Thanks for the info Halo. Looks like I've still got some experimentation ahead of me.
I just loaded up a quake3 bsp map and a spot light does indeed work perfectly in conjunction with the shadowed areas... though it obviously still requires decent tesselation for a smooth effect. I'll have to try and see if I can control the level of tesselation in anyway with a bsp map editor perhaps using smaller evenly spaced brushes...I'll see.
I just loaded up a quake3 bsp map and a spot light does indeed work perfectly in conjunction with the shadowed areas... though it obviously still requires decent tesselation for a smooth effect. I'll have to try and see if I can control the level of tesselation in anyway with a bsp map editor perhaps using smaller evenly spaced brushes...I'll see.