Interpolators of Particle Dynamic Parameters Need "nointerpolation".

UE - Niagara - Aug 1, 2019

Regardless Niagara or Cascade, dynamic parameters for particles are passed to pixel shaders from vertex shaders via InterpolantsVSToPS. It can cause a precision error on some materials, for example ...

The packaged build of a project that has a strong pointer initialized to nullptr immediately closes on launch

UE - Foundation - Core - Aug 2, 2019

When a strong pointer is set to null the packaged build of the game will immediately close. No crash logs were were made and no Saved folder was made (<Project Name>/Saved/Logs). An example project ...

Deferred Decals Fade In With No Fade Duration Set

UE - Graphics Features - Aug 9, 2019

Decals fading in with Fade Duration set to zero. Found in 4.21 CL# 4753647, 4.22 CL# 7053642, 4.23 Preview 5 CL# 7838574 ...

LandscapeComponent generates incorrect OccluderVertices for software occlusion

UE - LD & Modeling - Terrain - Landscape - Sep 17, 2019

OccluderVertices didn't consider the subsection's transition, so the position of the OcclusderVertices are not correct. I made a fix as follows: [Image Removed] [Image Removed] ...

[CrashReport] UE4Editor_Engine!CropRawTrack() [animsequence.cpp:1798]

OLD - Anim - Dec 14, 2018

Comment from user in crash groupTried to delete frames in an animation ...

The Rotate Around Point Niagara module does not account for current particle position

UE - Niagara - Oct 16, 2019

The rotate around point module no longer adds in particle position, so it does not account for other forces and modules effecting the particles, and will only spin in a circle by default. The user c ...

Crash in a packaged project when loading into a level after a nativized Anim BP grabs a PoseSnapshot using a FName

OLD - Anim - Oct 25, 2019

In packaged projects will crash when an animation blueprint that is nativized loads into a new level. The anim blueprint needs to use the PoseSnapshot node with a FName variable passed before loadin ...

D3D12RHI keeps increasing uniform buffer memory with "stat RHI"

UE - Rendering Architecture - RHI - Oct 25, 2019

If any skeletal meshes are not displayed, it stops increasing. Allocation count of uniform buffer is stable. added on February 26 Followings are an additional information from licensee. FD3D12 ...

Editor Shortcuts stop working if the editor is launched with a non-Latin-based language

Tools - Nov 4, 2019

Editor shortcuts will not work if you launch the editor with a non-Latin-based language (ex. Russian, Chinese).  The editor must be closed and restarted with English (or possibly any Latin alphabet- ...

Windowed fullscreen doesn't respect vsync settings

UE - Rendering Architecture - RHI - Oct 31, 2019

When running in windowed fullscreen mode in a standalone build r.vsync 0 is not respected and the game always runs at a locked 60fps. When the game doesn't have focus, for instance when you press Wi ...