Quake 1: r_softwarebanding breaks player model colors

[Xylemon]

https://sourceforge.net/p/fteqw/tickets/129/

@Xylemon wrote on 2022-03-02:

The r_softwarebanding cvar currently breaks any player colors being applied in defaultskin.glsl - this seems to be some error during the colormap lookup inside the GLSL.