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chromium / chromium / src / 92f924a59d72748e339fe79bdb223d87b1cdfad6 / . / cc / trees / layer_tree_host.cc
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// 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/layer_tree_host.h"
#include <stddef.h>
#include <stdint.h>
#include <algorithm>
#include <memory>
#include <string>
#include <unordered_map>
#include "base/atomic_sequence_num.h"
#include "base/auto_reset.h"
#include "base/bind.h"
#include "base/command_line.h"
#include "base/json/json_writer.h"
#include "base/location.h"
#include "base/metrics/histogram_functions.h"
#include "base/metrics/histogram_macros.h"
#include "base/numerics/safe_math.h"
#include "base/single_thread_task_runner.h"
#include "base/stl_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/stringprintf.h"
#include "base/threading/thread_task_runner_handle.h"
#include "base/timer/elapsed_timer.h"
#include "base/trace_event/trace_event.h"
#include "base/trace_event/trace_event_argument.h"
#include "build/build_config.h"
#include "cc/base/devtools_instrumentation.h"
#include "cc/base/histograms.h"
#include "cc/base/math_util.h"
#include "cc/debug/rendering_stats_instrumentation.h"
#include "cc/input/layer_selection_bound.h"
#include "cc/input/overscroll_behavior.h"
#include "cc/input/page_scale_animation.h"
#include "cc/layers/heads_up_display_layer.h"
#include "cc/layers/heads_up_display_layer_impl.h"
#include "cc/layers/layer.h"
#include "cc/layers/painted_scrollbar_layer.h"
#include "cc/resources/ui_resource_manager.h"
#include "cc/tiles/frame_viewer_instrumentation.h"
#include "cc/trees/clip_node.h"
#include "cc/trees/draw_property_utils.h"
#include "cc/trees/effect_node.h"
#include "cc/trees/layer_tree_host_client.h"
#include "cc/trees/layer_tree_host_common.h"
#include "cc/trees/layer_tree_host_impl.h"
#include "cc/trees/mutator_host.h"
#include "cc/trees/property_tree_builder.h"
#include "cc/trees/proxy_main.h"
#include "cc/trees/render_frame_metadata_observer.h"
#include "cc/trees/scroll_node.h"
#include "cc/trees/single_thread_proxy.h"
#include "cc/trees/swap_promise_manager.h"
#include "cc/trees/transform_node.h"
#include "cc/trees/tree_synchronizer.h"
#include "cc/trees/ukm_manager.h"
#include "services/metrics/public/cpp/ukm_recorder.h"
#include "ui/gfx/geometry/size_conversions.h"
#include "ui/gfx/geometry/vector2d_conversions.h"
#include "ui/gfx/presentation_feedback.h"
namespace {
static base::AtomicSequenceNumber s_layer_tree_host_sequence_number;
static base::AtomicSequenceNumber s_image_decode_sequence_number;
}
namespace cc {
LayerTreeHost::InitParams::InitParams() = default;
LayerTreeHost::InitParams::~InitParams() = default;
LayerTreeHost::InitParams::InitParams(InitParams&&) = default;
LayerTreeHost::InitParams& LayerTreeHost::InitParams::operator=(InitParams&&) =
default;
std::unique_ptr<LayerTreeHost> LayerTreeHost::CreateThreaded(
scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner,
InitParams params) {
DCHECK(params.settings);
scoped_refptr<base::SingleThreadTaskRunner> main_task_runner =
params.main_task_runner;
DCHECK(main_task_runner);
DCHECK(impl_task_runner);
auto layer_tree_host = base::WrapUnique(
new LayerTreeHost(std::move(params), CompositorMode::THREADED));
layer_tree_host->InitializeThreaded(std::move(main_task_runner),
std::move(impl_task_runner));
return layer_tree_host;
}
std::unique_ptr<LayerTreeHost> LayerTreeHost::CreateSingleThreaded(
LayerTreeHostSingleThreadClient* single_thread_client,
InitParams params) {
DCHECK(params.settings);
scoped_refptr<base::SingleThreadTaskRunner> main_task_runner =
params.main_task_runner;
auto layer_tree_host = base::WrapUnique(
new LayerTreeHost(std::move(params), CompositorMode::SINGLE_THREADED));
layer_tree_host->InitializeSingleThreaded(single_thread_client,
std::move(main_task_runner));
return layer_tree_host;
}
LayerTreeHost::LayerTreeHost(InitParams params, CompositorMode mode)
: micro_benchmark_controller_(this),
image_worker_task_runner_(std::move(params.image_worker_task_runner)),
ukm_recorder_factory_(std::move(params.ukm_recorder_factory)),
compositor_mode_(mode),
ui_resource_manager_(std::make_unique<UIResourceManager>()),
client_(params.client),
rendering_stats_instrumentation_(RenderingStatsInstrumentation::Create()),
settings_(*params.settings),
debug_state_(settings_.initial_debug_state),
id_(s_layer_tree_host_sequence_number.GetNext() + 1),
task_graph_runner_(params.task_graph_runner),
content_source_id_(0),
event_listener_properties_(),
mutator_host_(params.mutator_host),
defer_commits_weak_ptr_factory_(this) {
DCHECK(task_graph_runner_);
DCHECK(!settings_.enable_checker_imaging || image_worker_task_runner_);
mutator_host_->SetMutatorHostClient(this);
rendering_stats_instrumentation_->set_record_rendering_stats(
debug_state_.RecordRenderingStats());
}
void LayerTreeHost::InitializeThreaded(
scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner) {
task_runner_provider_ =
TaskRunnerProvider::Create(main_task_runner, impl_task_runner);
std::unique_ptr<ProxyMain> proxy_main =
std::make_unique<ProxyMain>(this, task_runner_provider_.get());
InitializeProxy(std::move(proxy_main));
}
void LayerTreeHost::InitializeSingleThreaded(
LayerTreeHostSingleThreadClient* single_thread_client,
scoped_refptr<base::SingleThreadTaskRunner> main_task_runner) {
task_runner_provider_ = TaskRunnerProvider::Create(main_task_runner, nullptr);
InitializeProxy(SingleThreadProxy::Create(this, single_thread_client,
task_runner_provider_.get()));
}
void LayerTreeHost::InitializeForTesting(
std::unique_ptr<TaskRunnerProvider> task_runner_provider,
std::unique_ptr<Proxy> proxy_for_testing) {
task_runner_provider_ = std::move(task_runner_provider);
InitializeProxy(std::move(proxy_for_testing));
}
void LayerTreeHost::SetTaskRunnerProviderForTesting(
std::unique_ptr<TaskRunnerProvider> task_runner_provider) {
DCHECK(!task_runner_provider_);
task_runner_provider_ = std::move(task_runner_provider);
}
void LayerTreeHost::SetUIResourceManagerForTesting(
std::unique_ptr<UIResourceManager> ui_resource_manager) {
ui_resource_manager_ = std::move(ui_resource_manager);
}
void LayerTreeHost::InitializeProxy(std::unique_ptr<Proxy> proxy) {
TRACE_EVENT0("cc", "LayerTreeHost::InitializeForReal");
DCHECK(task_runner_provider_);
proxy_ = std::move(proxy);
proxy_->Start();
UpdateDeferCommitsInternal();
mutator_host_->SetSupportsScrollAnimations(proxy_->SupportsImplScrolling());
}
LayerTreeHost::~LayerTreeHost() {
// Track when we're inside a main frame to see if compositor is being
// destroyed midway which causes a crash. crbug.com/654672
DCHECK(!inside_main_frame_);
TRACE_EVENT0("cc", "LayerTreeHost::~LayerTreeHost");
// Clear any references into the LayerTreeHost.
mutator_host_->SetMutatorHostClient(nullptr);
// We must clear any pointers into the layer tree prior to destroying it.
