Unreal Engine Issues
Unreal Engine Issues
Vertex color does not work on Skeletal Mesh with Nanite enabled
UE - Graphics Features - Nanite - Oct 7, 2025Nanite enabled skeletal meshes don't work with materials containing a vertex color node. The vertex color material does work for non-Nanite skeletal meshes and Nanite-enabled static meshes. ...
Failed to generate Nanite data for mesh with bDoFastBuild enabled
UE - Graphics Features - Nanite - Oct 1, 2025If "bDoFastBuild" is enabled on a Static Mesh asset, in-editor it will never be able to have Nanite data built for it, preventing the Static Mesh from using Nanite. There is no way to fix this issu ...
Seam visible when using a material with BumpOffset on a Nanite mesh
UE - Graphics Features - Nanite - Sep 18, 2025When a material that uses BumpOffset is fed into the Emissive Color of Surface Opaque Default Lit material and then applied to a nanite mesh, a visible seam can be seen along edges and the intersect ...
Nanite Skeletal Meshes Invalidate VSM
UE - Graphics Features - Nanite - Sep 17, 2025Nanite Skeletal Meshes will always invalidate VSMs, even with their Shadow Cache Invalidation Behavior set to Rigid. This does not match the behavior of non-Nanite Skeletal Meshes. ...
Nanite Mesh Dither Opacity Mask Not Working in 5.6.0
UE - Graphics Features - Nanite - Jul 30, 2025In Unreal Engine 5.5.4, the Dither Opacity Mask option in a Masked material works correctly on Nanite meshes. However, in version 5.6.0, the dithering effect no longer applies to Nanite meshes. ...
Virtual Bone caused nanite skinned mesh crash
UE - Graphics Features - Nanite - May 31, 2025When a Nanite skeletal mesh has a virtual bone the engine can crash when changing LODs ...
GPU Crash may occur when using Nanite Tesselation on landscape with several shadow casting local lights
UE - Graphics Features - Nanite - May 5, 2025The GPU may time out in NaniteSplit when drawing VSM shadows for Nanite Tessellated landscape with in a scene with several local shadowed point lights. The issue doesn't reproduce in 5.6, likely to ...
Nanite TwoSidedSign is backwards
UE - Graphics Features - Nanite - Apr 10, 2025The value of MaterialExpressionTwoSidedSign is flipped when calculating the Opacity Mask for Nanite meshes. This seems to be a regression in 5.5. ...
Masked material using virtual textures covering a decal will result in black pixels
UE - Graphics Features - Nanite - Mar 31, 2025Depth Passes for Masked Materials using Virtual Textures does not work correctly when it is in front of a Nanite Mesh and a Decal, resulting in black artifacts. Also tested on //UE5/Main, CL: 41024 ...
Duplicating SkeletalMesh in packaged game causes crash
UE - Graphics Features - Nanite - Mar 11, 2025This code worked until UE5.4. NaniteResource added in 5.5 causes this issue. ...