Recently dug up some old photos, er screenshots from the days when I was a graphics geek. I'm supposed to give a presentation about same one of these Thursdays.
Someone asked for negative lights (I think it was a RTCW mapper), so I added them in a patch release. One nifty thing was since the light was stored in floating-point buffers before storing, the negative lights could actually suck the light out of a scene.
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