RegisterViewportLayers(ViewportLayers());
if (root_layer_) {
root_layer_->SetLayerTreeHost(nullptr);
// The root layer must be destroyed before the layer tree. We've made a
// contract with our animation controllers that the animation_host will
// outlive them, and we must make good.
root_layer_ = nullptr;
}
// Fail any pending image decodes.
for (auto& pair : pending_image_decodes_)
std::move(pair.second).Run(false);
if (proxy_) {
DCHECK(task_runner_provider_->IsMainThread());
proxy_->Stop();
// Proxy must be destroyed before the Task Runner Provider.
proxy_ = nullptr;
}
}
int LayerTreeHost::GetId() const {
return id_;
}
int LayerTreeHost::SourceFrameNumber() const {
return source_frame_number_;
}
UIResourceManager* LayerTreeHost::GetUIResourceManager() const {
return ui_resource_manager_.get();
}
TaskRunnerProvider* LayerTreeHost::GetTaskRunnerProvider() const {
return task_runner_provider_.get();
}
SwapPromiseManager* LayerTreeHost::GetSwapPromiseManager() {
return &swap_promise_manager_;
}
const LayerTreeSettings& LayerTreeHost::GetSettings() const {
return settings_;
}
void LayerTreeHost::QueueSwapPromise(
std::unique_ptr<SwapPromise> swap_promise) {
swap_promise_manager_.QueueSwapPromise(std::move(swap_promise));
// Request a main frame if one is not already in progress. This might either
// A) request a commit ahead of time or B) request a commit which is not
// needed because there are not pending updates. If B) then the frame will
// be aborted early and the swap promises will be broken (see
// EarlyOut_NoUpdates).
if (!inside_main_frame_)
SetNeedsAnimate();
}
void LayerTreeHost::WillBeginMainFrame() {
inside_main_frame_ = true;
devtools_instrumentation::WillBeginMainThreadFrame(GetId(),
SourceFrameNumber());
client_->WillBeginMainFrame();
}
void LayerTreeHost::DidBeginMainFrame() {
inside_main_frame_ = false;
client_->DidBeginMainFrame();
}
void LayerTreeHost::BeginMainFrameNotExpectedSoon() {
client_->BeginMainFrameNotExpectedSoon();
}
void LayerTreeHost::BeginMainFrameNotExpectedUntil(base::TimeTicks time) {
client_->BeginMainFrameNotExpectedUntil(time);
}
void LayerTreeHost::BeginMainFrame(const viz::BeginFrameArgs& args) {
client_->BeginMainFrame(args);
}
const LayerTreeDebugState& LayerTreeHost::GetDebugState() const {
return debug_state_;
}
void LayerTreeHost::RequestMainFrameUpdate() {
client_->UpdateLayerTreeHost();
}
// This function commits the LayerTreeHost to an impl tree. When modifying
// this function, keep in mind that the function *runs* on the impl thread! Any
// code that is logically a main thread operation, e.g. deletion of a Layer,
// should be delayed until the LayerTreeHost::CommitComplete, which will run
// after the commit, but on the main thread.
void LayerTreeHost::FinishCommitOnImplThread(
LayerTreeHostImpl* host_impl) {
DCHECK(task_runner_provider_->IsImplThread());
TRACE_EVENT0("cc,benchmark", "LayerTreeHost::FinishCommitOnImplThread");
LayerTreeImpl* sync_tree = host_impl->sync_tree();
sync_tree->lifecycle().AdvanceTo(LayerTreeLifecycle::kBeginningSync);
if (next_commit_forces_redraw_) {
sync_tree->ForceRedrawNextActivation();
next_commit_forces_redraw_ = false;
}
if (next_commit_forces_recalculate_raster_scales_) {
sync_tree->ForceRecalculateRasterScales();
next_commit_forces_recalculate_raster_scales_ = false;
}
sync_tree->set_source_frame_number(SourceFrameNumber());
bool request_presentation_time =
settings_.always_request_presentation_time ||
!pending_presentation_time_callbacks_.empty();
if (request_presentation_time && pending_presentation_time_callbacks_.empty())
pending_presentation_time_callbacks_.push_back(base::DoNothing());
sync_tree->AddPresentationCallbacks(
std::move(pending_presentation_time_callbacks_));
if (needs_full_tree_sync_)
TreeSynchronizer::SynchronizeTrees(root_layer(), sync_tree);
if (clear_caches_on_next_commit_) {
clear_caches_on_next_commit_ = false;
proxy_->ClearHistory();
host_impl->ClearCaches();
}
{
TRACE_EVENT0("cc", "LayerTreeHost::PushProperties");
PushPropertyTreesTo(sync_tree);
sync_tree->lifecycle().AdvanceTo(LayerTreeLifecycle::kSyncedPropertyTrees);
PushSurfaceRangesTo(sync_tree);
TreeSynchronizer::PushLayerProperties(this, sync_tree);
sync_tree->lifecycle().AdvanceTo(
LayerTreeLifecycle::kSyncedLayerProperties);
PushLayerTreePropertiesTo(sync_tree);
PushLayerTreeHostPropertiesTo(host_impl);
sync_tree->PassSwapPromises(swap_promise_manager_.TakeSwapPromises());
sync_tree->set_ui_resource_request_queue(
ui_resource_manager_->TakeUIResourcesRequests());
// This must happen after synchronizing property trees and after pushing
// properties, which updates the clobber_active_value flag.
// TODO(pdr): Enforce this comment with DCHECKS and a lifecycle state.
sync_tree->property_trees()->scroll_tree.PushScrollUpdatesFromMainThread(
property_trees(), sync_tree);
// This must happen after synchronizing property trees and after push
// properties, which updates property tree indices, but before animation
// host pushes properties as animation host push properties can change
// KeyframeModel::InEffect and we want the old InEffect value for updating
// property tree scrolling and animation.
// TODO(pdr): Enforce this comment with DCHECKS and a lifecycle state.
sync_tree->UpdatePropertyTreeAnimationFromMainThread();
TRACE_EVENT0("cc", "LayerTreeHost::AnimationHost::PushProperties");
DCHECK(host_impl->mutator_host());
mutator_host_->PushPropertiesTo(host_impl->mutator_host());
sync_tree->lifecycle().AdvanceTo(LayerTreeLifecycle::kNotSyncing);
}
// Transfer image decode requests to the impl thread.
for (auto& request : queued_image_decodes_) {
int next_id = s_image_decode_sequence_number.GetNext();
pending_image_decodes_[next_id] = std::move(request.second);
host_impl->QueueImageDecode(next_id, std::move(request.first));
}
queued_image_decodes_.clear();
micro_benchmark_controller_.ScheduleImplBenchmarks(host_impl);
property_trees_.ResetAllChangeTracking();
// Dump property trees and layers if run with:
// --vmodule=layer_tree_host=3
if (VLOG_IS_ON(3)) {
std::string property_trees;
base::JSONWriter::WriteWithOptions(
*sync_tree->property_trees()->AsTracedValue()->ToBaseValue(),
base::JSONWriter::OPTIONS_PRETTY_PRINT, &property_trees);
VLOG(3) << "After finishing commit on impl, the sync tree:"
<< "\nproperty_trees:\n"
<< property_trees << "\nlayers:\n"
<< host_impl->LayerListAsJson();
}
}
void LayerTreeHost::ImageDecodesFinished(
const std::vector<std::pair<int, bool>>& results) {
// Issue stored callbacks and remove them from the pending list.
for (const auto& pair : results) {
auto it = pending_image_decodes_.find(pair.first);
DCHECK(it != pending_image_decodes_.end());
std::move(it->second).Run(pair.second);
pending_image_decodes_.erase(it);
}
}
void LayerTreeHost::PushPropertyTreesTo(LayerTreeImpl* tree_impl) {
bool property_trees_changed_on_active_tree =
tree_impl->IsActiveTree() && tree_impl->property_trees()->changed;
// Property trees may store damage status. We preserve the sync tree damage
// status by pushing the damage status from sync tree property trees to main
// thread property trees or by moving it onto the layers.
if (root_layer_ && property_trees_changed_on_active_tree) {
if (property_trees_.sequence_number ==
tree_impl->property_trees()->sequence_number)
tree_impl->property_trees()->PushChangeTrackingTo(&property_trees_);
else
tree_impl->MoveChangeTrackingToLayers();
}
tree_impl->SetPropertyTrees(&property_trees_);
}
void LayerTreeHost::WillCommit() {
swap_promise_manager_.WillCommit();
client_->WillCommit();
if (frame_viewer_instrumentation::IsTracingLayerTreeSnapshots()) {
bool is_new_trace;
TRACE_EVENT_IS_NEW_TRACE(&is_new_trace);
if (is_new_trace) {
// We'll be dumping layer trees as part of trace, so make sure
// PushPropertiesTo() propagates layer debug info to the impl side --
// otherwise this won't happen for the layers that remain unchanged since
// tracing started.
