[quake2] brightness

[Karen Pouelle]

> > Buck Rekow:
> > Does anyone know a way to alter brightness without using the slider?  
> > For some reason my keys do not work in the video config screen

> Rick Knight:
> I use 'xgamma -gamma 1.75' before I start quake2 and 'xgamma -gamma 
> 1.00' after I quit. I have a batch file that does it all for me. Works 
> great.

The cvar that the brightness slider changes is vid_gamma






































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