graphics - Seperating a Model into Meshes for Depth Ordered Rendering

Question

So I have one big mesh which models a building. I would like to chop the mesh into parts by floor and hallway to make geographically distinct "scenes" which I can cull/order before rendering to reduce render time. I used 3DS Max to "Slice" the model into various meshes however in the scene explorer it still only shows 1 object. When I export the scene to fbx and read it in Assimp it only reads in 1 mesh.

TLDR: How do I split a model in 3DS Max (or similar) such that it exports as multiple meshes which I can selectively render?

Answer 1

The solution is to "Slice" the model, in my case I used the Slice Plane to get clean cuts. Then To use a "Mesh Edit" modifier and "Detach" each individual component.