LayerTreeHostCommon::CallFunctionForEveryLayer(
this, [](Layer* layer) { layer->SetNeedsPushProperties(); });
}
for (Layer* layer : LayersThatShouldPushProperties())
layer->UpdateDebugInfo();
}
}
void LayerTreeHost::UpdateDeferCommitsInternal() {
proxy_->SetDeferCommits(defer_commits_count_ > 0 ||
(settings_.enable_surface_synchronization &&
!local_surface_id_from_parent_.is_valid()));
}
bool LayerTreeHost::IsUsingLayerLists() const {
return settings_.use_layer_lists;
}
void LayerTreeHost::CommitComplete() {
source_frame_number_++;
client_->DidCommit();
if (did_complete_scale_animation_) {
client_->DidCompletePageScaleAnimation();
did_complete_scale_animation_ = false;
}
}
void LayerTreeHost::SetLayerTreeFrameSink(
std::unique_ptr<LayerTreeFrameSink> surface) {
TRACE_EVENT0("cc", "LayerTreeHost::SetLayerTreeFrameSink");
DCHECK(surface);
DCHECK(!new_layer_tree_frame_sink_);
new_layer_tree_frame_sink_ = std::move(surface);
proxy_->SetLayerTreeFrameSink(new_layer_tree_frame_sink_.get());
}
std::unique_ptr<LayerTreeFrameSink> LayerTreeHost::ReleaseLayerTreeFrameSink() {
DCHECK(!visible_);
DidLoseLayerTreeFrameSink();
proxy_->ReleaseLayerTreeFrameSink();
return std::move(current_layer_tree_frame_sink_);
}
void LayerTreeHost::RequestNewLayerTreeFrameSink() {
client_->RequestNewLayerTreeFrameSink();
}
void LayerTreeHost::DidInitializeLayerTreeFrameSink() {
DCHECK(new_layer_tree_frame_sink_);
current_layer_tree_frame_sink_ = std::move(new_layer_tree_frame_sink_);
client_->DidInitializeLayerTreeFrameSink();
}
void LayerTreeHost::DidFailToInitializeLayerTreeFrameSink() {
DCHECK(new_layer_tree_frame_sink_);
// Note: It is safe to drop all output surface references here as
// LayerTreeHostImpl will not keep a pointer to either the old or
// new LayerTreeFrameSink after failing to initialize the new one.
current_layer_tree_frame_sink_ = nullptr;
new_layer_tree_frame_sink_ = nullptr;
client_->DidFailToInitializeLayerTreeFrameSink();
}
std::unique_ptr<LayerTreeHostImpl>
LayerTreeHost::CreateLayerTreeHostImpl(
LayerTreeHostImplClient* client) {
DCHECK(task_runner_provider_->IsImplThread());
const bool supports_impl_scrolling = task_runner_provider_->HasImplThread();
std::unique_ptr<MutatorHost> mutator_host_impl =
mutator_host_->CreateImplInstance(supports_impl_scrolling);
std::unique_ptr<LayerTreeHostImpl> host_impl = LayerTreeHostImpl::Create(
settings_, client, task_runner_provider_.get(),
rendering_stats_instrumentation_.get(), task_graph_runner_,
std::move(mutator_host_impl), id_, std::move(image_worker_task_runner_));
if (ukm_recorder_factory_) {
host_impl->InitializeUkm(ukm_recorder_factory_->CreateRecorder());
ukm_recorder_factory_.reset();
}
host_impl->SetHasGpuRasterizationTrigger(has_gpu_rasterization_trigger_);
host_impl->SetContentHasSlowPaths(content_has_slow_paths_);
host_impl->SetContentHasNonAAPaint(content_has_non_aa_paint_);
task_graph_runner_ = nullptr;
input_handler_weak_ptr_ = host_impl->AsWeakPtr();
return host_impl;
}
void LayerTreeHost::DidLoseLayerTreeFrameSink() {
TRACE_EVENT0("cc", "LayerTreeHost::DidLoseLayerTreeFrameSink");
DCHECK(task_runner_provider_->IsMainThread());
SetNeedsCommit();
}
ScopedDeferCommits::ScopedDeferCommits(LayerTreeHost* host)
: host_(host->defer_commits_weak_ptr_factory_.GetWeakPtr()) {
host->defer_commits_count_++;
host->UpdateDeferCommitsInternal();
}
ScopedDeferCommits::~ScopedDeferCommits() {
LayerTreeHost* host = host_.get();
if (host) {
DCHECK_GT(host->defer_commits_count_, 0u);
if (--host->defer_commits_count_ == 0)
host->UpdateDeferCommitsInternal();
}
}
std::unique_ptr<ScopedDeferCommits> LayerTreeHost::DeferCommits() {
return std::make_unique<ScopedDeferCommits>(this);
}
DISABLE_CFI_PERF
void LayerTreeHost::SetNeedsAnimate() {
proxy_->SetNeedsAnimate();
swap_promise_manager_.NotifySwapPromiseMonitorsOfSetNeedsCommit();
}
DISABLE_CFI_PERF
void LayerTreeHost::SetNeedsUpdateLayers() {
proxy_->SetNeedsUpdateLayers();
swap_promise_manager_.NotifySwapPromiseMonitorsOfSetNeedsCommit();
}
void LayerTreeHost::SetNeedsCommit() {
proxy_->SetNeedsCommit();
swap_promise_manager_.NotifySwapPromiseMonitorsOfSetNeedsCommit();
}
bool LayerTreeHost::RequestedMainFramePending() {
return proxy_->RequestedAnimatePending();
}
void LayerTreeHost::SetNeedsRecalculateRasterScales() {
next_commit_forces_recalculate_raster_scales_ = true;
proxy_->SetNeedsCommit();
}
void LayerTreeHost::SetNeedsRedrawRect(const gfx::Rect& damage_rect) {
proxy_->SetNeedsRedraw(damage_rect);
}
bool LayerTreeHost::CommitRequested() const {
return proxy_->CommitRequested();
}
void LayerTreeHost::SetNextCommitWaitsForActivation() {
proxy_->SetNextCommitWaitsForActivation();
}
void LayerTreeHost::SetNeedsCommitWithForcedRedraw() {
next_commit_forces_redraw_ = true;
proxy_->SetNeedsCommit();
}
void LayerTreeHost::SetAnimationEvents(
std::unique_ptr<MutatorEvents> events) {
DCHECK(task_runner_provider_->IsMainThread());
mutator_host_->SetAnimationEvents(std::move(events));
}
void LayerTreeHost::SetDebugState(
const LayerTreeDebugState& debug_state) {
LayerTreeDebugState new_debug_state =
LayerTreeDebugState::Unite(settings_.initial_debug_state, debug_state);
if (LayerTreeDebugState::Equal(debug_state_, new_debug_state))
return;
debug_state_ = new_debug_state;
rendering_stats_instrumentation_->set_record_rendering_stats(
debug_state_.RecordRenderingStats());
SetNeedsCommit();
}
void LayerTreeHost::SetHasGpuRasterizationTrigger(bool has_trigger) {
if (has_trigger == has_gpu_rasterization_trigger_)
return;
has_gpu_rasterization_trigger_ = has_trigger;
TRACE_EVENT_INSTANT1("cc", "LayerTreeHost::SetHasGpuRasterizationTrigger",
TRACE_EVENT_SCOPE_THREAD, "has_trigger",
has_gpu_rasterization_trigger_);
}
void LayerTreeHost::ApplyPageScaleDeltaFromImplSide(
float page_scale_delta) {
DCHECK(CommitRequested());
if (page_scale_delta == 1.f)
return;
float page_scale = page_scale_factor_ * page_scale_delta;
SetPageScaleFromImplSide(page_scale);
}
void LayerTreeHost::SetVisible(bool visible) {
if (visible_ == visible)
return;
visible_ = visible;
proxy_->SetVisible(visible);
}
bool LayerTreeHost::IsVisible() const {
return visible_;
}
void LayerTreeHost::NotifyInputThrottledUntilCommit() {
proxy_->NotifyInputThrottledUntilCommit();
}
void LayerTreeHost::LayoutAndUpdateLayers() {
DCHECK(IsSingleThreaded());
// This function is only valid when not using the scheduler.
