Vertex Animation anti-aliasing improvement

UE - Graphics Features - Jun 2, 2015

A licensee has reported that their vertex animations are leaving a lot of be desired with anti-aliasing. Specifically using vertex animated meshes can leave aliasing remnants behind while it's shift ...

FIndexedCurve::ScaleCurve returns invalid results

UE - Anim - Runtime - Feb 13, 2025

Calling SetKeyTime in iterating KeyHandlesToIndices array can modify the array order, so it breaks the iterator. Perhaps ShiftCurve also has the same problem. Here is a work around: void FIndexedCu ...

Data is not filled in for a Blueprint struct array contained within another Blueprint struct

UE - Gameplay - Blueprint - Mar 6, 2017

If a Blueprint struct contains a variable that is an array of another Blueprint struct, data in a datatable based on the first struct will not be correctly filled in for the struct array. If the str ...

Foliage is not partially loaded after InstancedFoliageGridSize is changed by WorldPartitionFoliageBuilder commandlet

UE - World Creation - Worldbuilding Tools - Foliage - May 27, 2022

Changing the InstancedFoliageGridSize by the WorldPartitionFoliageBuilder commandlet will cause some of the foliage to not load correctly. ...

Deferred and DBuffer Decals Normals are altered when adjusting the X Size/Scale

UE - Graphics Features - Dec 17, 2015

Adjusting the X Size of a Decal is causing the normals to distort [Image Removed] Reproduced in 4.11-Releases-CL-2804793 Reproduced in DevRendering-CL-2806984 ...

After closing PIE, Right click dragging is confined to the Viewport bounds

Tools - Oct 27, 2017

After holding any mouse button down and pressing escape to quit the game, using the right mouse button to move in the viewport locks it to the left and right bounds of the viewport. Sometimes moving ...

Unexpected Collision Response When Nesting Primitive Components with auto-weld enabled and physics disabled on children. The root primitive falls through floor even though it is set to block all.

UE - Simulation - Physics - May 27, 2025

Context Auto-weld makes it so if a child is attached to a parent, the two bodies will be joined into a single rigid body. Physic settings like collision profile and body settings are determined by t ...

Blueprints converted to static mesh with negative scales for a component will invert the faces

Tools - Dec 19, 2016

Negative scaled static mesh components in a blueprint will invert their faces when converted to a static mesh. Note that this does not happen in the following situations: If the BP is scaled negat ...