R fullbright

Name: r_fullbright
Default value: "0"
Cvar flags: cheat
FTEQW Builds: Software Renderer OpenGL Renderer Minimal GL Build Merged Build Linux Build

~copied from FuhQuake manual~
r_fullbright (0/1) default: 0
0 = Do not fullbright the map.
1 = Enable fullbright display of the map.
This variable toggles the use of lights at full brightness on the map. When this
variable is set to "1" the renderer system will render all textures on the map
at full brightness. This will allow map authors to remove all of the lighting
effects from the map.
This variable was removed in QWCL and has been re-introduced in FTE now,
however it can only be used when the server is running with cheats enabled (for
example "qwsv -cheats"), because it could be used as a cheat by making it easier
to see players in dark corners when no fullbright skins are used.

QuakeSRC Wiki Quote:

r_fullbright is a boolean variable, (1 is on, 0 is off) which turns on or off the precompiled lighting on a map. If you set it to 1, every shadow will disappear and everything will be extremely bright. 99.9% of the time, this is ugly, but this command is sometimes useful if you are creating a map and want to test it without finishing all the lighting, or if you want to "cheat" in an unnecessarily dark level.

Keep in mind that changing r_fullbright in Software Quake has an instantaneous effect, while in GLQuake you will have to restart the level (use the restart console command) for it to have effect.