Aftershock Wiki

cg_nomip is a bitmask to disable the picmip on same shaders:

value shader
1 Lightning gun
2 Plasma gun
4 Rocket launcher
8 Grenade launcher
16 Machine gun
32 Rail gun
64 BFG
128 Blood
256 Smoke

Example: To disable the picmip on Lightning gun and Grenade launcher set the value to 1 + 8 = 9.

It is recommended to set cg_nomip 511 to activate all nomips if playing with a high value of r_picmip.