cc/raster/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/raster/gpu_tile_task_worker_pool.h"
   6
   7 #include <algorithm>
   8
   9 #include "base/trace_event/trace_event.h"
  10 #include "cc/playback/raster_source.h"
  11 #include "cc/raster/gpu_rasterizer.h"
  12 #include "cc/raster/raster_buffer.h"
  13 #include "cc/raster/scoped_gpu_raster.h"
  14 #include "cc/resources/resource.h"
  15 #include "gpu/command_buffer/client/gles2_interface.h"
  16 #include "third_party/skia/include/core/SkMultiPictureDraw.h"
  17 #include "third_party/skia/include/core/SkPictureRecorder.h"
  18 #include "third_party/skia/include/core/SkSurface.h"
  19 #include "third_party/skia/include/gpu/GrContext.h"
  20
  21 namespace cc {
  22 namespace {
  23
  24 class RasterBufferImpl : public RasterBuffer {
  25  public:
  26   RasterBufferImpl(GpuRasterizer* rasterizer,
  27                    const Resource* resource,
  28                    uint64_t resource_content_id,
  29                    uint64_t previous_content_id)
  30       : rasterizer_(rasterizer),
  31         lock_(rasterizer->resource_provider(), resource->id()),
  32         resource_has_previous_content_(
  33             resource_content_id && resource_content_id == previous_content_id) {
  34   }
  35
  36   // Overridden from RasterBuffer:
  37   void Playback(const RasterSource* raster_source,
  38                 const gfx::Rect& raster_full_rect,
  39                 const gfx::Rect& raster_dirty_rect,
  40                 uint64_t new_content_id,
  41                 float scale,
  42                 bool include_images) override {
  43     TRACE_EVENT0("cc", "RasterBufferImpl::Playback");
  44     // GPU raster doesn't do low res tiles, so should always include images.
  45     DCHECK(include_images);
  46     ContextProvider* context_provider = rasterizer_->resource_provider()
  47                                             ->output_surface()
  48                                             ->worker_context_provider();
  49
  50     // The context lock must be held while accessing the context on a
  51     // worker thread.
  52     base::AutoLock context_lock(*context_provider->GetLock());
  53
  54     // Allow this worker thread to bind to context_provider.
  55     context_provider->DetachFromThread();
  56
  57     gfx::Rect playback_rect = raster_full_rect;
  58     if (resource_has_previous_content_) {
  59       playback_rect.Intersect(raster_dirty_rect);
  60     }
  61     DCHECK(!playback_rect.IsEmpty())
  62         << "Why are we rastering a tile that's not dirty?";
  63
  64     // TODO(danakj): Implement partial raster with raster_dirty_rect.
  65     // Rasterize source into resource.
  66     rasterizer_->RasterizeSource(&lock_, raster_source, raster_full_rect,
  67                                  playback_rect, scale);
  68
  69     // Barrier to sync worker context output to cc context.
  70     context_provider->ContextGL()->OrderingBarrierCHROMIUM();
  71
  72     // Allow compositor thread to bind to context_provider.
  73     context_provider->DetachFromThread();
  74   }
  75
  76  private:
  77   GpuRasterizer* rasterizer_;
  78   ResourceProvider::ScopedWriteLockGr lock_;
  79   bool resource_has_previous_content_;
  80
  81   DISALLOW_COPY_AND_ASSIGN(RasterBufferImpl);
  82 };
  83
  84 }  // namespace
  85
  86 // static
  87 scoped_ptr<TileTaskWorkerPool> GpuTileTaskWorkerPool::Create(
  88     base::SequencedTaskRunner* task_runner,
  89     TaskGraphRunner* task_graph_runner,
  90     ContextProvider* context_provider,
  91     ResourceProvider* resource_provider,
  92     bool use_distance_field_text,
  93     int gpu_rasterization_msaa_sample_count) {
  94   return make_scoped_ptr<TileTaskWorkerPool>(new GpuTileTaskWorkerPool(
  95       task_runner, task_graph_runner, context_provider, resource_provider,
  96       use_distance_field_text, gpu_rasterization_msaa_sample_count));
  97 }
  98
  99 GpuTileTaskWorkerPool::GpuTileTaskWorkerPool(
 100     base::SequencedTaskRunner* task_runner,
 101     TaskGraphRunner* task_graph_runner,
 102     ContextProvider* context_provider,
 103     ResourceProvider* resource_provider,
 104     bool use_distance_field_text,
 105     int gpu_rasterization_msaa_sample_count)
 106     : task_runner_(task_runner),
 107       task_graph_runner_(task_graph_runner),
 108       namespace_token_(task_graph_runner_->GetNamespaceToken()),
 109       rasterizer_(new GpuRasterizer(context_provider,
 110                                     resource_provider,
 111                                     use_distance_field_text,
 112                                     gpu_rasterization_msaa_sample_count)),
 113       task_set_finished_weak_ptr_factory_(this),
 114       weak_ptr_factory_(this) {
 115 }
 116
 117 GpuTileTaskWorkerPool::~GpuTileTaskWorkerPool() {
 118   DCHECK_EQ(0u, completed_tasks_.size());
 119 }
 120
 121 TileTaskRunner* GpuTileTaskWorkerPool::AsTileTaskRunner() {
 122   return this;
 123 }
 124
 125 void GpuTileTaskWorkerPool::SetClient(TileTaskRunnerClient* client) {
 126   client_ = client;
 127 }
 128
 129 void GpuTileTaskWorkerPool::Shutdown() {
 130   TRACE_EVENT0("cc", "GpuTileTaskWorkerPool::Shutdown");
 131
 132   TaskGraph empty;
 133   task_graph_runner_->ScheduleTasks(namespace_token_, &empty);
 134   task_graph_runner_->WaitForTasksToFinishRunning(namespace_token_);
 135 }
 136
 137 void GpuTileTaskWorkerPool::ScheduleTasks(TileTaskQueue* queue) {
 138   TRACE_EVENT0("cc", "GpuTileTaskWorkerPool::ScheduleTasks");
 139
 140   // Mark all task sets as pending.
