Support for Quad Meshes in NVIDIA Kaolin's USD Mesh Import/Export

[prokolyvakis]

What

Currently, it seems that the Kaolin USD mesh import/export functionality mandates triangulation of meshes, as non-triangulated (quad or n-gon) meshes are not supported natively. While triangulation is a reasonable fallback in many cases, preserving the original quad (or higher-polygon) mesh structure is often essential for specific applications such as:

1. High-quality rendering workflows (quad-dominant meshes yield better subdivision results).
2. Simulation environments where quad meshes provide better results.
3. Scenarios where conversion from quad to triangle might introduce artifacts.

I would like to inquire whether there are plans to add support for importing/exporting quad (or n-gon) meshes directly without the need for triangulation. Such a feature would be highly beneficial for applications that rely on native quad meshes, and it could expand Kaolin's usability across diverse 3D pipelines.

[Caenorst]

Hi @prokolyvakis , thank you for the feedback! It's definitely an interesting feature. We can try to plan it for the next release, would appreciate MR if you want to contribute :)