I just pushed an update to a small addon that renders AO to a vertex color attribute.
The tool has two modes:
- Python AO renderer that supports object local and scene AO (and mixing between the two)
- Geometry Nodes -based object-local AO solution that updates in the viewport in realtime
Raycount can be dynamically adjusted, and the tool supports a built-in optional groundplane.
I hope this will prove useful for projects that need vertex AO for anything.