| // Copyright 2011 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. |
| |
| #include "cc/trees/single_thread_proxy.h" |
| |
| #include "base/auto_reset.h" |
| #include "base/memory/ptr_util.h" |
| #include "base/trace_event/trace_event.h" |
| #include "cc/base/devtools_instrumentation.h" |
| #include "cc/benchmarks/benchmark_instrumentation.h" |
| #include "cc/resources/ui_resource_manager.h" |
| #include "cc/scheduler/commit_earlyout_reason.h" |
| #include "cc/scheduler/compositor_timing_history.h" |
| #include "cc/scheduler/scheduler.h" |
| #include "cc/trees/latency_info_swap_promise.h" |
| #include "cc/trees/layer_tree_frame_sink.h" |
| #include "cc/trees/layer_tree_host.h" |
| #include "cc/trees/layer_tree_host_common.h" |
| #include "cc/trees/layer_tree_host_single_thread_client.h" |
| #include "cc/trees/layer_tree_impl.h" |
| #include "cc/trees/mutator_host.h" |
| #include "cc/trees/render_frame_metadata_observer.h" |
| #include "cc/trees/scoped_abort_remaining_swap_promises.h" |
| #include "components/viz/common/frame_sinks/delay_based_time_source.h" |
| #include "components/viz/common/gpu/context_provider.h" |
| |
| namespace cc { |
| |
| std::unique_ptr<Proxy> SingleThreadProxy::Create( |
| LayerTreeHost* layer_tree_host, |
| LayerTreeHostSingleThreadClient* client, |
| TaskRunnerProvider* task_runner_provider) { |
| return base::WrapUnique( |
| new SingleThreadProxy(layer_tree_host, client, task_runner_provider)); |
| } |
| |
| SingleThreadProxy::SingleThreadProxy(LayerTreeHost* layer_tree_host, |
| LayerTreeHostSingleThreadClient* client, |
| TaskRunnerProvider* task_runner_provider) |
| : layer_tree_host_(layer_tree_host), |
| single_thread_client_(client), |
| task_runner_provider_(task_runner_provider), |
| next_frame_is_newly_committed_frame_(false), |
| #if DCHECK_IS_ON() |
| inside_impl_frame_(false), |
| #endif |
| inside_draw_(false), |
| defer_commits_(false), |
| animate_requested_(false), |
| commit_requested_(false), |
| inside_synchronous_composite_(false), |
| layer_tree_frame_sink_creation_requested_(false), |
| layer_tree_frame_sink_lost_(true), |
| frame_sink_bound_weak_factory_(this), |
| weak_factory_(this) { |
| TRACE_EVENT0("cc", "SingleThreadProxy::SingleThreadProxy"); |
| DCHECK(task_runner_provider_); |
| DCHECK(task_runner_provider_->IsMainThread()); |
| DCHECK(layer_tree_host); |
| } |
| |
| void SingleThreadProxy::Start() { |
| DebugScopedSetImplThread impl(task_runner_provider_); |
| |
| const LayerTreeSettings& settings = layer_tree_host_->GetSettings(); |
| DCHECK(settings.single_thread_proxy_scheduler || |
| !settings.enable_checker_imaging) |
| << "Checker-imaging is not supported in synchronous single threaded mode"; |
| if (settings.single_thread_proxy_scheduler && !scheduler_on_impl_thread_) { |
| SchedulerSettings scheduler_settings(settings.ToSchedulerSettings()); |
| scheduler_settings.commit_to_active_tree = CommitToActiveTree(); |
| |
| std::unique_ptr<CompositorTimingHistory> compositor_timing_history( |
| new CompositorTimingHistory( |
| scheduler_settings.using_synchronous_renderer_compositor, |
| CompositorTimingHistory::BROWSER_UMA, |
| layer_tree_host_->rendering_stats_instrumentation())); |
| scheduler_on_impl_thread_.reset( |
| new Scheduler(this, scheduler_settings, layer_tree_host_->GetId(), |
| task_runner_provider_->MainThreadTaskRunner(), |
| std::move(compositor_timing_history))); |
| } |
| |
| host_impl_ = layer_tree_host_->CreateLayerTreeHostImpl(this); |
| } |
| |
| SingleThreadProxy::~SingleThreadProxy() { |
| TRACE_EVENT0("cc", "SingleThreadProxy::~SingleThreadProxy"); |
| DCHECK(task_runner_provider_->IsMainThread()); |
| // Make sure Stop() got called or never Started. |
| DCHECK(!host_impl_); |
| } |
| |
| bool SingleThreadProxy::IsStarted() const { |
| DCHECK(task_runner_provider_->IsMainThread()); |
| return !!host_impl_; |
| } |
| |
| bool SingleThreadProxy::CommitToActiveTree() const { |
| // With SingleThreadProxy we skip the pending tree and commit directly to the |
| // active tree. |
| return true; |
| } |
| |
| void SingleThreadProxy::SetVisible(bool visible) { |
