Infinite saving loop with material attributes and VT

UE - Rendering Architecture - Materials - Jun 12, 2024

UDN: [Link Removed] ...

Custom HLSL's IncludeFilePaths should be injected into MaterialTemplate.ush

UE - Rendering Architecture - Materials - Jun 10, 2024

udn: [Link Removed] This appears to only be an issue with SN_DBS. DBS calls a function to gather all shader includes, and any custom hlsl includes aren't discovered causing that file to not be cop ...

Can't set "r.Shaders.Optimize" to false in UE5.4

UE - Rendering Architecture - Shaders - Jun 7, 2024

The CVar "r.Shaders.Optimize" cannot be set to false from DefaultEngine.ini in the section "[ShaderCompiler]" as its help text describes. Also tested on UE5-Main, CL: 34200103 ...

Problem with material layers using interpolator nodes

UE - Rendering Architecture - Materials - Jun 7, 2024

The Vertex Interpolator Material Expression appears to collapse separate instances from separate Material Layers, leading to visual artifacts when used. Also tested on UE5_Main, CL: 34200103 ...

Case Child Actor Component validation error when set as editor-only

UE - Framework - Components - Jun 4, 2024

When a blueprint actor with a child actor component is placed in a level, and the child actor component is set as editor-only, the output log will show a validation error when the actor is moved and ...

Crash when exiting editor before EditorUtilityTask completes

UE - Editor - UI Systems - May 29, 2024

If exiting the editor before the EditorUtilityTask completes, it crashes. It will not crash if canceling the UtilityTask and then exit the editor. The following implementation does not allow destruc ...

Water body constructor dirties actor

UE - Graphics Tools - Terrain - Water - May 29, 2024

Modify gets called from AWaterBody constructor: WaterSplineMetadata->Reset(3); WaterSplineMetadata->AddPoint(0.0f); WaterSplineMetadata->AddPoint(1.0f); WaterSplineMetadata->AddPoint ...

UClass::SparseClassDataStruct null at editor-time for child blueprints until compile

UE - Framework - Blueprint - May 29, 2024

Child blueprints of a blueprint of a native actor class with sparse data can have an incorrectly null SparseClassDataStruct value, and thus fail to initialzie their SparseClassData. This affects edi ...

Async Physics incorrectly interpolates when multiple physics ticks pass

UE - Simulation - Physics - Solver - May 28, 2024

If a user set the transform of a Body from the game thread and physics is running multiple async ticks perf game tick, the transforms might be being calculated incorrectly. ...

Server will process moves from client with bReplicateMovement set to false

UE - Gameplay - Player Movement - May 28, 2024

UCharacterMovementComponent::ReplicateMoveToServer checks IsReplicatingMovement before sending moves to the server, but the server does not check IsReplicatingMovement when processing these received ...