I'm a beginner with 3D skyboxing and stuff, so I thought to make my maps more efficient and be able to add area portals I would put this stuff in a 3D skybox as the roof. The problem is it's transparent, and I have no idea why. Please help.
Anything in the 3D skybox is always rendered behind stuff in the real map. I think that's the issue you are having, but I can't tell your intended position of that building.
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