed_tasks_);
 139   CompleteTasks(completed_tasks_);
 140   completed_tasks_.clear();
 141 }
 142
 143 void GpuTileTaskWorkerPool::CompleteTasks(const Task::Vector& tasks) {
 144   for (auto& task : tasks) {
 145     RasterTask* raster_task = static_cast<RasterTask*>(task.get());
 146
 147     raster_task->WillComplete();
 148     raster_task->CompleteOnOriginThread(this);
 149     raster_task->DidComplete();
 150
 151     raster_task->RunReplyOnOriginThread();
 152   }
 153   completed_tasks_.clear();
 154 }
 155
 156 scoped_ptr<RasterBuffer> GpuTileTaskWorkerPool::AcquireBufferForRaster(
 157     const Resource* resource) {
 158   return make_scoped_ptr<RasterBuffer>(new RasterBufferImpl());
 159 }
 160
 161 void GpuTileTaskWorkerPool::ReleaseBufferForRaster(
 162     scoped_ptr<RasterBuffer> buffer) {
 163   // Nothing to do here. RasterBufferImpl destructor cleans up after itself.
 164 }
 165
 166 void GpuTileTaskWorkerPool::OnTaskSetFinished(TaskSet task_set) {
 167   TRACE_EVENT1("cc", "GpuTileTaskWorkerPool::OnTaskSetFinished", "task_set",
 168                task_set);
 169
 170   DCHECK(tasks_pending_[task_set]);
 171   tasks_pending_[task_set] = false;
 172   client_->DidFinishRunningTileTasks(task_set);
 173 }
 174
 175 }  // namespace cc