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