Unreal Engine Issues
Unreal Engine Issues
Landscape Grass renders offset from Landscapes
UE - World Creation - Worldbuilding Tools - Foliage - Mar 24, 2020Foliage spawned from Landscape Materials is rendering offset from the Landscape the material is applied to. I can reproduce this issue with or without Edit Layers enabled. I'm unable to reproduce ...
SetStaticMesh does not replicate
UE - Networking - Jun 2, 2015Using OnRep_StaticMesh() in code or using the Set Static Mesh node does not replicate across server/client in game. ...
Crash: Direct3DDevice->CreateBuffer failed at D3D11VertexBuffer.cpp with error E_INVALIDARG
UE - Graphics Features - Jul 6, 2017This is a common crash affecting users since at least the 4.14 release. It was previously associated with [Link Removed], however that has been marked as fixed. Source Context 221 void Veri ...
[CrashReport] UE4Editor_ClassViewer!TBaseMulticastDelegate<void>::RemoveDelegateInstance() [delegatesignatureimpl.inl:970]
Tools - Jul 14, 2017This is a common crash affecting users on Windows and Linux. It also appears related to an older Mac crash ([Link Removed]). Users have not provided any new descriptions. Source Context 959 ...
[CrashReport] UE4Editor_CoreUObject!FMemoryWriter::Serialize() [memorywriter.h:42]
UE - Foundation - Core - Jul 24, 2017This is a common cook crash affecting users in 4.16. It is possibly the same issue as described in [Link Removed] for past engine versions. Source Context 33 virtual void Serialize(void* ...
Hitting S while Alt + Dragging a BSP and then Stopping PIE will crash the editor
Tools - Mar 1, 2015Hitting S while Alt + Dragging a BSP and then Stopping PIE will crash the editor. Reproduced in 4.7.1 binary and Main (//depot/UE4/Promotable-CL-2455917) Crash Report: [Link Removed] Call Stack:< ...
Gradual drop in Performance on Windows 10 projects after Toggling Fullscreen
Tools - Nov 30, 2015It seems that when working in any project on a Windows 10 machine, there is a gradual rise in frames per second and a consistent drop in performance. The user reporting this issue claims his frame ...
Data loss caused by C++ Child Actor Component when compiling Child BP
UE - Gameplay - Blueprint - Dec 22, 2016Having Child Actor Components that are set in code can cause data loss upon compiling the blueprint. In this particular scenario, there are two custom Actor classes involved, MainActor and SubActo ...
Null Material Layers in Material Instances cause Opacity Mask and WPO to break on Nanite Meshes
UE - Rendering Architecture - Materials - Oct 31, 2024When a Material Instance is loaded that has a nullptr layer in StaticParametrs.Materiallayers. The Material Instance will create it's own CachedExpressionData but the ConnectedParameterMask will be ...
Duplicated TextureLoadVirtualPageTable in GetCustomData functions in generated HLSL add to the total instruction count due to TextureLoad having side effects
UE - Rendering Architecture - Materials - Dec 4, 2024When using materials with CustomData inputs, such as the Eye material with Iris Distance and Mask, Virtual Texture samples will increase the instruction count for each unique VTPageResult. Each cus ...