Screenshots don't work with MSAA enabled #12
Description
When using MSAA, screenshots always turn out black. This is due to the game trying to do a glReadPixels on the multisampled framebuffer, which is an error.
Honestly given that this bug has been there since the first public release and no one's reported it, it's sort of back burner at the moment (Descent 3's screenshots don't look particularly good since they're always 16-bit), but it should be an easy fix if anyone needs it.