i have a large procedurally generated mesh consisting of a lot of small meshes (added with Mesh.CombineMeshes) and although that works well and good, what would be the best way to convert that to a mesh or polygon of some kind that would be workable for level geometry.
You already have turned it into a single mesh from what I understand. There’s little else you could do without providing specifications what the end result should be. Do you wish to extrude these planes into 3D geometry (tunnels) perhaps?
Do note that a single mesh means the entirety of a combined mesh is rendered any time its bounds are within the camera frustum which could become wasteful as more geometry is being added.
Sorry about the confusion, i am trying to extrude the mesh into 3d tunnel geometry. The entire this is currently one big mesh object constructed using smaller meshes combined into it.