 141   tasks_pending_.set();
 142
 143   size_t priority = kTileTaskPriorityBase;
 144
 145   graph_.Reset();
 146
 147   // Cancel existing OnTaskSetFinished callbacks.
 148   task_set_finished_weak_ptr_factory_.InvalidateWeakPtrs();
 149
 150   scoped_refptr<TileTask> new_task_set_finished_tasks[kNumberOfTaskSets];
 151
 152   size_t task_count[kNumberOfTaskSets] = {0};
 153
 154   for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set) {
 155     new_task_set_finished_tasks[task_set] = CreateTaskSetFinishedTask(
 156         task_runner_.get(),
 157         base::Bind(&GpuTileTaskWorkerPool::OnTaskSetFinished,
 158                    task_set_finished_weak_ptr_factory_.GetWeakPtr(), task_set));
 159   }
 160
 161   for (TileTaskQueue::Item::Vector::const_iterator it = queue->items.begin();
 162        it != queue->items.end(); ++it) {
 163     const TileTaskQueue::Item& item = *it;
 164     RasterTask* task = item.task;
 165     DCHECK(!task->HasCompleted());
 166
 167     for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set) {
 168       if (!item.task_sets[task_set])
 169         continue;
 170
 171       ++task_count[task_set];
 172
 173       graph_.edges.push_back(
 174           TaskGraph::Edge(task, new_task_set_finished_tasks[task_set].get()));
 175     }
 176
 177     InsertNodesForRasterTask(&graph_, task, task->dependencies(), priority++);
 178   }
 179
 180   for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set) {
 181     InsertNodeForTask(&graph_, new_task_set_finished_tasks[task_set].get(),
 182                       kTaskSetFinishedTaskPriorityBase + task_set,
 183                       task_count[task_set]);
 184   }
 185
 186   ScheduleTasksOnOriginThread(this, &graph_);
 187
 188   // Barrier to sync any new resources to the worker context.
 189   rasterizer_->resource_provider()
 190       ->output_surface()
 191       ->context_provider()
 192       ->ContextGL()
 193       ->OrderingBarrierCHROMIUM();
 194
 195   task_graph_runner_->ScheduleTasks(namespace_token_, &graph_);
 196
 197   std::copy(new_task_set_finished_tasks,
 198             new_task_set_finished_tasks + kNumberOfTaskSets,
 199             task_set_finished_tasks_);
 200 }
 201
 202 void GpuTileTaskWorkerPool::CheckForCompletedTasks() {
 203   TRACE_EVENT0("cc", "GpuTileTaskWorkerPool::CheckForCompletedTasks");
 204
 205   task_graph_runner_->CollectCompletedTasks(namespace_token_,
 206                                             &completed_tasks_);
 207   CompleteTasks(completed_tasks_);
 208   completed_tasks_.clear();
 209 }
 210
 211 ResourceFormat GpuTileTaskWorkerPool::GetResourceFormat() const {
 212   return rasterizer_->resource_provider()->best_render_buffer_format();
 213 }
 214
 215 bool GpuTileTaskWorkerPool::GetResourceRequiresSwizzle() const {
 216   // This doesn't require a swizzle because we rasterize to the correct format.
 217   return false;
 218 }
 219
 220 void GpuTileTaskWorkerPool::CompleteTasks(const Task::Vector& tasks) {
 221   for (auto& task : tasks) {
 222     TileTask* tile_task = static_cast<TileTask*>(task.get());
 223
 224     tile_task->WillComplete();
 225     tile_task->CompleteOnOriginThread(this);
 226     tile_task->DidComplete();
 227
 228     tile_task->RunReplyOnOriginThread();
 229   }
 230   completed_tasks_.clear();
 231 }
 232
 233 scoped_ptr<RasterBuffer> GpuTileTaskWorkerPool::AcquireBufferForRaster(
 234     const Resource* resource,
 235     uint64_t resource_content_id,
 236     uint64_t previous_content_id) {
 237   return scoped_ptr<RasterBuffer>(new RasterBufferImpl(
 238       rasterizer_.get(), resource, resource_content_id, previous_content_id));
 239 }
 240
 241 void GpuTileTaskWorkerPool::ReleaseBufferForRaster(
 242     scoped_ptr<RasterBuffer> buffer) {
 243   // Nothing to do here. RasterBufferImpl destructor cleans up after itself.
 244 }
 245
 246 void GpuTileTaskWorkerPool::OnTaskSetFinished(TaskSet task_set) {
 247   TRACE_EVENT1("cc", "GpuTileTaskWorkerPool::OnTaskSetFinished", "task_set",
 248                task_set);
 249
 250   DCHECK(tasks_pending_[task_set]);
 251   tasks_pending_[task_set] = false;
 252   client_->DidFinishRunningTileTasks(task_set);
 253 }
 254
 255 }  // namespace cc