cg_shadows makes objects invisible

[KayFTW]

OS: Windows Vista 32 bit
Renderer: GL3

On the new renderer (GL3), cg_shadows 2 makes the renderer spazz and things flicker all over the place, making the game unplayable. on cg_shadows 3, all the walls, floors, and ceilings of maps become invisible and see-through. On 4, all the alien player models are invisible, on 6, only the Dragoon, Basilisk, and Marauder models are invisible.

cg_shadows 3: http://i42.tinypic.com/514hs1.jpg
Replicate:
cg_shadows 3

`````` vid_restart```

I don't have a screenshot of cg_shadows 2 messing up the renderer, how to reproduce:
cg_shadows 2
vid_restart
I also don't have a screenshot of what cg_shadows 4, and 6 do, however just replicate, obviously, but changing them to 4 or 6.

[Sixthly]

vid_restart has been known to cause issues, are you positive it is not caused by that?

[ZdrytchX]

I noticed cg_shadows 4 is not a replica of cg_shadows 3 anymore. For some weird reason it goes in the direction of the greatest light source instead of away from it. It also tends to float in one z-position.

[cmf028]

I don't see this issue, and I have not seen any other instance of this issue.