DCHECK(!settings_.single_thread_proxy_scheduler);
RequestMainFrameUpdate();
UpdateLayers();
}
void LayerTreeHost::Composite(base::TimeTicks frame_begin_time, bool raster) {
DCHECK(IsSingleThreaded());
// This function is only valid when not using the scheduler.
DCHECK(!settings_.single_thread_proxy_scheduler);
SingleThreadProxy* proxy = static_cast<SingleThreadProxy*>(proxy_.get());
proxy->CompositeImmediately(frame_begin_time, raster);
}
bool LayerTreeHost::UpdateLayers() {
if (!root_layer()) {
property_trees_.clear();
return false;
}
DCHECK(!root_layer()->parent());
base::ElapsedTimer timer;
bool result = DoUpdateLayers(root_layer());
micro_benchmark_controller_.DidUpdateLayers();
if (const char* client_name = GetClientNameForMetrics()) {
auto elapsed = timer.Elapsed().InMicroseconds();
std::string histogram_name =
base::StringPrintf("Compositing.%s.LayersUpdateTime", client_name);
base::UmaHistogramCounts10M(histogram_name, elapsed);
}
return result;
}
void LayerTreeHost::DidPresentCompositorFrame(
uint32_t frame_token,
std::vector<LayerTreeHost::PresentationTimeCallback> callbacks,
const gfx::PresentationFeedback& feedback) {
for (auto& callback : callbacks)
std::move(callback).Run(feedback);
client_->DidPresentCompositorFrame(frame_token, feedback);
}
void LayerTreeHost::DidCompletePageScaleAnimation() {
did_complete_scale_animation_ = true;
}
void LayerTreeHost::RecordGpuRasterizationHistogram(
const LayerTreeHostImpl* host_impl) {
// Gpu rasterization is only supported for Renderer compositors.
// Checking for IsSingleThreaded() to exclude Browser compositors.
if (gpu_rasterization_histogram_recorded_ || IsSingleThreaded())
return;
bool gpu_rasterization_enabled = false;
if (host_impl->layer_tree_frame_sink()) {
viz::ContextProvider* compositor_context_provider =
host_impl->layer_tree_frame_sink()->context_provider();
if (compositor_context_provider) {
gpu_rasterization_enabled =
compositor_context_provider->ContextCapabilities().gpu_rasterization;
}
}
// Record how widely gpu rasterization is enabled.
// This number takes device/gpu whitelisting/backlisting into account.
// Note that we do not consider the forced gpu rasterization mode, which is
// mostly used for debugging purposes.
UMA_HISTOGRAM_BOOLEAN("Renderer4.GpuRasterizationEnabled",
gpu_rasterization_enabled);
if (gpu_rasterization_enabled) {
UMA_HISTOGRAM_BOOLEAN("Renderer4.GpuRasterizationTriggered",
has_gpu_rasterization_trigger_);
UMA_HISTOGRAM_BOOLEAN("Renderer4.GpuRasterizationSuitableContent",
!content_has_slow_paths_);
UMA_HISTOGRAM_BOOLEAN("Renderer4.GpuRasterizationSlowPathsWithNonAAPaint",
content_has_slow_paths_ && content_has_non_aa_paint_);
// Record how many pages actually get gpu rasterization when enabled.
UMA_HISTOGRAM_BOOLEAN(
"Renderer4.GpuRasterizationUsed",
(has_gpu_rasterization_trigger_ && !content_has_slow_paths_));
}
gpu_rasterization_histogram_recorded_ = true;
}
bool LayerTreeHost::DoUpdateLayers(Layer* root_layer) {
TRACE_EVENT1("cc,benchmark", "LayerTreeHost::DoUpdateLayers",
"source_frame_number", SourceFrameNumber());
UpdateHudLayer(debug_state_.ShowHudInfo());
// The non-layer-list mode is used when blink provides cc with a layer tree
// and cc needs to compute property trees from that.
// In layer lists mode, blink sends cc property trees directly so they do not
// need to be built here. Layer lists mode is used by BlinkGenPropertyTrees
// and SlimmingPaintV2.
if (!IsUsingLayerLists()) {
TRACE_EVENT0("cc", "LayerTreeHost::UpdateLayers::BuildPropertyTrees");
TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("cc.debug.cdp-perf"),
"LayerTreeHostCommon::ComputeVisibleRectsWithPropertyTrees");
Layer* root_scroll =
PropertyTreeBuilder::FindFirstScrollableLayer(root_layer);
Layer* page_scale_layer = viewport_layers_.page_scale.get();
if (!page_scale_layer && root_scroll)
page_scale_layer = root_scroll->parent();
gfx::Transform identity_transform;
PropertyTreeBuilder::BuildPropertyTrees(
root_layer, page_scale_layer, inner_viewport_scroll_layer(),
outer_viewport_scroll_layer(), overscroll_elasticity_element_id(),
elastic_overscroll_, page_scale_factor_, device_scale_factor_,
gfx::Rect(device_viewport_size_), identity_transform, &property_trees_);
TRACE_EVENT_INSTANT1("cc", "LayerTreeHost::UpdateLayers_BuiltPropertyTrees",
TRACE_EVENT_SCOPE_THREAD, "property_trees",
property_trees_.AsTracedValue());
} else {
TRACE_EVENT_INSTANT1("cc",
"LayerTreeHost::UpdateLayers_ReceivedPropertyTrees",
TRACE_EVENT_SCOPE_THREAD, "property_trees",
property_trees_.AsTracedValue());
// The HUD layer is managed outside the layer list sent to LayerTreeHost
// and needs to have its property tree state set.
if (hud_layer_ && root_layer_.get()) {
hud_layer_->SetTransformTreeIndex(root_layer_->transform_tree_index());
hud_layer_->SetEffectTreeIndex(root_layer_->effect_tree_index());
hud_layer_->SetClipTreeIndex(root_layer_->clip_tree_index());
hud_layer_->SetScrollTreeIndex(root_layer_->scroll_tree_index());
hud_layer_->set_property_tree_sequence_number(
root_layer_->property_tree_sequence_number());
}
}
#if DCHECK_IS_ON()
// Ensure property tree nodes were created for all layers. When using layer
// lists, this can fail if blink doesn't setup layers or nodes correctly in
// |PaintArtifactCompositor|. When not using layer lists, this can fail if
// |PropertyTreeBuilder::BuildPropertyTrees| fails to create property tree
// nodes.
for (auto* layer : *this) {
DCHECK(property_trees_.effect_tree.Node(layer->effect_tree_index()));
DCHECK(property_trees_.transform_tree.Node(layer->transform_tree_index()));
DCHECK(property_trees_.clip_tree.Node(layer->clip_tree_index()));
DCHECK(property_trees_.scroll_tree.Node(layer->scroll_tree_index()));
}
#endif
draw_property_utils::UpdatePropertyTrees(this, &property_trees_);
LayerList update_layer_list;
draw_property_utils::FindLayersThatNeedUpdates(this, &property_trees_,
&update_layer_list);
// Dump property trees and layers if run with:
// --vmodule=layer_tree_host=3
// This only prints output for the renderer.
if (VLOG_IS_ON(3) && GetClientNameForMetrics() == std::string("Renderer")) {
std::string property_trees;
base::JSONWriter::WriteWithOptions(
*property_trees_.AsTracedValue()->ToBaseValue(),
base::JSONWriter::OPTIONS_PRETTY_PRINT, &property_trees);
std::ostringstream layers;
for (auto* layer : *this) {
layers << "\n layer id " << layer->id();
layers << "\n element_id: " << layer->element_id();
layers << "\n bounds: " << layer->bounds().ToString();
layers << "\n opacity: " << layer->opacity();
layers << "\n position: " << layer->position().ToString();
layers << "\n draws_content: " << layer->DrawsContent();
layers << "\n scrollable: " << layer->scrollable();
layers << "\n contents_opaque: " << layer->contents_opaque();
layers << "\n transform_tree_index: " << layer->transform_tree_index();
layers << "\n clip_tree_index: " << layer->clip_tree_index();
layers << "\n effect_tree_index: " << layer->effect_tree_index();
layers << "\n scroll_tree_index: " << layer->scroll_tree_index();
}
VLOG(3) << "After updating layers on the main thread:\nproperty trees:\n"
<< property_trees << "\nlayers:" << layers.str();
}
bool painted_content_has_slow_paths = false;
bool painted_content_has_non_aa_paint = false;
bool did_paint_content =
PaintContent(update_layer_list, &painted_content_has_slow_paths,
&painted_content_has_non_aa_paint);
// |painted_content_has_non_aa_paint| is a correctness (not performance)
// modifier, if it changes we immediately update. To prevent churn, this flag
// is sticky.
