// Copyright 2014 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 "components/viz/service/display/display.h" #include #include #include "base/metrics/histogram_macros.h" #include "base/numerics/checked_math.h" #include "base/timer/elapsed_timer.h" #include "base/trace_event/trace_event.h" #include "cc/base/math_util.h" #include "cc/base/simple_enclosed_region.h" #include "cc/benchmarks/benchmark_instrumentation.h" #include "components/viz/common/display/renderer_settings.h" #include "components/viz/common/frame_sinks/begin_frame_source.h" #include "components/viz/common/quads/compositor_frame.h" #include "components/viz/common/quads/draw_quad.h" #include "components/viz/common/quads/shared_quad_state.h" #include "components/viz/service/display/direct_renderer.h" #include "components/viz/service/display/display_client.h" #include "components/viz/service/display/display_scheduler.h" #include "components/viz/service/display/gl_renderer.h" #include "components/viz/service/display/output_surface.h" #include "components/viz/service/display/skia_output_surface.h" #include "components/viz/service/display/skia_renderer.h" #include "components/viz/service/display/software_renderer.h" #include "components/viz/service/display/surface_aggregator.h" #include "components/viz/service/surfaces/surface.h" #include "components/viz/service/surfaces/surface_manager.h" #include "gpu/command_buffer/client/gles2_interface.h" #include "gpu/vulkan/buildflags.h" #include "services/viz/public/interfaces/compositing/compositor_frame_sink.mojom.h" #include "ui/gfx/buffer_types.h" #include "ui/gfx/geometry/rect_conversions.h" #include "ui/gfx/presentation_feedback.h" namespace viz { Display::Display( SharedBitmapManager* bitmap_manager, const RendererSettings& settings, const FrameSinkId& frame_sink_id, std::unique_ptr output_surface, std::unique_ptr scheduler, scoped_refptr current_task_runner, SkiaOutputSurface* skia_output_surface) : bitmap_manager_(bitmap_manager), settings_(settings), frame_sink_id_(frame_sink_id), skia_output_surface_(skia_output_surface), output_surface_(std::move(output_surface)), scheduler_(std::move(scheduler)), current_task_runner_(std::move(current_task_runner)) { DCHECK(output_surface_); DCHECK(frame_sink_id_.is_valid()); if (scheduler_) scheduler_->SetClient(this); } Display::~Display() { for (auto& observer : observers_) observer.OnDisplayDestroyed(); observers_.Clear(); for (auto& callback_list : pending_presented_callbacks_) { for (auto& callback : callback_list) std::move(callback).Run(gfx::PresentationFeedback::Failure()); } // Only do this if Initialize() happened. if (client_) { if (auto* context = output_surface_->context_provider()) context->RemoveObserver(this); if (scheduler_) surface_manager_->RemoveObserver(scheduler_.get()); } if (aggregator_) { for (const auto& id_entry : aggregator_->previous_contained_surfaces()) { Surface* surface = surface_manager_->GetSurfaceForId(id_entry.first); if (surface) surface->RunDrawCallback(); } } } void Display::Initialize(DisplayClient* client, SurfaceManager* surface_manager) { DCHECK(client); DCHECK(surface_manager); client_ = client; surface_manager_ = surface_manager; if (scheduler_) surface_manager_->AddObserver(scheduler_.get()); output_surface_->BindToClient(this); if (output_surface_->software_device()) output_surface_->software_device()->BindToClient(this); InitializeRenderer(); // This depends on assumptions that Display::Initialize will happen on the // same callstack as the ContextProvider being created/initialized or else // it could miss a callback before setting this. if (auto* context = output_surface_->context_provider()) context->AddObserver(this); } void Display::AddObserver(DisplayObserver* observer) { observers_.AddObserver(observer); } void Display::RemoveObserver(DisplayObserver* observer) { observers_.RemoveObserver(observer); } void Display::SetLocalSurfaceId(const LocalSurfaceId& id, float