Talk:Light Textures and Falloff Images
From The DarkMod Wiki
This article is kinda weak... I hope someone comes along and beefs it up...
New idea:
No need for 3rd party baking tool...
1) Remove all direct lights
2) Place lights in map the resemble bounces
3) Capture screen-shots
4) Use Image Editor (Gimp) to obscure all but the light patterns (bucket-fill and selection tools)
5) Blur and Smear (faked Radiance transfer)
6) Save as a light texture
Projected Ambient may be a good fit?