content_has_non_aa_paint_ |= painted_content_has_non_aa_paint;
// If no slow-path content has appeared for a required number of frames,
// update the flag.
if (!painted_content_has_slow_paths) {
++num_consecutive_frames_without_slow_paths_;
if (num_consecutive_frames_without_slow_paths_ >=
kNumFramesToConsiderBeforeRemovingSlowPathFlag) {
content_has_slow_paths_ = false;
}
} else {
num_consecutive_frames_without_slow_paths_ = 0;
content_has_slow_paths_ = true;
}
return did_paint_content;
}
void LayerTreeHost::ApplyViewportChanges(const ScrollAndScaleSet& info) {
gfx::Vector2dF inner_viewport_scroll_delta;
if (info.inner_viewport_scroll.element_id)
inner_viewport_scroll_delta = info.inner_viewport_scroll.scroll_delta;
if (inner_viewport_scroll_delta.IsZero() && info.page_scale_delta == 1.f &&
info.elastic_overscroll_delta.IsZero() && !info.top_controls_delta &&
!info.browser_controls_constraint_changed) {
return;
}
// Preemptively apply the scroll offset and scale delta here before sending
// it to the client. If the client comes back and sets it to the same
// value, then the layer can early out without needing a full commit.
if (viewport_layers_.inner_viewport_scroll) {
viewport_layers_.inner_viewport_scroll->SetScrollOffsetFromImplSide(
gfx::ScrollOffsetWithDelta(
viewport_layers_.inner_viewport_scroll->CurrentScrollOffset(),
inner_viewport_scroll_delta));
}
ApplyPageScaleDeltaFromImplSide(info.page_scale_delta);
SetElasticOverscrollFromImplSide(elastic_overscroll_ +
info.elastic_overscroll_delta);
// TODO(ccameron): pass the elastic overscroll here so that input events
// may be translated appropriately.
client_->ApplyViewportChanges({inner_viewport_scroll_delta,
info.elastic_overscroll_delta,
info.page_scale_delta, info.top_controls_delta,
info.browser_controls_constraint});
SetNeedsUpdateLayers();
}
void LayerTreeHost::RecordWheelAndTouchScrollingCount(
const ScrollAndScaleSet& info) {
bool has_scrolled_by_wheel = info.has_scrolled_by_wheel;
bool has_scrolled_by_touch = info.has_scrolled_by_touch;
if (has_scrolled_by_wheel || has_scrolled_by_touch) {
client_->RecordWheelAndTouchScrollingCount(has_scrolled_by_wheel,
has_scrolled_by_touch);
}
}
void LayerTreeHost::ApplyScrollAndScale(ScrollAndScaleSet* info) {
DCHECK(info);
for (auto& swap_promise : info->swap_promises) {
TRACE_EVENT_WITH_FLOW1("input,benchmark", "LatencyInfo.Flow",
TRACE_ID_DONT_MANGLE(swap_promise->TraceId()),
TRACE_EVENT_FLAG_FLOW_IN | TRACE_EVENT_FLAG_FLOW_OUT,
"step", "Main thread scroll update");
swap_promise_manager_.QueueSwapPromise(std::move(swap_promise));
}
if (root_layer_) {
for (size_t i = 0; i < info->scrolls.size(); ++i) {
Layer* layer = LayerByElementId(info->scrolls[i].element_id);
if (!layer)
continue;
layer->SetScrollOffsetFromImplSide(gfx::ScrollOffsetWithDelta(
layer->CurrentScrollOffset(), info->scrolls[i].scroll_delta));
SetNeedsUpdateLayers();
}
for (size_t i = 0; i < info->scrollbars.size(); ++i) {
Layer* layer = LayerByElementId(info->scrollbars[i].element_id);
if (!layer)
continue;
layer->SetScrollbarsHiddenFromImplSide(info->scrollbars[i].hidden);
}
}
// This needs to happen after scroll deltas have been sent to prevent top
// controls from clamping the layout viewport both on the compositor and
// on the main thread.
ApplyViewportChanges(*info);
RecordWheelAndTouchScrollingCount(*info);
}
void LayerTreeHost::RecordEndOfFrameMetrics(base::TimeTicks frame_begin_time) {
client_->RecordEndOfFrameMetrics(frame_begin_time);
}
const base::WeakPtr<InputHandler>& LayerTreeHost::GetInputHandler()
const {
return input_handler_weak_ptr_;
}
void LayerTreeHost::UpdateBrowserControlsState(
BrowserControlsState constraints,
BrowserControlsState current,
bool animate) {
// Browser controls are only used in threaded mode but Blink layout tests may
// call into this. The single threaded version is a no-op.
proxy_->UpdateBrowserControlsState(constraints, current, animate);
}
void LayerTreeHost::AnimateLayers(base::TimeTicks monotonic_time) {
// We do not need to animate on the main thread in this case because all
// relevant changes will be processed on the compositor thread, or proxy,
// and propagated back to the correct trees.
// TODO(majidvp): We should be able to eliminate this in the non-
// slimming path and will do so in a follow up. (762717)
if (IsUsingLayerLists())
return;
std::unique_ptr<MutatorEvents> events = mutator_host_->CreateEvents();
if (mutator_host_->TickAnimations(monotonic_time,
property_trees()->scroll_tree, true))
mutator_host_->UpdateAnimationState(true, events.get());
if (!events->IsEmpty())
property_trees_.needs_rebuild = true;
}
int LayerTreeHost::ScheduleMicroBenchmark(
const std::string& benchmark_name,
std::unique_ptr<base::Value> value,
MicroBenchmark::DoneCallback callback) {
return micro_benchmark_controller_.ScheduleRun(
benchmark_name, std::move(value), std::move(callback));
}
bool LayerTreeHost::SendMessageToMicroBenchmark(
int id,
std::unique_ptr<base::Value> value) {
return micro_benchmark_controller_.SendMessage(id, std::move(value));
}
void LayerTreeHost::SetLayerTreeMutator(
std::unique_ptr<LayerTreeMutator> mutator) {
// The animation worklet system assumes that the mutator will never be called
// from the main thread, which will not be the case if we're running in
// single-threaded mode.
if (!task_runner_provider_->HasImplThread()) {
DLOG(ERROR) << "LayerTreeMutator not supported in single-thread mode";
return;
}
proxy_->SetMutator(std::move(mutator));
}
bool LayerTreeHost::IsSingleThreaded() const {
DCHECK(compositor_mode_ != CompositorMode::SINGLE_THREADED ||
!task_runner_provider_->HasImplThread());
return compositor_mode_ == CompositorMode::SINGLE_THREADED;
}
bool LayerTreeHost::IsThreaded() const {
DCHECK(compositor_mode_ != CompositorMode::THREADED ||
task_runner_provider_->HasImplThread());
return compositor_mode_ == CompositorMode::THREADED;
}
void LayerTreeHost::RequestPresentationTimeForNextFrame(
PresentationTimeCallback callback) {
pending_presentation_time_callbacks_.push_back(std::move(callback));
}
void LayerTreeHost::SetRootLayer(scoped_refptr<Layer> root_layer) {
if (root_layer_.get() == root_layer.get())
return;
if (root_layer_.get())
root_layer_->SetLayerTreeHost(nullptr);
root_layer_ = root_layer;
if (root_layer_.get()) {
DCHECK(!root_layer_->parent());
root_layer_->SetLayerTreeHost(this);
}
if (hud_layer_.get())
hud_layer_->RemoveFromParent();
// Reset gpu rasterization tracking.