device_scale_factor) { if (current_surface_id_.local_surface_id() == id && device_scale_factor_ == device_scale_factor) { return; } TRACE_EVENT0("viz", "Display::SetSurfaceId"); current_surface_id_ = SurfaceId(frame_sink_id_, id); device_scale_factor_ = device_scale_factor; UpdateRootSurfaceResourcesLocked(); if (scheduler_) scheduler_->SetNewRootSurface(current_surface_id_); } void Display::SetVisible(bool visible) { TRACE_EVENT1("viz", "Display::SetVisible", "visible", visible); if (renderer_) renderer_->SetVisible(visible); if (scheduler_) scheduler_->SetVisible(visible); visible_ = visible; if (!visible) { // Damage tracker needs a full reset as renderer resources are dropped when // not visible. if (aggregator_ && current_surface_id_.is_valid()) aggregator_->SetFullDamageForSurface(current_surface_id_); } } void Display::Resize(const gfx::Size& size) { if (size == current_surface_size_) return; TRACE_EVENT0("viz", "Display::Resize"); // Need to ensure all pending swaps have executed before the window is // resized, or D3D11 will scale the swap output. if (settings_.finish_rendering_on_resize) { if (!swapped_since_resize_ && scheduler_) scheduler_->ForceImmediateSwapIfPossible(); if (swapped_since_resize_ && output_surface_ && output_surface_->context_provider()) output_surface_->context_provider()->ContextGL()->ShallowFinishCHROMIUM(); } swapped_since_resize_ = false; current_surface_size_ = size; if (scheduler_) scheduler_->DisplayResized(); } void Display::SetColorMatrix(const SkMatrix44& matrix) { if (output_surface_) output_surface_->set_color_matrix(matrix); // Force a redraw. if (aggregator_) { if (current_surface_id_.is_valid()) aggregator_->SetFullDamageForSurface(current_surface_id_); } if (scheduler_) { BeginFrameAck ack; ack.has_damage = true; scheduler_->ProcessSurfaceDamage(current_surface_id_, ack, true); } } void Display::SetColorSpace(const gfx::ColorSpace& blending_color_space, const gfx::ColorSpace& device_color_space) { blending_color_space_ = blending_color_space; device_color_space_ = device_color_space; if (aggregator_) { aggregator_->SetOutputColorSpace(blending_color_space, device_color_space_); } } void Display::SetOutputIsSecure(bool secure) { if (secure == output_is_secure_) return; output_is_secure_ = secure; if (aggregator_) { aggregator_->set_output_is_secure(secure); // Force a redraw. if (current_surface_id_.is_valid()) aggregator_->SetFullDamageForSurface(current_surface_id_); } } void Display::InitializeRenderer() { auto mode = output_surface_->context_provider() || skia_output_surface_ ? DisplayResourceProvider::kGpu : DisplayResourceProvider::kSoftware; resource_provider_ = std::make_unique( mode, output_surface_->context_provider(), bitmap_manager_); if (settings_.use_skia_renderer && mode == DisplayResourceProvider::kGpu) { // Check the compositing mode, because SkiaRenderer only works with GPU // compositing. DCHECK(output_surface_); renderer_ = std::make_unique( &settings_, output_surface_.get(), resource_provider_.get(), skia_output_surface_); } else if (output_surface_->context_provider()) { renderer_ = std::make_unique(&settings_, output_surface_.get(), resource_provider_.get(), current_task_runner_); #if BUILDFLAG(ENABLE_VULKAN) } else if (output_surface_->vulkan_context_provider()) { renderer_ = std::make_unique( &settings_, output_surface_.get(), resource_provider_.get(), nullptr /* skia_output_surface */); #endif } else { auto renderer = std::make_unique( &settings_, output_surface_.get(), resource_provider_.get()); software_renderer_ = renderer.get(); renderer_ = std::move(renderer); } renderer_->Initialize(); renderer_->SetVisible(visible_); // TODO(jbauman): Outputting an incomplete quad list doesn't work when using // overlays. bool output_partial_list = renderer_->use_partial_swap() && !output_surface_->GetOverlayCandidateValidator(); aggregator_.reset(new