Unreal Engine Issues
Unreal Engine Issues
Material Compile Error [SM5]
UE - Graphics Features - Jun 8, 2016There is an material compile error when using a TexCoord node shared between two Texture samples. The user provided a number of ways to work around the issue, but this issue becomes more problemati ...
Distance Field AO not Rendering in VR
UE - Platform - XR - Mar 24, 2017Distance Field Ambient Occlusion does not render in VR. I mentioned to the user reporting this issue, that using DFAO is more than likely disabled by default due to the baseline cost of using the ' ...
UKismetArrayLibrary::GenericArray_Shuffle is weighted to return some results more than others
UE - Gameplay - Aug 15, 2017The implementation of UKismetArrayLibrary::GenericArray_Shuffle() will generate certain array shuffle results more often (up to three times as much) than others, rather than having a roughly equal c ...
Volume EncompassesPoint is broken in Chaos
UE - Simulation - Physics - Oct 26, 2020While investigating an issue with Cull Distance Volumes, I noticed that AVolume::EncompassesPoint has a broken default implementation when WITH_PHYSX is not defined. If only chaos is enabled it will ...
Descriptions for vis log shapes in the Rewind Debugger are misaligned
UE - AI - Debugging - Mar 25, 2025When recording shape information, descriptions are offset from the shape. Licensee Message - I noticed that the capsule vis log description labels were not lining up after replaying the recording ...
[Feature Request] FWebBrowserWindow::UnbindUObject of IOSPlatformWebBrowser.cpp is not implemented yet
UE - Platform - Mobile - May 23, 2018FWebBrowserWindow::UnbindUObject on iOS is not implemented yet. IOSPlatformWebBrowser void FWebBrowserWindow::BindUObject(const FString& Name, UObject* Object, bool bIsPermanent /*= true*/) { } ...
Crash in FMaterialUtilities::CreateFlattenMaterialInstance when building Simplified HLOD layer
UE - World Creation - Worldbuilding Tools - HLOD - Aug 17, 2022From licensee: The issue here starts in FVoxelizeMeshMerging::ProxyLOD() where the FlattenMaterial created using FMaterialUtilities::CreateFlattenMaterialWithSettings() returns an empty struct. I d ...
USceneComponent::PropagateTransformUpdate could avoid calls to MarkRenderTransformDirty when transform does not change
UE - Gameplay - Nov 16, 2016From the UDN: "In USceneComponent::PropagateTransformUpdate, even when Transform has not changed, Bounds are updated and MarkRenderTransformDirty is called. I think that judging whether Bounds have ...
[CrashReport] FGraphActionNode::~FGraphActionNode()
UE - Rendering Architecture - Materials - Sep 28, 2017This is a trending crash coming out of the 4.18 Previews. User Descriptionstrying to use media framework in mpseemingly random crashes, mostly when interacting with blueprint editorctrl drag float ...
PSO Creation hangs on task in Shipping build
UE - Rendering Architecture - RHI - Nov 27, 2023Running with `r.AsyncPipelineCompile=0` causes the issue not to happen. It fails to open about 4 times out of 5. No such problem in development build., it always succeeds. We noticed that if we de ...