Im getting very noticeable horizontal lines in dark areas, and/or purple and green splotches on textures in Quake/Quake2 or D3D games. Whats wrong?
The brightness control in GLQuake has no effect. The brightness control in Quake2 does work but it is dependent on the gamma settings which are setup in the Windows Display Preoperties tab for the 3D card. Under no circumstances should you ever set the brightness slider to maximum (the extreme right position) in Quake2’s video settings as this will cause the colors to be distorted. When the gamma or brightness is set too high, the color palettes of dark textures will be distorted. These may appear as horizontal lines in dark textures, and rainbow or green and purple color shifts in other textures. There is a utility that increases the brightness in both Quake1 and 2 called IDGamma. It’s particularly helpful on NVidia chipset video cards.