| TRACE_EVENT1("cc", "SingleThreadProxy::SetVisible", "visible", visible); |
| DebugScopedSetImplThread impl(task_runner_provider_); |
| |
| host_impl_->SetVisible(visible); |
| |
| if (scheduler_on_impl_thread_) |
| scheduler_on_impl_thread_->SetVisible(host_impl_->visible()); |
| } |
| |
| void SingleThreadProxy::RequestNewLayerTreeFrameSink() { |
| DCHECK(task_runner_provider_->IsMainThread()); |
| layer_tree_frame_sink_creation_callback_.Cancel(); |
| if (layer_tree_frame_sink_creation_requested_) |
| return; |
| layer_tree_frame_sink_creation_requested_ = true; |
| layer_tree_host_->RequestNewLayerTreeFrameSink(); |
| } |
| |
| void SingleThreadProxy::ReleaseLayerTreeFrameSink() { |
| layer_tree_frame_sink_lost_ = true; |
| frame_sink_bound_weak_factory_.InvalidateWeakPtrs(); |
| if (scheduler_on_impl_thread_) |
| scheduler_on_impl_thread_->DidLoseLayerTreeFrameSink(); |
| return host_impl_->ReleaseLayerTreeFrameSink(); |
| } |
| |
| void SingleThreadProxy::SetLayerTreeFrameSink( |
| LayerTreeFrameSink* layer_tree_frame_sink) { |
| DCHECK(task_runner_provider_->IsMainThread()); |
| DCHECK(layer_tree_frame_sink_creation_requested_); |
| |
| bool success; |
| { |
| DebugScopedSetMainThreadBlocked main_thread_blocked(task_runner_provider_); |
| DebugScopedSetImplThread impl(task_runner_provider_); |
| success = host_impl_->InitializeFrameSink(layer_tree_frame_sink); |
| } |
| |
| if (success) { |
| frame_sink_bound_weak_ptr_ = frame_sink_bound_weak_factory_.GetWeakPtr(); |
| layer_tree_host_->DidInitializeLayerTreeFrameSink(); |
| if (scheduler_on_impl_thread_) |
| scheduler_on_impl_thread_->DidCreateAndInitializeLayerTreeFrameSink(); |
| else if (!inside_synchronous_composite_) |
| SetNeedsCommit(); |
| layer_tree_frame_sink_creation_requested_ = false; |
| layer_tree_frame_sink_lost_ = false; |
| } else { |
| // DidFailToInitializeLayerTreeFrameSink is treated as a |
| // RequestNewLayerTreeFrameSink, and so |
| // layer_tree_frame_sink_creation_requested remains true. |
| layer_tree_host_->DidFailToInitializeLayerTreeFrameSink(); |
| } |
| } |
| |
| void SingleThreadProxy::SetNeedsAnimate() { |
| TRACE_EVENT0("cc", "SingleThreadProxy::SetNeedsAnimate"); |
| DCHECK(task_runner_provider_->IsMainThread()); |
| single_thread_client_->RequestScheduleAnimation(); |
| if (animate_requested_) |
| return; |
| animate_requested_ = true; |
| DebugScopedSetImplThread impl(task_runner_provider_); |
| if (scheduler_on_impl_thread_) |
| scheduler_on_impl_thread_->SetNeedsBeginMainFrame(); |
| } |
| |
| void SingleThreadProxy::SetNeedsUpdateLayers() { |
| TRACE_EVENT0("cc", "SingleThreadProxy::SetNeedsUpdateLayers"); |
| DCHECK(task_runner_provider_->IsMainThread()); |
| SetNeedsCommit(); |
| } |
| |
| void SingleThreadProxy::DoCommit() { |
| TRACE_EVENT0("cc", "SingleThreadProxy::DoCommit"); |
| DCHECK(task_runner_provider_->IsMainThread()); |
| |
| layer_tree_host_->WillCommit(); |
| devtools_instrumentation::ScopedCommitTrace commit_task( |
| layer_tree_host_->GetId()); |
| |
| // Commit immediately. |
| { |
| DebugScopedSetMainThreadBlocked main_thread_blocked(task_runner_provider_); |
| DebugScopedSetImplThread impl(task_runner_provider_); |
| |
| host_impl_->ReadyToCommit(); |
| host_impl_->BeginCommit(); |
| |
| if (host_impl_->EvictedUIResourcesExist()) |
| layer_tree_host_->GetUIResourceManager()->RecreateUIResources(); |
| |
| layer_tree_host_->FinishCommitOnImplThread(host_impl_.get()); |
| |
| if (scheduler_on_impl_thread_) |
| scheduler_on_impl_thread_->DidCommit(); |
| |
| IssueImageDecodeFinishedCallbacks(); |
| host_impl_->CommitComplete(); |
| |
| // Commit goes directly to the active tree, but we need to synchronously |
| // "activate" the tree still during commit to satisfy any potential |
| // SetNextCommitWaitsForActivation calls. Unfortunately, the tree |
| // might not be ready to draw, so DidActivateSyncTree must set |
| // the flag to force the tree to not draw until textures are ready. |
| NotifyReadyToActivate(); |
| } |
| } |
| |
| void SingleThreadProxy::IssueImageDecodeFinishedCallbacks() { |
