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fix a critical deadlock issue (UE-212224) in UE 5.5/5.6 during PipelinedFrameState acquisition

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This commit is contained in:
Mamadou Babaei
2025-05-09 16:35:43 +02:00
parent 56b84142c1
commit 5a5f155f05
2 changed files with 73 additions and 0 deletions
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Source/SenseGloveTracking/Private/SGTracking/SGXRTracker.cpp
+72
View File
@@ -35,6 +35,11 @@
#include "SGTracking/SGXRTracker.h"
#if ENGINE_MAJOR_VERSION >= 5 && ENGINE_MINOR_VERSION >= 5
#include "Async/Async.h"
#include "Async/Future.h"
#include "Async/TaskGraphInterfaces.h"
#endif /* ENGINE_MAJOR_VERSION >= 5 && ENGINE_MINOR_VERSION >= 5 */
#include "Containers/Array.h"
#include "Containers/Map.h"
#include "Engine/Engine.h"
@@ -46,6 +51,10 @@
#endif /* ENGINE_MAJOR_VERSION >= 5 && ENGINE_MINOR_VERSION >= 4 */
#include "IOpenXRHMDModule.h"
#include "IXRTrackingSystem.h"
#if ENGINE_MAJOR_VERSION >= 5 && ENGINE_MINOR_VERSION >= 5
#include "Misc/Optional.h"
#include "Misc/Timespan.h"
#endif /* ENGINE_MAJOR_VERSION >= 5 && ENGINE_MINOR_VERSION >= 5 */
#include "OpenXRCore.h"
#if ENGINE_MAJOR_VERSION >= 5 && ENGINE_MINOR_VERSION <= 3
#include "OpenXRHMD.h"
@@ -2204,6 +2213,7 @@ bool FSGXRTracker::FImpl::GetControllerTransform(
IMotionController::GetModularFeatureName())
};
#if ENGINE_MAJOR_VERSION >= 5 && ENGINE_MINOR_VERSION <= 4
for (const IMotionController* MotionController: MotionControllers)
{
if (!MotionController)
@@ -2237,6 +2247,68 @@ bool FSGXRTracker::FImpl::GetControllerTransform(
break;
}
}
#endif /* ENGINE_MAJOR_VERSION >= 5 && ENGINE_MINOR_VERSION <= 4 */
#if ENGINE_MAJOR_VERSION >= 5 && ENGINE_MINOR_VERSION >= 5
TPromise<TOptional<FTransform>> Promise;
const TFuture<TOptional<FTransform>> Future{Promise.GetFuture()};
AsyncTask(ENamedThreads::ActualRenderingThread,
[
this,
WorldToMetersScale,
&PositionalTrackingHardwareMotionSource,
&TargetPositionalTrackingProviderName,
MotionControllers,
Promise = MoveTemp(Promise)]() mutable
{
for (const IMotionController* MotionController: MotionControllers)
{
if (!MotionController)
{
continue;
}
const ETrackingStatus TrackingStatus = MotionController->GetControllerTrackingStatus(
DeviceIndex, PositionalTrackingHardwareMotionSource);
if (TrackingStatus == ETrackingStatus::NotTracked)
{
continue;
}
const FName DeviceTypeName{MotionController->GetMotionControllerDeviceTypeName()};
if (DeviceTypeName != TargetPositionalTrackingProviderName)
{
continue;
}
FRotator Orientation;
FVector Position;
const bool bGotTransform = MotionController->GetControllerOrientationAndPosition(
DeviceIndex, PositionalTrackingHardwareMotionSource,
Orientation, Position, WorldToMetersScale);
if (bGotTransform)
{
FTransform Transform{Orientation, Position};
Promise.SetValue(MoveTemp(Transform));
return;
}
}
Promise.SetValue(TOptional<FTransform>{});
});
if (Future.WaitFor(FTimespan::FromMilliseconds(100)))
{
TOptional<FTransform> Result{Future.Get()};
if (Result.IsSet())
{
OutTransform = Result.GetValue();
bOutMotionSourceHandTracking = false;
bTracked = true;
}
}
#endif /* ENGINE_MAJOR_VERSION >= 5 && ENGINE_MINOR_VERSION >= 5 */
}
if (!bTracked && bFallbackToHandTrackingIfNoGloveDetected)