Hello, heres a script I just wrote to experement with shadows.
At the moment it does AO but it could be modified to do radiosity fairly easily (multiple bounces and transfor color) - lights also
It uses a spacialy subdivided tree to get verts proximity. this is how it avoids being realy realy slow.
Once this datas collected it doesent change, so it could be re-used to do multiple passes. emit etc.
Feel free to play with it and make new versions or whatever. - Lines 260 to 280 have the fun stuff to play with,
- image removed