| DCHECK(task_runner_provider_->IsImplThread()); |
| |
| layer_tree_host_->ImageDecodesFinished( |
| host_impl_->TakeCompletedImageDecodeRequests()); |
| } |
| |
| void SingleThreadProxy::CommitComplete() { |
| // Commit complete happens on the main side after activate to satisfy any |
| // SetNextCommitWaitsForActivation calls. |
| DCHECK(!host_impl_->pending_tree()) |
| << "Activation is expected to have synchronously occurred by now."; |
| |
| DebugScopedSetMainThread main(task_runner_provider_); |
| layer_tree_host_->CommitComplete(); |
| layer_tree_host_->DidBeginMainFrame(); |
| |
| next_frame_is_newly_committed_frame_ = true; |
| } |
| |
| void SingleThreadProxy::SetNeedsCommit() { |
| DCHECK(task_runner_provider_->IsMainThread()); |
| single_thread_client_->RequestScheduleComposite(); |
| if (commit_requested_) |
| return; |
| commit_requested_ = true; |
| DebugScopedSetImplThread impl(task_runner_provider_); |
| if (scheduler_on_impl_thread_) |
| scheduler_on_impl_thread_->SetNeedsBeginMainFrame(); |
| } |
| |
| void SingleThreadProxy::SetNeedsRedraw(const gfx::Rect& damage_rect) { |
| TRACE_EVENT0("cc", "SingleThreadProxy::SetNeedsRedraw"); |
| DCHECK(task_runner_provider_->IsMainThread()); |
| DebugScopedSetImplThread impl(task_runner_provider_); |
| host_impl_->SetViewportDamage(damage_rect); |
| SetNeedsRedrawOnImplThread(); |
| } |
| |
| void SingleThreadProxy::SetNextCommitWaitsForActivation() { |
| // Activation always forced in commit, so nothing to do. |
| DCHECK(task_runner_provider_->IsMainThread()); |
| } |
| |
| bool SingleThreadProxy::RequestedAnimatePending() { |
| return animate_requested_ || commit_requested_; |
| } |
| |
| void SingleThreadProxy::SetDeferCommits(bool defer_commits) { |
| DCHECK(task_runner_provider_->IsMainThread()); |
| // Deferring commits only makes sense if there's a scheduler. |
| if (!scheduler_on_impl_thread_) |
| return; |
| if (defer_commits_ == defer_commits) |
| return; |
| |
| if (defer_commits) |
| TRACE_EVENT_ASYNC_BEGIN0("cc", "SingleThreadProxy::SetDeferCommits", this); |
| else |
| TRACE_EVENT_ASYNC_END0("cc", "SingleThreadProxy::SetDeferCommits", this); |
| |
| defer_commits_ = defer_commits; |
| scheduler_on_impl_thread_->SetDeferCommits(defer_commits); |
| } |
| |
| bool SingleThreadProxy::CommitRequested() const { |
| DCHECK(task_runner_provider_->IsMainThread()); |
| return commit_requested_; |
| } |
| |
| void SingleThreadProxy::Stop() { |
| TRACE_EVENT0("cc", "SingleThreadProxy::stop"); |
| DCHECK(task_runner_provider_->IsMainThread()); |
| { |
| DebugScopedSetMainThreadBlocked main_thread_blocked(task_runner_provider_); |
| DebugScopedSetImplThread impl(task_runner_provider_); |
| |
| // Prevent the scheduler from performing actions while we're in an |
| // inconsistent state. |
| if (scheduler_on_impl_thread_) |
| scheduler_on_impl_thread_->Stop(); |
| // Take away the LayerTreeFrameSink before destroying things so it doesn't |
| // try to call into its client mid-shutdown. |
| host_impl_->ReleaseLayerTreeFrameSink(); |
| |
| // It is important to destroy LTHI before the Scheduler since it can make |
| // callbacks that access it during destruction cleanup. |
| host_impl_ = nullptr; |
| scheduler_on_impl_thread_ = nullptr; |
| } |
| layer_tree_host_ = nullptr; |
| } |
| |
| void SingleThreadProxy::SetMutator(std::unique_ptr<LayerTreeMutator> mutator) { |
| DCHECK(task_runner_provider_->IsMainThread()); |
| DebugScopedSetImplThread impl(task_runner_provider_); |
| host_impl_->SetLayerTreeMutator(std::move(mutator)); |
| } |
| |
| void SingleThreadProxy::OnCanDrawStateChanged(bool can_draw) { |
| TRACE_EVENT1("cc", "SingleThreadProxy::OnCanDrawStateChanged", "can_draw", |
| can_draw); |
| DCHECK(task_runner_provider_->IsImplThread()); |
| if (scheduler_on_impl_thread_) |
| scheduler_on_impl_thread_->SetCanDraw(can_draw); |
| } |
| |
| void SingleThreadProxy::NotifyReadyToActivate() { |
| TRACE_EVENT0("cc", "SingleThreadProxy::NotifyReadyToActivate"); |
| DebugScopedSetImplThread impl(task_runner_provider_); |
| if (scheduler_on_impl_thread_) |
| scheduler_on_impl_thread_->NotifyReadyToActivate(); |
