Bloom on Lighten Areas?

Hi guys, i have seen that some games have bloom only in the lighten ares, like this

Black Prophecy: http://www.youtube.com/watchv=0y6bFJxdVZk&playnext=1&videos=2bnAIXTEMys

is this possible? and someone can give me an example file? 8i dont know too much of phyton), thanks

I get an error from that link, but generally in a bloom shader they bump up the contrast before blurring, so only the brighter areas are bloomed- but if you want to get really serious, then engines like the Source engine allow for HDR- in which case they have a range of brightnesses that is wider than the monitor can display, and parts that are “brighter than white” get bloom. Blender can’t do that yet though.