Umbra appears to have a memory limit, imposed by Undo

Hey guys. When baking occlusion culling for a Very Large Scene, I'm getting the error:

Code (csharp):

1. Failed to create Object Undo, because the action is too large. Clearing undo buffer

at the end of the baking process, and baking does not succeed. I'm confused why Unity would make the Umbra baking process fail here, but that's what seems to be happening. Considering this response, I'm not too hopeful, but has anyone found a solution to this issue? Or could we get this fixed, or the memory limit on Undo configurable?

 

That's a bug for sure. Send a bug report!

 

Hey guys - found a workaround! It seems that it was the terrain causing the issue. Simplifying the terrain splat map (changing the res to something much smaller) during occlusion bakes solved this issue.