| } |
| |
| void SingleThreadProxy::NotifyReadyToDraw() { |
| TRACE_EVENT0("cc", "SingleThreadProxy::NotifyReadyToDraw"); |
| DebugScopedSetImplThread impl(task_runner_provider_); |
| if (scheduler_on_impl_thread_) |
| scheduler_on_impl_thread_->NotifyReadyToDraw(); |
| } |
| |
| void SingleThreadProxy::SetNeedsRedrawOnImplThread() { |
| single_thread_client_->RequestScheduleComposite(); |
| if (scheduler_on_impl_thread_) |
| scheduler_on_impl_thread_->SetNeedsRedraw(); |
| } |
| |
| void SingleThreadProxy::SetNeedsOneBeginImplFrameOnImplThread() { |
| TRACE_EVENT0("cc", |
| "SingleThreadProxy::SetNeedsOneBeginImplFrameOnImplThread"); |
| single_thread_client_->RequestScheduleComposite(); |
| if (scheduler_on_impl_thread_) |
| scheduler_on_impl_thread_->SetNeedsOneBeginImplFrame(); |
| } |
| |
| void SingleThreadProxy::SetNeedsPrepareTilesOnImplThread() { |
| TRACE_EVENT0("cc", "SingleThreadProxy::SetNeedsPrepareTilesOnImplThread"); |
| if (scheduler_on_impl_thread_) |
| scheduler_on_impl_thread_->SetNeedsPrepareTiles(); |
| } |
| |
| void SingleThreadProxy::SetNeedsCommitOnImplThread() { |
| single_thread_client_->RequestScheduleComposite(); |
| if (scheduler_on_impl_thread_) |
| scheduler_on_impl_thread_->SetNeedsBeginMainFrame(); |
| } |
| |
| void SingleThreadProxy::SetVideoNeedsBeginFrames(bool needs_begin_frames) { |
| TRACE_EVENT1("cc", "SingleThreadProxy::SetVideoNeedsBeginFrames", |
| "needs_begin_frames", needs_begin_frames); |
| // In tests the layer tree is destroyed after the scheduler is. |
| if (scheduler_on_impl_thread_) |
| scheduler_on_impl_thread_->SetVideoNeedsBeginFrames(needs_begin_frames); |
| } |
| |
| void SingleThreadProxy::PostAnimationEventsToMainThreadOnImplThread( |
| std::unique_ptr<MutatorEvents> events) { |
| TRACE_EVENT0( |
| "cc", "SingleThreadProxy::PostAnimationEventsToMainThreadOnImplThread"); |
| DCHECK(task_runner_provider_->IsImplThread()); |
| DebugScopedSetMainThread main(task_runner_provider_); |
| layer_tree_host_->SetAnimationEvents(std::move(events)); |
| } |
| |
| size_t SingleThreadProxy::CompositedAnimationsCount() const { |
| return 0; |
| } |
| |
| size_t SingleThreadProxy::MainThreadAnimationsCount() const { |
| return 0; |
| } |
| |
| bool SingleThreadProxy::CurrentFrameHadRAF() const { |
| return false; |
| } |
| |
| bool SingleThreadProxy::NextFrameHasPendingRAF() const { |
| return false; |
| } |
| |
| bool SingleThreadProxy::IsInsideDraw() { |
| return inside_draw_; |
| } |
| |
| void SingleThreadProxy::DidActivateSyncTree() { |
| CommitComplete(); |
| } |
| |
| void SingleThreadProxy::WillPrepareTiles() { |
| DCHECK(task_runner_provider_->IsImplThread()); |
| if (scheduler_on_impl_thread_) |
| scheduler_on_impl_thread_->WillPrepareTiles(); |
| } |
| |
| void SingleThreadProxy::DidPrepareTiles() { |
| DCHECK(task_runner_provider_->IsImplThread()); |
| if (scheduler_on_impl_thread_) |
| scheduler_on_impl_thread_->DidPrepareTiles(); |
| } |
| |
| void SingleThreadProxy::DidCompletePageScaleAnimationOnImplThread() { |
| layer_tree_host_->DidCompletePageScaleAnimation(); |
| } |
| |
| void SingleThreadProxy::DidLoseLayerTreeFrameSinkOnImplThread() { |
| TRACE_EVENT0("cc", |
| "SingleThreadProxy::DidLoseLayerTreeFrameSinkOnImplThread"); |
| { |
| DebugScopedSetMainThread main(task_runner_provider_); |
| // This must happen before we notify the scheduler as it may try to recreate |
| // the output surface if already in BEGIN_IMPL_FRAME_STATE_IDLE. |
| layer_tree_host_->DidLoseLayerTreeFrameSink(); |
| } |
| single_thread_client_->DidLoseLayerTreeFrameSink(); |
| if (scheduler_on_impl_thread_) |
| scheduler_on_impl_thread_->DidLoseLayerTreeFrameSink(); |
| layer_tree_frame_sink_lost_ = true; |
| } |
| |
| void SingleThreadProxy::SetBeginFrameSource(viz::BeginFrameSource* source) { |
| if (scheduler_on_impl_thread_) |
| scheduler_on_impl_thread_->SetBeginFrameSource(source); |
| } |
| |
| void SingleThreadProxy::DidReceiveCompositorFrameAckOnImplThread() { |
| TRACE_EVENT0("cc,benchmark", |
| "SingleThreadProxy::DidReceiveCompositorFrameAckOnImplThread"); |
