Well, the direct problem is the texture. Of course, it would be possible to change the shader, too. But I already made a new texture

IIRC, the same texture is used for some windows in wq_dry - that's at least where I remember seeing a warning about this very texture. Back then I did not understand how this texture was used

especially when comparing Id's and OA's ... now I know .... Probably, l3th4l just used the windows from wq_dry including everything (only that the lighting there is much brighter). But yeah, let him deal with real life first
