The sunlight in arghrad bothered me. It was set up so everything that had line of sight to the sky was uniformly lit with an "ambient" value. This ended up causing things to look very bland and incorrect. Reflected light would make areas that should have been darker actually lighter.

So I set about using the DeWan tools as a base to create better sun/ambient lighting. Sadly, it was in a pretty rough state to start out with:

Not sure how things came anywhere close to working with the way the sun light code was handled, so I scrapped it and eventually ended up with:

All was well and good, until I tried to use it in a real map I was working on:

Turns out hint brushes were casting shadows. Oops.
I do have the source of my changes so far up on sf.net's cvs:
http://paintball2.cvs.sourceforge.net/v ... tools_src/