Enhanced shaders updates the shaders whitout using dirty tricks for any ATI & NVidia
gfx cards with OpenGL v2.0 or higher !
Try the kp_slash key to put the gfx modes to your taste.
Note...: Enhanced Enhanced Shaders will change the look of your Doom III universe so that you get tweaked-out Shaders without any dirty tricks being applied to your ATi or NVidia graphics card.