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