Unreal Engine Issues
Unreal Engine Issues
.mp4s cannot be played in default projects in UE5.
UE - Media Framework - Apr 6, 2022In UE4 (using DX11), WmfMedia was able to play .mp4 files by default. However, WmfMedia doesn't support playing .mp4s in DX12, which is what is used in UE5. Electra can handle playing .mp4s in UE5, ...
Color shifting occurs from screen probe gather ping-pong when Lumen active
UE - Graphics Features - Lumen - Apr 29, 2024A subtle yellow tint color shift occurs when Lumen is active due to usage of R11G11B10_Float targets, mostly from r.Lumen.ScreenProbeGather.SpatialFilterProbes where we ping-pong between R11G11B10_F ...
Make warning about using collision and 'components space' in RigidBody node more visible
UE - Simulation - Physics - Feb 1, 2017In the RigidBody anim node, if the user enables collision while Component Space Simulation is enabled, there will be warnings in the output log saying:Warning Trying to use world collision with comp ...
When importing multiple meshes at once and change the Uniform Scale meshes import at different sizes
UE - Editor - Content Pipeline - Import and Export - Sep 21, 2017When a large quantity (about 50 in this case) are imported simultaneously, and the Import Uniform Scale is changed to any other number besides 1, random meshes differ in size. This happens regardles ...
GPU Lightmass ignores IES Profiles on Static Lights while building lighting
UE - Graphics Features - Jun 8, 2022This is a regression tested in //UE4/Release-4.27 CL#18319896 GPU Lightmass ignores IES Profiles on Static Lights while building lighting. Tested with different Global Illumination and Reflection s ...
[CrashReport] UE4Editor_CoreUObject!FUObjectArray::AllocateSerialNumber() [uobjectarray.cpp:307]
UE - Editor - Content Pipeline - Import and Export - Sep 20, 2017This is a somewhat common crash in 4.17. Users have not provided any descriptions of their actions when the crash occurred. Source Context 304 int32 FUObjectArray::AllocateSerialNumber(in ...
Enum with "MAX" element at other than the last element removes user defined last element
UE - Foundation - Core - Oct 18, 2019FNativeClassHeaderGenerator::ExportEnum produces this behavior. If an enum has “MAX” somewhere in the array, it removes last element. I tested my code to fix the issue.// code placeholder bool UE ...
Cloth paint update issues
UE - Simulation - Physics - Jan 7, 2020Activating and Deactivating Cloth Paint marks the skeletal mesh as dirty, even if no values were painted and there is no transaction in the Undo History. Painting Max Distance values from non-zero ...
Navigation System is gathering navigation bounds too early
UE - AI - Aug 6, 2015In GameInstance.cpp when the Navigation System is created it calls... UNavigationSystem::InitializeForWorld This in turn ends up calling... GatherNavigationBounds(); This goes through all ...
Imprecise Rotation Values produced in the Details Panel when using the Rotation Widget in the Viewport
Tools - Mar 29, 2016Starting with an asset (static mesh for instance) with a precise rotation value (such as a whole number) in the details panel will result in a imprecise, slightly fractional off value when rotated ...