SurfaceAggregator( surface_manager_, resource_provider_.get(), output_partial_list)); aggregator_->set_output_is_secure(output_is_secure_); aggregator_->SetOutputColorSpace(blending_color_space_, device_color_space_); } void Display::UpdateRootSurfaceResourcesLocked() { Surface* surface = surface_manager_->GetSurfaceForId(current_surface_id_); bool root_surface_resources_locked = !surface || !surface->HasActiveFrame(); if (scheduler_) scheduler_->SetRootSurfaceResourcesLocked(root_surface_resources_locked); } void Display::OnContextLost() { if (scheduler_) scheduler_->OutputSurfaceLost(); // WARNING: The client may delete the Display in this method call. Do not // make any additional references to members after this call. client_->DisplayOutputSurfaceLost(); } bool Display::DrawAndSwap() { TRACE_EVENT0("viz", "Display::DrawAndSwap"); if (!current_surface_id_.is_valid()) { TRACE_EVENT_INSTANT0("viz", "No root surface.", TRACE_EVENT_SCOPE_THREAD); return false; } if (!output_surface_) { TRACE_EVENT_INSTANT0("viz", "No output surface", TRACE_EVENT_SCOPE_THREAD); return false; } base::ElapsedTimer aggregate_timer; CompositorFrame frame = aggregator_->Aggregate( current_surface_id_, scheduler_ ? scheduler_->current_frame_display_time() : base::TimeTicks::Now()); UMA_HISTOGRAM_COUNTS_1M("Compositing.SurfaceAggregator.AggregateUs", aggregate_timer.Elapsed().InMicroseconds()); if (frame.render_pass_list.empty()) { TRACE_EVENT_INSTANT0("viz", "Empty aggregated frame.", TRACE_EVENT_SCOPE_THREAD); return false; } // Run callbacks early to allow pipelining and collect presented callbacks. for (const auto& surface_id : surfaces_to_ack_on_next_draw_) { Surface* surface = surface_manager_->GetSurfaceForId(surface_id); if (surface) surface->RunDrawCallback(); } surfaces_to_ack_on_next_draw_.clear(); frame.metadata.latency_info.insert(frame.metadata.latency_info.end(), stored_latency_info_.begin(), stored_latency_info_.end()); stored_latency_info_.clear(); bool have_copy_requests = false; size_t total_quad_count = 0; for (const auto& pass : frame.render_pass_list) { have_copy_requests |= !pass->copy_requests.empty(); total_quad_count += pass->quad_list.size(); } UMA_HISTOGRAM_COUNTS_1000("Compositing.Display.Draw.Quads", total_quad_count); gfx::Size surface_size; bool have_damage = false; auto& last_render_pass = *frame.render_pass_list.back(); if (settings_.auto_resize_output_surface && last_render_pass.output_rect.size() != current_surface_size_ && last_render_pass.damage_rect == last_render_pass.output_rect && !current_surface_size_.IsEmpty()) { // Resize the output rect to the current surface size so that we won't // skip the draw and so that the GL swap won't stretch the output. last_render_pass.output_rect.set_size(current_surface_size_); last_render_pass.damage_rect = last_render_pass.output_rect; } surface_size = last_render_pass.output_rect.size(); have_damage = !last_render_pass.damage_rect.size().IsEmpty(); bool size_matches = surface_size == current_surface_size_; if (!size_matches) TRACE_EVENT_INSTANT0("viz", "Size mismatch.", TRACE_EVENT_SCOPE_THREAD); bool should_draw = have_copy_requests || (have_damage && size_matches); client_->DisplayWillDrawAndSwap(should_draw, frame.render_pass_list); if (should_draw) { if (settings_.enable_draw_occlusion) { base::ElapsedTimer draw_occlusion_timer; RemoveOverdrawQuads(&frame); UMA_HISTOGRAM_COUNTS_1000( "Compositing.Display.Draw.Occlusion.Calculation.Time", draw_occlusion_timer.Elapsed().InMicroseconds()); } bool disable_image_filtering = frame.metadata.is_resourceless_software_draw_with_scroll_or_animation; if (software_renderer_) { software_renderer_->SetDisablePictureQuadImageFiltering( disable_image_filtering); } else { // This should only be set for software draws in synchronous compositor. DCHECK(!disable_image_filtering); } base::ElapsedTimer draw_timer; renderer_->DecideRenderPassAllocationsForFrame(frame.render_pass_list); renderer_->DrawFrame(&frame.render_pass_list, device_scale_factor_, current_surface_size_); if (software_renderer_) { UMA_HISTOGRAM_COUNTS_1M("Compositing.DirectRenderer.Software.DrawFrameUs", draw_timer.Elapsed().InMicroseconds()); } else { UMA_HISTOGRAM_COUNTS_1M("Compositing.DirectRenderer.GL.DrawFrameUs", draw_timer.Elapsed().InMicroseconds()); } } else { TRACE_EVENT_INSTANT0("viz", "Draw skipped.", TRACE_EVENT_SCOPE_THREAD); } bool should_swap = should_draw && size_matches; if (should_swap) { swapped_since_resize_ = true; if (scheduler_) { frame.metadata.latency_info.emplace_back(ui::SourceEventType::FRAME); frame.metadata.latency_info.back().AddLatencyNumberWithTimestamp( ui::LATENCY_BEGIN_FRAME_DISPLAY_COMPOSITOR_COMPONENT, scheduler_->current_frame_time(), 1); } std::vector callbacks; for (const auto& id_entry : aggregator_->previous_contained_surfaces()) { Surface* surface = surface_manager_->GetSurfaceForId(id_entry.first); Surface::PresentedCallback callback; if (surface && surface->TakePresentedCallback(&callback)) { callbacks.emplace_back(std::move(callback)); } } bool need_presentation_feedback = !callbacks.empty(); if (need_presentation_feedback) pending_presented_callbacks_.emplace_back(std::move(callbacks)); ui::LatencyInfo::TraceIntermediateFlowEvents(frame.metadata.latency_info, "Display::DrawAndSwap"); cc::benchmark_instrumentation::IssueDisplayRenderingStatsEvent(); renderer_->SwapBuffers(std::move(frame.metadata.latency_info), need_presentation_feedback); if (scheduler_) scheduler_->DidSwapBuffers(); } else { TRACE_EVENT_INSTANT0("viz", "Swap skipped.", TRACE_EVENT_SCOPE_THREAD); if (have_damage && !size_matches) aggregator_->SetFullDamageForSurface(current_surface_id_); if (have_damage) { // Do not store more than the allowed size. if (ui::LatencyInfo::Verify(frame.metadata.latency_info, "Display::DrawAndSwap")) { stored_latency_info_.swap(frame.metadata.latency_info); } } else { // There was no damage. Terminate the latency info objects. while (!frame.metadata.latency_info.empty()) { auto& latency = frame.metadata.latency_info.back(); latency.Terminate(); frame.metadata.latency_info.pop_back(); } } if (scheduler_) { scheduler_->DidSwapBuffers(); scheduler_->DidReceiveSwapBuffersAck(); } } client_->DisplayDidDrawAndSwap(); // Garbage collection can lead to sync IPCs to the GPU service to verify sync // tokens. We defer garbage collection until the end of DrawAndSwap to avoid // stalling the critical path for compositing. surface_manager_->GarbageCollectSurfaces(); return true; } void Display::DidReceiveSwapBuffersAck() { if (scheduler_) scheduler_->DidReceiveSwapBuffersAck(); if (renderer_) renderer_->SwapBuffersComplete(); } void Display::DidReceiveTextureInUseResponses( const gpu::TextureInUseResponses& responses) { if (renderer_) renderer_->DidReceiveTextureInUseResponses(responses); } void Display::DidReceiveCALayerParams( const gfx::CALayerParams& ca_layer_params) { if (client_) client_->DisplayDidReceiveCALayerParams(ca_layer_params); } void Display::DidSwapWithSize(const gfx::Size& pixel_size) { if (client_) client_->DisplayDidCompleteSwapWithSize(pixel_size); } void Display::DidReceivePresentationFeedback( const gfx::PresentationFeedback& feedback) { DCHECK(!pending_presented_callbacks_.empty()); auto& callbacks = pending_presented_callbacks_.front(); for (auto& callback : callbacks) { std::move(callback).Run(feedback); } pending_presented_callbacks_.pop_front(); } void Display::DidFinishLatencyInfo( const std::vector& latency_info) { } void Display::SetNeedsRedrawRect(const gfx::Rect& damage_rect) { aggregator_->SetFullDamageForSurface(current_surface_id_); if (scheduler_) { BeginFrameAck ack; ack.has_damage = true; scheduler_->ProcessSurfaceDamage(current_surface_id_, ack, true); } } bool Display::SurfaceDamaged(const SurfaceId& surface_id, const BeginFrameAck& ack) { if (!ack.has_damage) return false; bool display_damaged = false; if (aggregator_) { display_damaged |= aggregator_->NotifySurfaceDamageAndCheckForDisplayDamage(surface_id); } if (surface_id == current_surface_id_) { display_damaged = true; UpdateRootSurfaceResourcesLocked(); } if (display_damaged) surfaces_to_ack_on_next_draw_.push_back(surface_id); return display_damaged; } void Display::SurfaceDiscarded(const SurfaceId& surface_id) { TRACE_EVENT0("viz", "Display::SurfaceDiscarded"); if (aggregator_) aggregator_->ReleaseResources(surface_id); } bool Display::SurfaceHasUndrawnFrame(const SurfaceId& surface_id) const { if (!surface_manager_) return false; Surface* surface = surface_manager_->GetSurfaceForId(surface_id); if (!surface) return false; return surface->HasUndrawnActiveFrame(); } void Display::DidFinishFrame(const BeginFrameAck& ack) { for (auto& observer : observers_) observer.OnDisplayDidFinishFrame(ack); } const SurfaceId& Display::CurrentSurfaceId() { return current_surface_id_; } LocalSurfaceId Display::GetSurfaceAtAggregation( const FrameSinkId& frame_sink_id) const { if (!aggregator_) return LocalSurfaceId(); auto it = aggregator_->previous_contained_frame_sinks().find(frame_sink_id); if (it == aggregator_->previous_contained_frame_sinks().end()) return LocalSurfaceId(); return it->second; } void Display::SoftwareDeviceUpdatedCALayerParams( const gfx::CALayerParams& ca_layer_params) { if (client_) client_->DisplayDidReceiveCALayerParams(ca_layer_params); } void Display::ForceImmediateDrawAndSwapIfPossible() { if (scheduler_) scheduler_->ForceImmediateSwapIfPossible(); } void Display::SetNeedsOneBeginFrame() { if (scheduler_) scheduler_->SetNeedsOneBeginFrame(); } void Display::RemoveOverdrawQuads(CompositorFrame* frame) { if (frame->render_pass_list.empty()) return; const SharedQuadState* last_sqs = nullptr; cc::SimpleEnclosedRegion occlusion_in_target_space; bool current_sqs_intersects_occlusion = false; int minimum_draw_occlusion_height = settings_.kMinimumDrawOcclusionSize.height() * device_scale_factor_; int minimum_draw_occlusion_width = settings_.kMinimumDrawOcclusionSize.width() * device_scale_factor_; // Total quad area to be drawn on screen before applying draw occlusion. base::CheckedNumeric total_quad_area_shown_wo_occlusion_px = 0; // Total area not draw skipped by draw occlusion. base::CheckedNumeric total_area_saved_in_px = 0; for (const auto& pass : frame->render_pass_list) { // TODO(yiyix): Add filter effects to draw occlusion calculation and perform // draw occlusion on render pass. if (!pass->filters.IsEmpty() || !pass->background_filters.IsEmpty()) { for (auto* const quad : pass->quad_list) { total_quad_area_shown_wo_occlusion_px += quad->visible_rect.size().GetCheckedArea(); } continue; } // TODO(yiyix): Perform draw occlusion inside the render pass with // transparent background. if (pass != frame->render_pass_list.back()) { for (auto* const quad : pass->quad_list) { total_quad_area_shown_wo_occlusion_px += quad->visible_rect.size().GetCheckedArea(); } continue; } auto quad_list_end = pass->quad_list.end(); gfx::Rect occlusion_in_quad_content_space; for (auto quad = pass->quad_list.begin(); quad != quad_list_end;) { total_quad_area_shown_wo_occlusion_px += quad->visible_rect.size().GetCheckedArea(); // Skip quad if it is a RenderPassDrawQuad because RenderPassDrawQuad is a // special type of DrawQuad where the visible_rect of shared quad state is // not entirely covered by draw quads in it; or the DrawQuad size is // smaller than the kMinimumDrawOcclusionSize; or the DrawQuad is inside // a 3d objects. if (quad->material == ContentDrawQuadBase::Material::RENDER_PASS || (quad->visible_rect.width() <= minimum_draw_occlusion_width && quad->visible_rect.height() <= minimum_draw_occlusion_height) || quad->shared_quad_state->sorting_context_id != 0) { ++quad; continue; } if (!last_sqs) last_sqs = quad->shared_quad_state; gfx::Transform transform = quad->shared_quad_state->quad_to_target_transform; // TODO(yiyix): Find a rect interior to each transformed quad. if (last_sqs != quad->shared_quad_state) { if (last_sqs->opacity == 1 && last_sqs->are_contents_opaque && last_sqs->quad_to_target_transform.Preserves2dAxisAlignment()) { gfx::Rect sqs_rect_in_target = cc::MathUtil::MapEnclosedRectWith2dAxisAlignedTransform( last_sqs->quad_to_target_transform, last_sqs->visible_quad_layer_rect); if (last_sqs->is_clipped) sqs_rect_in_target.Intersect(last_sqs->clip_rect); occlusion_in_target_space.Union(sqs_rect_in_target); } // If the visible_rect of the current shared quad state does not // intersect with the occlusion rect, we can skip draw occlusion checks // for quads in the current SharedQuadState. last_sqs = quad->shared_quad_state; current_sqs_intersects_occlusion = occlusion_in_target_space.Intersects( cc::MathUtil::MapEnclosingClippedRect( transform, last_sqs->visible_quad_layer_rect)); // Compute the occlusion region in the quad content space for scale and // translation transforms. Note that 0 scale transform will fail the // positive scale check. if (current_sqs_intersects_occlusion && transform.IsPositiveScaleOrTranslation()) { gfx::Transform reverse_transform; bool is_invertible = transform.GetInverse(&reverse_transform); // Scale transform can be inverted by multiplying 1/scale (given // scale > 0) and translation transform can be inverted by applying // the reversed directional translation. Therefore, |transform| is // always invertible. DCHECK(is_invertible); // TODO(yiyix): Make |occlusion_coordinate_space| to work with // occlusion region consists multiple rect. DCHECK_EQ(occlusion_in_target_space.GetRegionComplexity(), 1u); // Since transform can only be a scale or a translation matrix, it is // safe to use function MapEnclosedRectWith2dAxisAlignedTransform to // define occluded region in the quad content space with inverted // transform. occlusion_in_quad_content_space = cc::MathUtil::MapEnclosedRectWith2dAxisAlignedTransform( reverse_transform, occlusion_in_target_space.bounds()); } else { occlusion_in_quad_content_space = gfx::Rect(); } } if (!current_sqs_intersects_occlusion) { ++quad; continue; } if (occlusion_in_quad_content_space.Contains(quad->visible_rect)) { // Case 1: for simple transforms (scale or translation), define the // occlusion region in the quad content space. If the |quad| is not // shown on the screen, then remove |quad| from the compositor frame. total_area_saved_in_px += quad->visible_rect.size().GetCheckedArea(); quad = pass->quad_list.EraseAndInvalidateAllPointers(quad); } else if (occlusion_in_quad_content_space.Intersects( quad->visible_rect)) { // Case 2: for simple transforms, if the quad is partially shown on // screen and the region formed by (occlusion region - visible_rect) is // a rect, then update visible_rect to the resulting rect. gfx::Rect origin_rect = quad->visible_rect; quad->visible_rect.Subtract(occlusion_in_quad_content_space); if (origin_rect != quad->visible_rect) { origin_rect.Subtract(quad->visible_rect); total_area_saved_in_px += origin_rect.size().GetCheckedArea(); } ++quad; } else if (occlusion_in_quad_content_space.IsEmpty() && occlusion_in_target_space.Contains( cc::MathUtil::MapEnclosingClippedRect( transform, quad->visible_rect))) { // Case 3: for non simple transforms, define the occlusion region in // target space. If the |quad| is not shown on the screen, then remove // |quad| from the compositor frame. total_area_saved_in_px += quad->visible_rect.size().GetCheckedArea(); quad = pass->quad_list.EraseAndInvalidateAllPointers(quad); } else { ++quad; } } } UMA_HISTOGRAM_PERCENTAGE( "Compositing.Display.Draw.Occlusion.Percentage.Saved", total_quad_area_shown_wo_occlusion_px.ValueOrDefault(0) == 0 ? 0 : static_cast(total_area_saved_in_px.ValueOrDie()) * 100 / static_cast( total_quad_area_shown_wo_occlusion_px.ValueOrDie())); UMA_HISTOGRAM_COUNTS_1M( "Compositing.Display.Draw.Occlusion.Drawing.Area.Saved2", static_cast(total_area_saved_in_px.ValueOrDefault( std::numeric_limits::max()))); } } // namespace viz