Hi,
did a quick test with a USD file, which just contained a Mesh (rectangular, 3D) and a Nurbs cube (built with 6 NurbsPatches).
It seems that Houdini can push around the NurbsPatch(es) as packed prims after import, but as soon as you try to unpack a
NurbsPatch to a Polygon Mesh, it displays the error in the attached image ("Can't convert prim for unpack...Type=NurbsPatch").
As another test, I also created a SOP sphere and set its type to "NURBS" (Connectivity: Quads).
When I tried to add this to a stage (e.g. inside a SOP Create), it always gets converted to a "Mesh" PrimitiveType.
It can not be added as a NurbsPatch Type.
Did I overlook something or does Houdini not currently support unpacking NurbsPatches from imported / referenced USD ?
Also, does Houdini also not support writing NurbsPatches (from SOP Nurbs) to USD ?
In that case, is support for this planned to be added in the near future ?
Thanks