World Partition HLODs creation for Spline Meshes

Development World Creation
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1

I am looking for a way to generate HLODs in WP for spline meshes (ie: A spline mesh street or periodic lamps generated for each point of the spline) but when building all levels, no hlod is generated. Is there a way to achieve this result without merging spline actor to a mesh?

2

There is a problem when converting the spline mesh to HLOD, it is best to convert it to static mesh if you want it to be visible in the HLOD.

3

To generate HLODs for spline meshes in Unreal Engine without merging them into a single mesh, you can:

  1. Use the HLOD Outliner: Add spline actors to an HLOD group and enable HLOD creation for them.
  2. Use Hierarchical Instanced Static Meshes (HISM): Break the spline into segments and instance them, which allows Unreal to generate HLODs.
  3. Create Proxy Meshes: Manually create simplified meshes to act as proxies for your spline meshes and assign them as HLOD proxies.
  4. Check HLOD Settings: Ensure your HLOD settings are configured to generate HLODs for spline mesh actors.

These methods let you generate LODs for spline meshes without merging them into a single mesh.