I am using a Rhino 8 to UE5 workflow for ArchViz and noticed that the mesh that is being imported into UE5 from Rhino isn’t the highest resolution. Is there a way to change the export or import settings to up the poly count of the imported mesh?
Likewise, if I am using 3D assets (fbx), is it better to import these directly into ue5 rather than through rhino? I am noticing a similar reduction in quality when using this workflow.
Datasmith seems to reduce the poly count regardless of whether the original geometry is a mesh or a NURB.
If you could provide any insights into this that would be greatly appreciated!
If you have an FBX file I would import it directly in Unreal. Just normal import, Datasmith import will not work anyway unless file was generated from VRED or Deltagen.
If the model you import contains tessellated meshes (FBX is tessellated data), datasmith or normal UE import will just import as is. No simplification.
If you import a CAD file (.3dm) from rhino, then it will depends which options you setup in UE:
If you select import as Nurbs, UE will retessellate available Nurbs geometry based on the settings you select in the import window.
If you select to import Rhino mesh it will import available tessellated data as is, and discard tessellation settings form the import dialog.
If you are exporting a uDatasmith file from Rhino, the exporter will get Rhino to tessellate Nurbs data to triangle as uDatasmith file do not carry parametric data.
In that case the tessellation settings can be changed in Rhino
Please note that Rhino allow you to apply modifiers such as “edge softening”. Those are purely render modifiers and are not stored in the exported geometry.