| if (scheduler_on_impl_thread_) |
| scheduler_on_impl_thread_->DidReceiveCompositorFrameAck(); |
| // We do a PostTask here because freeing resources in some cases (such as in |
| // TextureLayer) is PostTasked and we want to make sure ack is received after |
| // resources are returned. |
| task_runner_provider_->MainThreadTaskRunner()->PostTask( |
| FROM_HERE, base::Bind(&SingleThreadProxy::DidReceiveCompositorFrameAck, |
| frame_sink_bound_weak_ptr_)); |
| } |
| |
| void SingleThreadProxy::OnDrawForLayerTreeFrameSink( |
| bool resourceless_software_draw, |
| bool skip_draw) { |
| NOTREACHED() << "Implemented by ThreadProxy for synchronous compositor."; |
| } |
| |
| void SingleThreadProxy::NeedsImplSideInvalidation( |
| bool needs_first_draw_on_activation) { |
| if (scheduler_on_impl_thread_) { |
| scheduler_on_impl_thread_->SetNeedsImplSideInvalidation( |
| needs_first_draw_on_activation); |
| } |
| } |
| |
| void SingleThreadProxy::NotifyImageDecodeRequestFinished() { |
| // If we don't have a scheduler, then just issue the callbacks here. |
| // Otherwise, schedule a commit. |
| if (!scheduler_on_impl_thread_) { |
| DebugScopedSetMainThreadBlocked main_thread_blocked(task_runner_provider_); |
| DebugScopedSetImplThread impl(task_runner_provider_); |
| |
| IssueImageDecodeFinishedCallbacks(); |
| return; |
| } |
| SetNeedsCommitOnImplThread(); |
| } |
| |
| void SingleThreadProxy::DidPresentCompositorFrameOnImplThread( |
| uint32_t frame_token, |
| std::vector<LayerTreeHost::PresentationTimeCallback> callbacks, |
| const gfx::PresentationFeedback& feedback) { |
| layer_tree_host_->DidPresentCompositorFrame(frame_token, std::move(callbacks), |
| feedback); |
| } |
| |
| void SingleThreadProxy::RequestBeginMainFrameNotExpected(bool new_state) { |
| if (scheduler_on_impl_thread_) { |
| scheduler_on_impl_thread_->SetMainThreadWantsBeginMainFrameNotExpected( |
| new_state); |
| } |
| } |
| |
| void SingleThreadProxy::CompositeImmediately(base::TimeTicks frame_begin_time, |
| bool raster) { |
| TRACE_EVENT0("cc,benchmark", "SingleThreadProxy::CompositeImmediately"); |
| DCHECK(task_runner_provider_->IsMainThread()); |
| #if DCHECK_IS_ON() |
| DCHECK(!inside_impl_frame_); |
| #endif |
| base::AutoReset<bool> inside_composite(&inside_synchronous_composite_, true); |
| |
| if (layer_tree_frame_sink_lost_) { |
| RequestNewLayerTreeFrameSink(); |
| // RequestNewLayerTreeFrameSink could have synchronously created an output |
| // surface, so check again before returning. |
| if (layer_tree_frame_sink_lost_) |
| return; |
| } |
| |
| viz::BeginFrameArgs begin_frame_args(viz::BeginFrameArgs::Create( |
| BEGINFRAME_FROM_HERE, viz::BeginFrameArgs::kManualSourceId, 1, |
| frame_begin_time, base::TimeTicks(), |
| viz::BeginFrameArgs::DefaultInterval(), viz::BeginFrameArgs::NORMAL)); |
| |
| // Start the impl frame. |
| { |
| DebugScopedSetImplThread impl(task_runner_provider_); |
| WillBeginImplFrame(begin_frame_args); |
| } |
| |
| // Run the "main thread" and get it to commit. |
| { |
| #if DCHECK_IS_ON() |
| DCHECK(inside_impl_frame_); |
| #endif |
| animate_requested_ = false; |
| // Prevent new commits from being requested inside DoBeginMainFrame. |
| // Note: We do not want to prevent SetNeedsAnimate from requesting |
| // a commit here. |
| commit_requested_ = true; |
| DoBeginMainFrame(begin_frame_args); |
| commit_requested_ = false; |
| DoPainting(); |
| DoCommit(); |
| |
| DCHECK_EQ( |
| 0u, |
| layer_tree_host_->GetSwapPromiseManager()->num_queued_swap_promises()) |
| << "Commit should always succeed and transfer promises."; |
| } |
| |
| // Finish the impl frame. |
| { |
| DebugScopedSetImplThread impl(task_runner_provider_); |
| host_impl_->ActivateSyncTree(); |
| if (raster) { |
| host_impl_->PrepareTiles(); |
| host_impl_->SynchronouslyInitializeAllTiles(); |
| } |
| |
| // TODO(danakj): Don't do this last... we prepared the wrong things. D: |
| host_impl_->Animate(); |
| |
| if (raster) { |
| LayerTreeHostImpl::FrameData frame; |
| frame.begin_frame_ack = viz::BeginFrameAck(begin_frame_args, true); |
| DoComposite(&frame); |
| } |
| |
