72 lines
2.6 KiB
C++
72 lines
2.6 KiB
C++
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// @lint-ignore-every LICENSELINT
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// Copyright Epic Games, Inc. All Rights Reserved.
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#include "OculusXRHMD_DeferredDeletionQueue.h"
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#if OCULUS_HMD_SUPPORTED_PLATFORMS
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#include "OculusXRHMDPrivate.h"
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#include "XRThreadUtils.h"
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#include "OculusXRHMDModule.h"
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namespace OculusXRHMD
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{
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//-------------------------------------------------------------------------------------------------
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// FDeferredDeletionQueue
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//-------------------------------------------------------------------------------------------------
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uint32 GOculusXRHMDLayerDeletionFrameNumber = 0;
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const uint32 NUM_FRAMES_TO_WAIT_FOR_LAYER_DELETE = 3;
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const uint32 NUM_FRAMES_TO_WAIT_FOR_OVRP_LAYER_DELETE = 7;
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void FDeferredDeletionQueue::AddLayerToDeferredDeletionQueue(const FLayerPtr& ptr)
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{
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DeferredDeletionEntry Entry;
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Entry.Layer = ptr;
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Entry.FrameEnqueued = GOculusXRHMDLayerDeletionFrameNumber;
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Entry.EntryType = DeferredDeletionEntry::DeferredDeletionEntryType::Layer;
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DeferredDeletionArray.Add(Entry);
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}
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void FDeferredDeletionQueue::AddOVRPLayerToDeferredDeletionQueue(const uint32 layerID)
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{
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DeferredDeletionEntry Entry;
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Entry.OvrpLayerId = layerID;
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Entry.FrameEnqueued = GOculusXRHMDLayerDeletionFrameNumber;
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Entry.EntryType = DeferredDeletionEntry::DeferredDeletionEntryType::OvrpLayer;
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DeferredDeletionArray.Add(Entry);
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}
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void FDeferredDeletionQueue::HandleLayerDeferredDeletionQueue_RenderThread(bool bDeleteImmediately)
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{
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// Traverse list backwards so the swap switches to elements already tested
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for (int32 Index = DeferredDeletionArray.Num() - 1; Index >= 0; --Index)
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{
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DeferredDeletionEntry* Entry = &DeferredDeletionArray[Index];
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if (Entry->EntryType == DeferredDeletionEntry::DeferredDeletionEntryType::Layer)
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{
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if (bDeleteImmediately || GOculusXRHMDLayerDeletionFrameNumber > Entry->FrameEnqueued + NUM_FRAMES_TO_WAIT_FOR_LAYER_DELETE)
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{
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DeferredDeletionArray.RemoveAtSwap(Index, 1, false);
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}
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}
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else if (Entry->EntryType == DeferredDeletionEntry::DeferredDeletionEntryType::OvrpLayer)
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{
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if (bDeleteImmediately || GOculusXRHMDLayerDeletionFrameNumber > Entry->FrameEnqueued + NUM_FRAMES_TO_WAIT_FOR_OVRP_LAYER_DELETE)
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{
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ExecuteOnRHIThread_DoNotWait([OvrpLayerId = Entry->OvrpLayerId]() {
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UE_LOG(LogHMD, Warning, TEXT("Destroying layer %d"), OvrpLayerId);
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FOculusXRHMDModule::GetPluginWrapper().DestroyLayer(OvrpLayerId);
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});
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DeferredDeletionArray.RemoveAtSwap(Index, 1, false);
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}
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}
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}
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// if the function is to be called multiple times, move this increment somewhere unique!
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++GOculusXRHMDLayerDeletionFrameNumber;
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}
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} // namespace OculusXRHMD
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#endif //OCULUS_HMD_SUPPORTED_PLATFORMS
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