// This flag is sticky until a new tree comes along.
content_has_slow_paths_ = false;
content_has_non_aa_paint_ = false;
gpu_rasterization_histogram_recorded_ = false;
SetNeedsFullTreeSync();
}
LayerTreeHost::ViewportLayers::ViewportLayers() = default;
LayerTreeHost::ViewportLayers::~ViewportLayers() = default;
void LayerTreeHost::RegisterViewportLayers(const ViewportLayers& layers) {
DCHECK(!layers.inner_viewport_scroll ||
layers.inner_viewport_scroll != layers.outer_viewport_scroll);
// The page scale layer only affects the innter viewport scroll layer. The
// page scale layer should be sandwiched between the inner viewport scroll and
// inner viewport container layers:
// inner viewport container
// overscroll elasticity (optional)
// page scale
// inner viewport scroll
DCHECK(IsUsingLayerLists() || !layers.page_scale ||
layers.inner_viewport_scroll->parent() == layers.page_scale);
DCHECK(IsUsingLayerLists() || !layers.page_scale ||
layers.page_scale->parent()->element_id() ==
layers.overscroll_elasticity_element_id ||
layers.page_scale->parent() == layers.inner_viewport_container);
viewport_layers_.overscroll_elasticity_element_id =
layers.overscroll_elasticity_element_id;
viewport_layers_.page_scale = layers.page_scale;
viewport_layers_.inner_viewport_container = layers.inner_viewport_container;
viewport_layers_.outer_viewport_container = layers.outer_viewport_container;
viewport_layers_.inner_viewport_scroll = layers.inner_viewport_scroll;
viewport_layers_.outer_viewport_scroll = layers.outer_viewport_scroll;
}
void LayerTreeHost::RegisterSelection(const LayerSelection& selection) {
if (selection_ == selection)
return;
selection_ = selection;
SetNeedsCommit();
}
void LayerTreeHost::SetHaveScrollEventHandlers(bool have_event_handlers) {
if (have_scroll_event_handlers_ == have_event_handlers)
return;
have_scroll_event_handlers_ = have_event_handlers;
SetNeedsCommit();
}
void LayerTreeHost::SetEventListenerProperties(
EventListenerClass event_class,
EventListenerProperties properties) {
const size_t index = static_cast<size_t>(event_class);
if (event_listener_properties_[index] == properties)
return;
// If the mouse wheel event listener is blocking, then every layer in the
// layer tree sets a wheel event handler region to be its entire bounds,
// otherwise it sets it to empty.
//
// Thus when it changes, we might want to request every layer to push
// properties and recompute its wheel event handler region, since the
// computation is done in PushPropertiesTo. However neither
// SetSubtreePropertyChanged() nor SetNeedsFullTreeSync() do this, so
// it is unclear why we call them.
// Also why we don't want to recompute the wheel event handler region for all
// layers when the blocking state goes away is unclear. Also why we mark all
// layers below the root layer as damaged is unclear.
// TODO(bokan): Sort out what should be set and why. https://crbug.com/881011
//
// TODO(sunxd): Remove NeedsFullTreeSync when computing mouse wheel event
// handler region is done.
if (event_class == EventListenerClass::kMouseWheel) {
bool new_property_is_blocking =
properties == EventListenerProperties::kBlocking ||
properties == EventListenerProperties::kBlockingAndPassive;
EventListenerProperties old_properties = event_listener_properties_[index];
bool old_property_is_blocking =
old_properties == EventListenerProperties::kBlocking ||
old_properties == EventListenerProperties::kBlockingAndPassive;
if (!old_property_is_blocking && new_property_is_blocking) {
if (root_layer())
root_layer()->SetSubtreePropertyChanged();
SetNeedsFullTreeSync();
}
}
event_listener_properties_[index] = properties;
SetNeedsCommit();
}
void LayerTreeHost::SetViewportSizeAndScale(
const gfx::Size& device_viewport_size,
float device_scale_factor,
const viz::LocalSurfaceId& local_surface_id_from_parent) {
SetLocalSurfaceIdFromParent(local_surface_id_from_parent);
bool changed = false;
if (device_viewport_size_ != device_viewport_size) {
device_viewport_size_ = device_viewport_size;
changed = true;
}
if (settings_.use_painted_device_scale_factor) {
DCHECK_EQ(device_scale_factor_, 1.f);
if (painted_device_scale_factor_ != device_scale_factor) {
painted_device_scale_factor_ = device_scale_factor;
changed = true;
}
} else {
DCHECK_EQ(painted_device_scale_factor_, 1.f);
if (device_scale_factor_ != device_scale_factor) {
device_scale_factor_ = device_scale_factor;
changed = true;
}
}
if (changed) {
SetPropertyTreesNeedRebuild();
SetNeedsCommit();
#if defined(OS_MACOSX)
// TODO(ccameron): This check is not valid on Aura or Mus yet, but should
// be.
CHECK(!has_pushed_local_surface_id_from_parent_ ||
new_local_surface_id_request_ ||
!local_surface_id_from_parent_.is_valid());
#endif
}
}
void LayerTreeHost::SetViewportVisibleRect(const gfx::Rect& visible_rect) {
if (visible_rect == viewport_visible_rect_)
return;
viewport_visible_rect_ = visible_rect;
SetPropertyTreesNeedRebuild();
SetNeedsCommit();
}
void LayerTreeHost::SetBrowserControlsHeight(float top_height,
float bottom_height,
bool shrink) {
if (top_controls_height_ == top_height &&
bottom_controls_height_ == bottom_height &&
browser_controls_shrink_blink_size_ == shrink)
return;
top_controls_height_ = top_height;
bottom_controls_height_ = bottom_height;
browser_controls_shrink_blink_size_ = shrink;
SetNeedsCommit();
}
void LayerTreeHost::SetBrowserControlsShownRatio(float ratio) {
if (top_controls_shown_ratio_ == ratio)
return;
top_controls_shown_ratio_ = ratio;
SetNeedsCommit();
}
void LayerTreeHost::SetOverscrollBehavior(const OverscrollBehavior& behavior) {
if (overscroll_behavior_ == behavior)
return;
overscroll_behavior_ = behavior;
SetNeedsCommit();
}
void LayerTreeHost::SetPageScaleFactorAndLimits(float page_scale_factor,
float min_page_scale_factor,
float max_page_scale_factor) {
if (page_scale_factor_ == page_scale_factor &&
min_page_scale_factor_ == min_page_scale_factor &&
max_page_scale_factor_ == max_page_scale_factor)
return;
DCHECK_GE(page_scale_factor, min_page_scale_factor);
DCHECK_LE(page_scale_factor, max_page_scale_factor);
// We should never process non-unit page_scale_delta for an OOPIF subframe.
// TODO(wjmaclean): Remove this check as a pre-condition to closing the bug.
// https://crbug.com/845097
CHECK(!settings_.is_layer_tree_for_subframe ||
page_scale_factor == page_scale_factor_)
<< "Setting PSF in oopif subframe: old psf = " << page_scale_factor_
<< ", new psf = " << page_scale_factor;
page_scale_factor_ = page_scale_factor;
min_page_scale_factor_ = min_page_scale_factor;
max_page_scale_factor_ = max_page_scale_factor;
SetPropertyTreesNeedRebuild();
SetNeedsCommit();
}
void LayerTreeHost::StartPageScaleAnimation(const gfx::Vector2d& target_offset,
bool use_anchor,
float scale,
base::TimeDelta duration) {
pending_page_scale_animation_.reset(new PendingPageScaleAnimation(
target_offset, use_anchor, scale, duration));
SetNeedsCommit();
}
bool LayerTreeHost::HasPendingPageScaleAnimation() const {
return !!pending_page_scale_animation_.get();
}
void LayerTreeHost::SetRecordingScaleFactor(float recording_scale_factor) {
if (recording_scale_factor_ == recording_scale_factor)
return;
recording_scale_factor_ = recording_scale_factor;
}
void LayerTreeHost::SetRasterColorSpace(
const gfx::ColorSpace& raster_color_space) {
if (raster_color_space_ == raster_color_space)
return;
raster_color_space_id_ = gfx::ColorSpace::GetNextId();
raster_color_space_ = raster_color_space;
LayerTreeHostCommon::CallFunctionForEveryLayer(
this, [](Layer* layer) { layer->SetNeedsDisplay(); });
}
void LayerTreeHost::SetContentSourceId(uint32_t id) {
content_source_id_ = id;
}
void LayerTreeHost::SetLocalSurfaceIdFromParent(
const viz::LocalSurfaceId& local_surface_id_from_parent) {
if (local_surface_id_from_parent_.parent_sequence_number() ==
local_surface_id_from_parent.parent_sequence_number() &&
local_surface_id_from_parent_.embed_token() ==
local_surface_id_from_parent.embed_token()) {
return;
}
TRACE_EVENT_WITH_FLOW2(
TRACE_DISABLED_BY_DEFAULT("viz.surface_id_flow"),
"LocalSurfaceId.Submission.Flow",
TRACE_ID_GLOBAL(local_surface_id_from_parent.submission_trace_id()),
TRACE_EVENT_FLAG_FLOW_IN | TRACE_EVENT_FLAG_FLOW_OUT, "step",
"SetLocalSurfaceIdFromParent", "local_surface_id",
local_surface_id_from_parent.ToString());
local_surface_id_from_parent_ = local_surface_id_from_parent;
has_pushed_local_surface_id_from_parent_ = false;
UpdateDeferCommitsInternal();
SetNeedsCommit();
}
void LayerTreeHost::ClearCachesOnNextCommit() {
clear_caches_on_next_commit_ = true;
}
void LayerTreeHost::RequestNewLocalSurfaceId() {
// If surface synchronization is enabled, then we can still request a new
// viz::LocalSurfaceId but that request will be deferred until we have a valid
// viz::LocalSurfaceId from the parent.
