USD Import

Unreal Engine Asset Creation
#1

Hi all,

Has anyone had success with USD Import and LODs? There doesn’t seem to be much documentation around it but it sounds like there just needs to be a variantSet named “LOD” with “LOD1”, “LOD2”, etc. variants under it. When I do this though I only ever get the defaultPrim / LOD0 to import, but when I view it in the USD Stage it all works as intended.

Here is what my primary USD file looks like with the variants, I am using references to point to the geometry file.



#usda 1.0
(
    defaultPrim = "lod_test"
)

def Mesh "lod_test" (
    variants = {
        string LOD = "LOD0"
    }
    add variantSets = "LOD"
)
{
    variantSet "LOD" = {
       "LOD0" {
            over "lod_test" (
                prepend references = @./lod_test.geom.usd@</geom/lod0/lod0_mesh>
            )
            {
            }

        "LOD1" {
            over "lod_test" (
                prepend references = @./lod_test.geom.usd@</geom/lod1/lod1_mesh>
            )
            {
            }
    }
}

Does anyone have an example with this working or could point out what I might have setup incorrectly?

Thanks!