| // DoComposite could abort, but because this is a synchronous composite |
| // another draw will never be scheduled, so break remaining promises. |
| host_impl_->active_tree()->BreakSwapPromises(SwapPromise::SWAP_FAILS); |
| |
| DidFinishImplFrame(); |
| } |
| } |
| |
| bool SingleThreadProxy::SupportsImplScrolling() const { |
| return false; |
| } |
| |
| bool SingleThreadProxy::ShouldComposite() const { |
| DCHECK(task_runner_provider_->IsImplThread()); |
| return host_impl_->visible() && host_impl_->CanDraw(); |
| } |
| |
| void SingleThreadProxy::ScheduleRequestNewLayerTreeFrameSink() { |
| if (layer_tree_frame_sink_creation_callback_.IsCancelled() && |
| !layer_tree_frame_sink_creation_requested_) { |
| layer_tree_frame_sink_creation_callback_.Reset( |
| base::Bind(&SingleThreadProxy::RequestNewLayerTreeFrameSink, |
| weak_factory_.GetWeakPtr())); |
| task_runner_provider_->MainThreadTaskRunner()->PostTask( |
| FROM_HERE, layer_tree_frame_sink_creation_callback_.callback()); |
| } |
| } |
| |
| DrawResult SingleThreadProxy::DoComposite(LayerTreeHostImpl::FrameData* frame) { |
| TRACE_EVENT0("cc", "SingleThreadProxy::DoComposite"); |
| |
| DrawResult draw_result; |
| bool draw_frame; |
| { |
| DebugScopedSetImplThread impl(task_runner_provider_); |
| base::AutoReset<bool> mark_inside(&inside_draw_, true); |
| |
| // We guard PrepareToDraw() with CanDraw() because it always returns a valid |
| // frame, so can only be used when such a frame is possible. Since |
| // DrawLayers() depends on the result of PrepareToDraw(), it is guarded on |
| // CanDraw() as well. |
| if (!ShouldComposite()) { |
| return DRAW_ABORTED_CANT_DRAW; |
| } |
| |
| // This CapturePostTasks should be destroyed before |
| // DidCommitAndDrawFrame() is called since that goes out to the |
| // embedder, and we want the embedder to receive its callbacks before that. |
| // NOTE: This maintains consistent ordering with the ThreadProxy since |
| // the DidCommitAndDrawFrame() must be post-tasked from the impl thread |
| // there as the main thread is not blocked, so any posted tasks inside |
| // the swap buffers will execute first. |
| DebugScopedSetMainThreadBlocked main_thread_blocked(task_runner_provider_); |
| |
| draw_result = host_impl_->PrepareToDraw(frame); |
| draw_frame = draw_result == DRAW_SUCCESS; |
| if (draw_frame) { |
| if (host_impl_->DrawLayers(frame)) { |
| if (scheduler_on_impl_thread_) |
| // Drawing implies we submitted a frame to the LayerTreeFrameSink. |
| scheduler_on_impl_thread_->DidSubmitCompositorFrame(); |
| single_thread_client_->DidSubmitCompositorFrame(); |
| } |
| } |
| host_impl_->DidDrawAllLayers(*frame); |
| |
| bool start_ready_animations = draw_frame; |
| host_impl_->UpdateAnimationState(start_ready_animations); |
| } |
| DidCommitAndDrawFrame(); |
| |
| return draw_result; |
| } |
| |
| void SingleThreadProxy::DidCommitAndDrawFrame() { |
| if (next_frame_is_newly_committed_frame_) { |
| DebugScopedSetMainThread main(task_runner_provider_); |
| next_frame_is_newly_committed_frame_ = false; |
| layer_tree_host_->DidCommitAndDrawFrame(); |
| } |
| } |
| |
| bool SingleThreadProxy::MainFrameWillHappenForTesting() { |
| if (!scheduler_on_impl_thread_) |
| return false; |
| return scheduler_on_impl_thread_->MainFrameForTestingWillHappen(); |
| } |
| |
| void SingleThreadProxy::ClearHistory() { |
| DCHECK(task_runner_provider_->IsImplThread()); |
| if (scheduler_on_impl_thread_) |
| scheduler_on_impl_thread_->ClearHistory(); |
| } |
| |
| void SingleThreadProxy::SetRenderFrameObserver( |
| std::unique_ptr<RenderFrameMetadataObserver> observer) { |
| host_impl_->SetRenderFrameObserver(std::move(observer)); |
| } |
| |
| bool SingleThreadProxy::WillBeginImplFrame(const viz::BeginFrameArgs& args) { |
| DebugScopedSetImplThread impl(task_runner_provider_); |
| #if DCHECK_IS_ON() |
| DCHECK(!inside_impl_frame_) |
| << "WillBeginImplFrame called while already inside an impl frame!"; |
| inside_impl_frame_ = true; |
| #endif |
| return host_impl_->WillBeginImplFrame(args); |
| } |
| |
| void SingleThreadProxy::ScheduledActionSendBeginMainFrame( |
