HLOD with Blueprints/Prefabs

Development Asset Creation
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1

Hi!
I’ve been playing around with HLODs, but I’ve noticed that it won’t generate clusters for blueprints/prefabs static meshes, even thought they are set to static. I’ve read some posts from 2016 saying that they work with Blueprints meshes, but that doesn’t seem the case.

EDIT: I’ve also checked the Building Worlds for Fornite, from Unreal Fest 2020, and it was said that all assets in Fortnite are blueprints. So this should work.

I’ve tried:

  • Setting the blueprints meshes to Static;
  • Making the cluster radius bigger;

The strange thing is that, if a blueprint is OUTSIDE the HLOD Volume, it is detected by the HLOD system (if you the Only Generate Cluster for HLOD is off)

So the question is: is it or not possible to use the HLOD with blueprints meshes (simple mesh grouping, no code, no nothing)?

2

After some more tests, it seems that the HLOD system works with blueprints, but ONLY if inside the HLOD Volume there’s a single static mesh with the blueprint (so, inside it will have the prefab/blueprint with lots of meshes, and a cube, for example)

3

Ok, managed to get it working.

The only issue was the parent of the blueprint class!

When creating a blueprint/prefabs (that just contains static meshes), have StaticMesh Actor as it’s parent, then HLOD will work!

309895-solution.png

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