Baking lightmaps (LightmapGI) at runtime | Godot Café | Page 1

i wasn't able to help but https://github.com/godotengine/godot/pull/91676 is relevant to whoever sees this next

GitHub

Expose runtime baking functionality in LightmapGI by RisingThumb · ...

This will resolve #59217
This partially resolves godotengine/godot-proposals#8656 . It exposes bake() for scripting, however there isn't any cancelling or aborting yet. Additionally it does not...

#Baking lightmaps (LightmapGI) at runtime