| const viz::BeginFrameArgs& begin_frame_args) { |
| TRACE_EVENT0("cc", "SingleThreadProxy::ScheduledActionSendBeginMainFrame"); |
| #if DCHECK_IS_ON() |
| // Although this proxy is single-threaded, it's problematic to synchronously |
| // have BeginMainFrame happen after ScheduledActionSendBeginMainFrame. This |
| // could cause a commit to occur in between a series of SetNeedsCommit calls |
| // (i.e. property modifications) causing some to fall on one frame and some to |
| // fall on the next. Doing it asynchronously instead matches the semantics of |
| // ThreadProxy::SetNeedsCommit where SetNeedsCommit will not cause a |
| // synchronous commit. |
| DCHECK(inside_impl_frame_) |
| << "BeginMainFrame should only be sent inside a BeginImplFrame"; |
| #endif |
| |
| task_runner_provider_->MainThreadTaskRunner()->PostTask( |
| FROM_HERE, base::BindOnce(&SingleThreadProxy::BeginMainFrame, |
| weak_factory_.GetWeakPtr(), begin_frame_args)); |
| host_impl_->DidSendBeginMainFrame(); |
| } |
| |
| void SingleThreadProxy::SendBeginMainFrameNotExpectedSoon() { |
| layer_tree_host_->BeginMainFrameNotExpectedSoon(); |
| } |
| |
| void SingleThreadProxy::ScheduledActionBeginMainFrameNotExpectedUntil( |
| base::TimeTicks time) { |
| layer_tree_host_->BeginMainFrameNotExpectedUntil(time); |
| } |
| |
| void SingleThreadProxy::BeginMainFrame( |
| const viz::BeginFrameArgs& begin_frame_args) { |
| // This checker assumes NotifyReadyToCommit in this stack causes a synchronous |
| // commit. |
| ScopedAbortRemainingSwapPromises swap_promise_checker( |
| layer_tree_host_->GetSwapPromiseManager()); |
| |
| if (scheduler_on_impl_thread_) { |
| scheduler_on_impl_thread_->NotifyBeginMainFrameStarted( |
| base::TimeTicks::Now()); |
| } |
| |
| commit_requested_ = false; |
| animate_requested_ = false; |
| |
| if (defer_commits_) { |
| TRACE_EVENT_INSTANT0("cc", "EarlyOut_DeferCommit", |
| TRACE_EVENT_SCOPE_THREAD); |
| BeginMainFrameAbortedOnImplThread( |
| CommitEarlyOutReason::ABORTED_DEFERRED_COMMIT); |
| return; |
| } |
| |
| if (!layer_tree_host_->IsVisible()) { |
| TRACE_EVENT_INSTANT0("cc", "EarlyOut_NotVisible", TRACE_EVENT_SCOPE_THREAD); |
| BeginMainFrameAbortedOnImplThread( |
| CommitEarlyOutReason::ABORTED_NOT_VISIBLE); |
| return; |
| } |
| |
| // Prevent new commits from being requested inside DoBeginMainFrame. |
| // Note: We do not want to prevent SetNeedsAnimate from requesting |
| // a commit here. |
| commit_requested_ = true; |
| |
| DoBeginMainFrame(begin_frame_args); |
| |
| // New commits requested inside UpdateLayers should be respected. |
| commit_requested_ = false; |
| |
| // At this point the main frame may have deferred commits to avoid committing |
| // right now. |
| if (defer_commits_ || begin_frame_args.animate_only) { |
| TRACE_EVENT_INSTANT0("cc", "EarlyOut_DeferCommit_InsideBeginMainFrame", |
| TRACE_EVENT_SCOPE_THREAD); |
| BeginMainFrameAbortedOnImplThread( |
| CommitEarlyOutReason::ABORTED_DEFERRED_COMMIT); |
| layer_tree_host_->DidBeginMainFrame(); |
| return; |
| } |
| |
| // Queue the LATENCY_BEGIN_FRAME_UI_MAIN_COMPONENT swap promise only once we |
| // know we will commit since QueueSwapPromise itself requests a commit. |
| ui::LatencyInfo new_latency_info(ui::SourceEventType::FRAME); |
| new_latency_info.AddLatencyNumberWithTimestamp( |
| ui::LATENCY_BEGIN_FRAME_UI_MAIN_COMPONENT, begin_frame_args.frame_time, |
| 1); |
| layer_tree_host_->QueueSwapPromise( |
| std::make_unique<LatencyInfoSwapPromise>(new_latency_info)); |
| |
| DoPainting(); |
| } |
| |
| void SingleThreadProxy::DoBeginMainFrame( |
| const viz::BeginFrameArgs& begin_frame_args) { |
| // The impl-side scroll deltas may be manipulated directly via the |
| // InputHandler on the UI thread and the scale deltas may change when they are |
| // clamped on the impl thread. |
| std::unique_ptr<ScrollAndScaleSet> scroll_info = |
| host_impl_->ProcessScrollDeltas(); |
| layer_tree_host_->ApplyScrollAndScale(scroll_info.get()); |
| |
| layer_tree_host_->WillBeginMainFrame(); |
| layer_tree_host_->BeginMainFrame(begin_frame_args); |
| layer_tree_host_->AnimateLayers(begin_frame_args.frame_time); |