DCHECK(settings_.enable_surface_synchronization ||
local_surface_id_from_parent_.is_valid());
if (new_local_surface_id_request_)
return;
new_local_surface_id_request_ = true;
SetNeedsCommit();
}
bool LayerTreeHost::TakeNewLocalSurfaceIdRequest() {
bool new_local_surface_id_request = new_local_surface_id_request_;
new_local_surface_id_request_ = false;
return new_local_surface_id_request;
}
void LayerTreeHost::RegisterLayer(Layer* layer) {
DCHECK(!LayerById(layer->id()));
DCHECK(!in_paint_layer_contents_);
layer_id_map_[layer->id()] = layer;
if (!IsUsingLayerLists() && layer->element_id()) {
mutator_host_->RegisterElement(layer->element_id(),
ElementListType::ACTIVE);
}
}
void LayerTreeHost::UnregisterLayer(Layer* layer) {
DCHECK(LayerById(layer->id()));
DCHECK(!in_paint_layer_contents_);
if (!IsUsingLayerLists() && layer->element_id()) {
mutator_host_->UnregisterElement(layer->element_id(),
ElementListType::ACTIVE);
}
layers_that_should_push_properties_.erase(layer);
layer_id_map_.erase(layer->id());
}
Layer* LayerTreeHost::LayerById(int id) const {
auto iter = layer_id_map_.find(id);
return iter != layer_id_map_.end() ? iter->second : nullptr;
}
bool LayerTreeHost::PaintContent(const LayerList& update_layer_list,
bool* content_has_slow_paths,
bool* content_has_non_aa_paint) {
base::AutoReset<bool> painting(&in_paint_layer_contents_, true);
bool did_paint_content = false;
for (const auto& layer : update_layer_list) {
did_paint_content |= layer->Update();
*content_has_slow_paths |= layer->HasSlowPaths();
*content_has_non_aa_paint |= layer->HasNonAAPaint();
}
return did_paint_content;
}
void LayerTreeHost::AddSurfaceRange(const viz::SurfaceRange& surface_range) {
if (++surface_ranges_[surface_range] == 1)
needs_surface_ranges_sync_ = true;
}
void LayerTreeHost::RemoveSurfaceRange(const viz::SurfaceRange& surface_range) {
auto iter = surface_ranges_.find(surface_range);
if (iter == surface_ranges_.end())
return;
if (--iter->second <= 0) {
surface_ranges_.erase(iter);
needs_surface_ranges_sync_ = true;
}
}
base::flat_set<viz::SurfaceRange> LayerTreeHost::SurfaceRanges() const {
base::flat_set<viz::SurfaceRange> ranges;
for (auto& map_entry : surface_ranges_)
ranges.insert(map_entry.first);
return ranges;
}
void LayerTreeHost::AddLayerShouldPushProperties(Layer* layer) {
layers_that_should_push_properties_.insert(layer);
}
void LayerTreeHost::RemoveLayerShouldPushProperties(Layer* layer) {
layers_that_should_push_properties_.erase(layer);
}
void LayerTreeHost::ClearLayersThatShouldPushProperties() {
layers_that_should_push_properties_.clear();
}
void LayerTreeHost::SetPageScaleFromImplSide(float page_scale) {
DCHECK(CommitRequested());
// We should never process non-unit page_scale_delta for an OOPIF subframe.
// TODO(wjmaclean): Remove this check as a pre-condition to closing the bug.
// https://crbug.com/845097
DCHECK(!settings_.is_layer_tree_for_subframe ||
page_scale == page_scale_factor_)
<< "Setting PSF in oopif subframe: old psf = " << page_scale_factor_
<< ", new psf = " << page_scale;
page_scale_factor_ = page_scale;
SetPropertyTreesNeedRebuild();
}
void LayerTreeHost::SetElasticOverscrollFromImplSide(
gfx::Vector2dF elastic_overscroll) {
DCHECK(CommitRequested());
elastic_overscroll_ = elastic_overscroll;
}
void LayerTreeHost::UpdateHudLayer(bool show_hud_info) {
if (show_hud_info) {
if (!hud_layer_.get())
hud_layer_ = HeadsUpDisplayLayer::Create();
if (root_layer_.get() && !hud_layer_->parent())
root_layer_->AddChild(hud_layer_);
hud_layer_->UpdateLocationAndSize(device_viewport_size_,
device_scale_factor_);
} else if (hud_layer_.get()) {
hud_layer_->RemoveFromParent();
hud_layer_ = nullptr;
}
}
void LayerTreeHost::SetNeedsFullTreeSync() {
needs_full_tree_sync_ = true;
property_trees_.needs_rebuild = true;
SetNeedsCommit();
}
void LayerTreeHost::SetPropertyTreesNeedRebuild() {
property_trees_.needs_rebuild = true;
SetNeedsUpdateLayers();
}
void LayerTreeHost::PushLayerTreePropertiesTo(LayerTreeImpl* tree_impl) {
tree_impl->set_needs_full_tree_sync(needs_full_tree_sync_);
needs_full_tree_sync_ = false;
if (hud_layer_.get()) {
LayerImpl* hud_impl = tree_impl->LayerById(hud_layer_->id());
tree_impl->set_hud_layer(static_cast<HeadsUpDisplayLayerImpl*>(hud_impl));
} else {
tree_impl->set_hud_layer(nullptr);
}
tree_impl->set_background_color(background_color_);
tree_impl->set_have_scroll_event_handlers(have_scroll_event_handlers_);
tree_impl->set_event_listener_properties(
EventListenerClass::kTouchStartOrMove,
event_listener_properties(EventListenerClass::kTouchStartOrMove));
tree_impl->set_event_listener_properties(
EventListenerClass::kMouseWheel,
event_listener_properties(EventListenerClass::kMouseWheel));
tree_impl->set_event_listener_properties(
EventListenerClass::kTouchEndOrCancel,
event_listener_properties(EventListenerClass::kTouchEndOrCancel));
if (viewport_layers_.inner_viewport_scroll) {
LayerTreeImpl::ViewportLayerIds ids;
if (viewport_layers_.overscroll_elasticity_element_id) {
ids.overscroll_elasticity_element_id =
viewport_layers_.overscroll_elasticity_element_id;
}
ids.page_scale = viewport_layers_.page_scale->id();
if (viewport_layers_.inner_viewport_container)
ids.inner_viewport_container =
viewport_layers_.inner_viewport_container->id();
if (viewport_layers_.outer_viewport_container)
ids.outer_viewport_container =
viewport_layers_.outer_viewport_container->id();
ids.inner_viewport_scroll = viewport_layers_.inner_viewport_scroll->id();
if (viewport_layers_.outer_viewport_scroll)
ids.outer_viewport_scroll = viewport_layers_.outer_viewport_scroll->id();
tree_impl->SetViewportLayersFromIds(ids);
DCHECK(viewport_layers_.inner_viewport_scroll
->IsContainerForFixedPositionLayers());
} else {
tree_impl->ClearViewportLayers();
}
tree_impl->RegisterSelection(selection_);
tree_impl->PushPageScaleFromMainThread(
page_scale_factor_, min_page_scale_factor_, max_page_scale_factor_);
tree_impl->set_browser_controls_shrink_blink_size(
browser_controls_shrink_blink_size_);
tree_impl->SetTopControlsHeight(top_controls_height_);
tree_impl->SetBottomControlsHeight(bottom_controls_height_);
tree_impl->set_overscroll_behavior(overscroll_behavior_);
tree_impl->PushBrowserControlsFromMainThread(top_controls_shown_ratio_);
tree_impl->elastic_overscroll()->PushMainToPending(elastic_overscroll_);
if (tree_impl->IsActiveTree())
tree_impl->elastic_overscroll()->PushPendingToActive();
tree_impl->SetRasterColorSpace(raster_color_space_id_, raster_color_space_);
tree_impl->set_content_source_id(content_source_id_);
tree_impl->set_painted_device_scale_factor(painted_device_scale_factor_);
