CLONE - ShaderCacheTool build fails

UE - Graphics Features - Nov 20, 2017

In 4.18 and 4.19, it is no longer possible to build the ShaderCacheTool. REGRESSION: Yes. The ShaderCacheTool builds successfully in 4.17.2. It looks like the missing MergeShaderCacheFiles property ...

Particles: SetFloatParameter not always having an effect

UE - Graphics Features - Oct 7, 2015

A licensee is trying to use Distribution Float Particle Parameters for the Noise properties of a Beam Particle. When trying to change these parameters in a Blueprint, some work, others don't. When ...

Grandchildren of UDataAsset are not properly registered by the Asset Manager

UE - Gameplay - Sep 19, 2017

Any child class of UDataAsset (parent) will properly be picked up when the Asset Manager's Asset Base Class" field is set to the appropriate class. However a grandchild class (Child) with the same ...

Decal Fading parameters are completely broken

UE - Graphics Features - Sep 20, 2020

Bindless Virtual Textures are sampled with non-virtual samplers

UE - Rendering Architecture - Materials - Nov 28, 2024

Texture Collections can contain virtual textures. There is no way to inform TextureObjectFromCollection that the texture is virtual, only that it is a Texture2D. This texture object is then sampled ...

Components defaults not updating on hot reload

UE - Gameplay - Blueprint - Apr 11, 2017

Certain values, when changed in code, are not updated in a hot reload. For example, changing the Target Arm Length of a spring arm component will updated after hot reload, but changing the Scale do ...

Navigation: Exiting game while async nav building tasks are running can cause null pointer access of OctreeController.NavOctree from worker thread

UE - AI - Navigation - Nov 1, 2024

Context Projects can turn on the project setting bDoFullyAsyncNavDataGathering to execute navigation mesh building tasks on worker threads. Some of these tasks will access the NavOctree, whose life ...

Navigation: Exiting game while async nav building tasks are running can cause null pointer access of OctreeController.NavOctree from worker thread

UE - AI - Navigation - Jan 14, 2025

Context Projects can turn on the project setting bDoFullyAsyncNavDataGathering to execute navigation mesh building tasks on worker threads. Some of these tasks will access the NavOctree, whose life ...