| layer_tree_host_->RequestMainFrameUpdate( |
| begin_frame_args.animate_only |
| ? LayerTreeHost::VisualStateUpdate::kPrePaint |
| : LayerTreeHost::VisualStateUpdate::kAll); |
| } |
| |
| void SingleThreadProxy::DoPainting() { |
| layer_tree_host_->UpdateLayers(); |
| |
| // TODO(enne): SingleThreadProxy does not support cancelling commits yet, |
| // search for CommitEarlyOutReason::FINISHED_NO_UPDATES inside |
| // thread_proxy.cc |
| if (scheduler_on_impl_thread_) |
| scheduler_on_impl_thread_->NotifyReadyToCommit(); |
| } |
| |
| void SingleThreadProxy::BeginMainFrameAbortedOnImplThread( |
| CommitEarlyOutReason reason) { |
| DebugScopedSetImplThread impl(task_runner_provider_); |
| DCHECK(scheduler_on_impl_thread_->CommitPending()); |
| DCHECK(!host_impl_->pending_tree()); |
| |
| std::vector<std::unique_ptr<SwapPromise>> empty_swap_promises; |
| host_impl_->BeginMainFrameAborted(reason, std::move(empty_swap_promises)); |
| scheduler_on_impl_thread_->BeginMainFrameAborted(reason); |
| } |
| |
| DrawResult SingleThreadProxy::ScheduledActionDrawIfPossible() { |
| DebugScopedSetImplThread impl(task_runner_provider_); |
| LayerTreeHostImpl::FrameData frame; |
| frame.begin_frame_ack = |
| scheduler_on_impl_thread_->CurrentBeginFrameAckForActiveTree(); |
| return DoComposite(&frame); |
| } |
| |
| DrawResult SingleThreadProxy::ScheduledActionDrawForced() { |
| NOTREACHED(); |
| return INVALID_RESULT; |
| } |
| |
| void SingleThreadProxy::ScheduledActionCommit() { |
| DebugScopedSetMainThread main(task_runner_provider_); |
| DoCommit(); |
| } |
| |
| void SingleThreadProxy::ScheduledActionActivateSyncTree() { |
| DebugScopedSetImplThread impl(task_runner_provider_); |
| host_impl_->ActivateSyncTree(); |
| } |
| |
| void SingleThreadProxy::ScheduledActionBeginLayerTreeFrameSinkCreation() { |
| DebugScopedSetMainThread main(task_runner_provider_); |
| DCHECK(scheduler_on_impl_thread_); |
| // If possible, create the output surface in a post task. Synchronously |
| // creating the output surface makes tests more awkward since this differs |
| // from the ThreadProxy behavior. However, sometimes there is no |
| // task runner. |
| if (task_runner_provider_->MainThreadTaskRunner()) { |
| ScheduleRequestNewLayerTreeFrameSink(); |
| } else { |
| RequestNewLayerTreeFrameSink(); |
| } |
| } |
| |
| void SingleThreadProxy::ScheduledActionPrepareTiles() { |
| TRACE_EVENT0("cc", "SingleThreadProxy::ScheduledActionPrepareTiles"); |
| DebugScopedSetImplThread impl(task_runner_provider_); |
| host_impl_->PrepareTiles(); |
| } |
| |
| void SingleThreadProxy::ScheduledActionInvalidateLayerTreeFrameSink( |
| bool needs_redraw) { |
| // This is an Android WebView codepath, which only uses multi-thread |
| // compositor. So this should not occur in single-thread mode. |
| NOTREACHED() << "Android Webview use-case, so multi-thread only"; |
| } |
| |
| void SingleThreadProxy::ScheduledActionPerformImplSideInvalidation() { |
| DCHECK(scheduler_on_impl_thread_); |
| |
| DebugScopedSetImplThread impl(task_runner_provider_); |
| host_impl_->InvalidateContentOnImplSide(); |
| |
| // Invalidations go directly to the active tree, so we synchronously call |
| // NotifyReadyToActivate to update the scheduler and LTHI state correctly. |
| // Since in single-threaded mode the scheduler will wait for a ready to draw |
| // signal from LTHI, the draw will remain blocked till the invalidated tiles |
| // are ready. |
| NotifyReadyToActivate(); |
| } |
| |
| void SingleThreadProxy::DidFinishImplFrame() { |
| host_impl_->DidFinishImplFrame(); |
| #if DCHECK_IS_ON() |
| DCHECK(inside_impl_frame_) |
| << "DidFinishImplFrame called while not inside an impl frame!"; |
| inside_impl_frame_ = false; |
| #endif |
| } |
| |
| void SingleThreadProxy::DidNotProduceFrame(const viz::BeginFrameAck& ack) { |
| DebugScopedSetImplThread impl(task_runner_provider_); |
| host_impl_->DidNotProduceFrame(ack); |
| } |
| |
| void SingleThreadProxy::DidReceiveCompositorFrameAck() { |
| layer_tree_host_->DidReceiveCompositorFrameAck(); |
| } |
| |
| } // namespace cc |