tree_impl->SetDeviceScaleFactor(device_scale_factor_);
tree_impl->SetDeviceViewportSize(device_viewport_size_);
tree_impl->SetViewportVisibleRect(viewport_visible_rect_);
if (TakeNewLocalSurfaceIdRequest())
tree_impl->RequestNewLocalSurfaceId();
tree_impl->SetLocalSurfaceIdFromParent(local_surface_id_from_parent_);
has_pushed_local_surface_id_from_parent_ = true;
if (pending_page_scale_animation_) {
tree_impl->SetPendingPageScaleAnimation(
std::move(pending_page_scale_animation_));
}
tree_impl->set_has_ever_been_drawn(false);
}
void LayerTreeHost::PushSurfaceRangesTo(LayerTreeImpl* tree_impl) {
if (needs_surface_ranges_sync()) {
tree_impl->ClearSurfaceRanges();
tree_impl->SetSurfaceRanges(SurfaceRanges());
// Reset for next update
set_needs_surface_ranges_sync(false);
}
}
void LayerTreeHost::PushLayerTreeHostPropertiesTo(
LayerTreeHostImpl* host_impl) {
host_impl->SetHasGpuRasterizationTrigger(has_gpu_rasterization_trigger_);
host_impl->SetContentHasSlowPaths(content_has_slow_paths_);
host_impl->SetContentHasNonAAPaint(content_has_non_aa_paint_);
RecordGpuRasterizationHistogram(host_impl);
host_impl->SetDebugState(debug_state_);
}
Layer* LayerTreeHost::LayerByElementId(ElementId element_id) const {
auto iter = element_layers_map_.find(element_id);
return iter != element_layers_map_.end() ? iter->second : nullptr;
}
void LayerTreeHost::RegisterElement(ElementId element_id,
ElementListType list_type,
Layer* layer) {
element_layers_map_[element_id] = layer;
mutator_host_->RegisterElement(element_id, list_type);
}
void LayerTreeHost::UnregisterElement(ElementId element_id,
ElementListType list_type) {
mutator_host_->UnregisterElement(element_id, list_type);
element_layers_map_.erase(element_id);
}
static void SetElementIdForTesting(Layer* layer) {
layer->SetElementId(LayerIdToElementIdForTesting(layer->id()));
}
void LayerTreeHost::SetElementIdsForTesting() {
LayerTreeHostCommon::CallFunctionForEveryLayer(this, SetElementIdForTesting);
}
void LayerTreeHost::BuildPropertyTreesForTesting() {
gfx::Transform identity_transform;
PropertyTreeBuilder::BuildPropertyTrees(
root_layer(), page_scale_layer(), inner_viewport_scroll_layer(),
outer_viewport_scroll_layer(), overscroll_elasticity_element_id(),
elastic_overscroll(), page_scale_factor(), device_scale_factor(),
gfx::Rect(device_viewport_size()), identity_transform, property_trees());
}
bool LayerTreeHost::IsElementInList(ElementId element_id,
ElementListType list_type) const {
return list_type == ElementListType::ACTIVE && LayerByElementId(element_id);
}
void LayerTreeHost::SetMutatorsNeedCommit() {
SetNeedsCommit();
}
void LayerTreeHost::SetMutatorsNeedRebuildPropertyTrees() {
property_trees_.needs_rebuild = true;
}
void LayerTreeHost::SetElementFilterMutated(ElementId element_id,
ElementListType list_type,
const FilterOperations& filters) {
if (IsUsingLayerLists()) {
// In SPv2 we always have property trees and can set the filter
// directly on the effect node.
property_trees_.effect_tree.OnFilterAnimated(element_id, filters);
return;
}
Layer* layer = LayerByElementId(element_id);
DCHECK(layer);
layer->OnFilterAnimated(filters);
}
void LayerTreeHost::SetElementOpacityMutated(ElementId element_id,
ElementListType list_type,
float opacity) {
DCHECK_GE(opacity, 0.f);
DCHECK_LE(opacity, 1.f);
if (IsUsingLayerLists()) {
property_trees_.effect_tree.OnOpacityAnimated(element_id, opacity);
return;
}
Layer* layer = LayerByElementId(element_id);
DCHECK(layer);
layer->OnOpacityAnimated(opacity);
if (EffectNode* node =
property_trees_.effect_tree.Node(layer->effect_tree_index())) {
DCHECK_EQ(layer->effect_tree_index(), node->id);
if (node->opacity == opacity)
return;
node->opacity = opacity;
property_trees_.effect_tree.set_needs_update(true);
}
SetNeedsUpdateLayers();
}
void LayerTreeHost::SetElementTransformMutated(
ElementId element_id,
ElementListType list_type,
const gfx::Transform& transform) {
if (IsUsingLayerLists()) {
property_trees_.transform_tree.OnTransformAnimated(element_id, transform);
return;
}
Layer* layer = LayerByElementId(element_id);
DCHECK(layer);
layer->OnTransformAnimated(transform);
if (layer->has_transform_node()) {
TransformNode* node =
property_trees_.transform_tree.Node(layer->transform_tree_index());
if (node->local == transform)
return;
node->local = transform;
node->needs_local_transform_update = true;
node->has_potential_animation = true;
property_trees_.transform_tree.set_needs_update(true);
}
SetNeedsUpdateLayers();
}
void LayerTreeHost::SetElementScrollOffsetMutated(
ElementId element_id,
ElementListType list_type,
const gfx::ScrollOffset& scroll_offset) {
// Do nothing. Scroll deltas will be sent from the compositor thread back
// to the main thread in the same manner as during non-animated
// compositor-driven scrolling.
}
void LayerTreeHost::ElementIsAnimatingChanged(
ElementId element_id,
ElementListType list_type,
const PropertyAnimationState& mask,
const PropertyAnimationState& state) {
DCHECK_EQ(ElementListType::ACTIVE, list_type);
property_trees()->ElementIsAnimatingChanged(mutator_host(), element_id,
list_type, mask, state, true);
}
gfx::ScrollOffset LayerTreeHost::GetScrollOffsetForAnimation(
ElementId element_id) const {
return property_trees()->scroll_tree.current_scroll_offset(element_id);
}
void LayerTreeHost::QueueImageDecode(const PaintImage& image,
base::OnceCallback<void(bool)> callback) {
TRACE_EVENT0("cc", "LayerTreeHost::QueueImageDecode");
queued_image_decodes_.emplace_back(image, std::move(callback));
SetNeedsCommit();
}
LayerListIterator<Layer> LayerTreeHost::begin() const {
return LayerListIterator<Layer>(root_layer_.get());
}
LayerListIterator<Layer> LayerTreeHost::end() const {
return LayerListIterator<Layer>(nullptr);
}
LayerListReverseIterator<Layer> LayerTreeHost::rbegin() {
return LayerListReverseIterator<Layer>(root_layer_.get());
}
LayerListReverseIterator<Layer> LayerTreeHost::rend() {
return LayerListReverseIterator<Layer>(nullptr);
}
void LayerTreeHost::SetNeedsDisplayOnAllLayers() {
for (auto* layer : *this)
layer->SetNeedsDisplay();
}
void LayerTreeHost::SetHasCopyRequest(bool has_copy_request) {
has_copy_request_ = has_copy_request;
}
void LayerTreeHost::RequestBeginMainFrameNotExpected(bool new_state) {
proxy_->RequestBeginMainFrameNotExpected(new_state);
}
void LayerTreeHost::SetURLForUkm(const GURL& url) {
proxy_->SetURLForUkm(url);
}
void LayerTreeHost::SetRenderFrameObserver(
std::unique_ptr<RenderFrameMetadataObserver> observer) {
proxy_->SetRenderFrameObserver(std::move(observer));
}
} // namespace cc