Chaos No Editor Development Build Errors

UE - Simulation - Physics - Sep 30, 2019

During run-time of a no editor development build using chaos, errors with GeometryCollectionDrawComponent are logged and Geometry Collections remain floating in the air, not fracturing as expected. ...

TeleportTo result with Chaos is different from PhysX

UE - Simulation - Physics - Jun 25, 2021

The result with Chaos is not wrong, rather it returns a correct correction vector, that vector is perfectly horizontal to the teleport buried against the landscape mesh. Therefore, teleportation wil ...

Failed assertion on creating a basic chaos geometry collection and PIE

UE - Simulation - Physics - Jan 23, 2020

User encounters a failed assertion when trying to create a simple geometry collection from a box ...

Reimporting an FBX causes invalid collision on Spline Mesh Components (Chaos)

UE - Editor - Content Pipeline - Import and Export - Nov 11, 2021

Reported in UDN: [Link Removed] Reimporting a static mesh asset from an FBX file causes collision to disappear on spline meshes referencing the static mesh asset. In investigating this in 4.27, I ...

Chaos Clothing CreateClothActor takes a long time with LODs and Self-Collision

UE - Simulation - Physics - Jan 21, 2024

Spawning an actor with Chaos cloth causes a hitch when LODs or Self-Collision are enabled on the cloth. LODs and Self-Collision seem to compound the issue. Self-Collision requires a collision simul ...

[Feature Request] Artists want "importing fbx chunks" functionality back in chaos fracture.

UE - Simulation - Physics - Destruction - Jun 11, 2021

Some artist customers want a tool to customize fractured mesh in chaos fracture just like the functionality "import fbx chunks" in APEX destruction, that could give them more controllability of the ...

Chaos Cloth - Visualization materials cause async load flush and slows down starting a PIE session.

UE - Simulation - Physics - Character - Aug 13, 2024

The loading of the cloth visualization materials disturbs async loads shortly after starting PIE which causes an async flush and several seconds stall. The solution would be to move these to a sing ...

Using Fracture/Chaos Destruction with TSR as Anti-Aliasing Method generates smeared images.

UE - Simulation - Physics - Destruction - Aug 15, 2024

Using Fracture/Chaos Destruction with TSR as Anti-Aliasing Method generates smeared images whenever the debris are moving. The client pointed out that the issue might come from GeometryCollectionCom ...

Chaos Vehicles - Wheel physics bounds staying in spawn location on server

UE - Simulation - Physics - Jun 9, 2023

Vehicle wheel shapes on the server appear to detach from the vehicle and remain at their spawn point when running a networked game. The clients physics representation is ok and as expected, i.e. whe ...

Opening a Niagara asset that references a disabled plugin (Chaos Niagara) can crash the editor

UE - Niagara - Jan 18, 2024

Opening a module with references to a disabled plugin can crash the editor.  ...