Vert/prim count was the easiest way to do it. It doesn't require me to checksum vertex buffers or anything like that. I'm hoping to add texture checksums as a

Vert/prim count was the easiest way to do it. It doesn't require me to checksum vertex buffers or anything like that. I'm hoping to add texture checksums as a secondary key, so that you can get some control over instancing (just modify your character's head, for instance).