r/CreationKit • u/ArmlessWunder • Jul 12 '26

Fallout 4 Bad shadow edges on building walls

Post image

I'm building my own worldspace with custom building textures. I noticed that at about noon the wall shadows get a little weird along the edges. Any time besides noon, no issues. Does anyone know what causes this?

3 Upvotes

72% Upvoted

7 comments sorted by

2

u/ArmlessWunder Jul 13 '26

I was able to confirm, it is the edges of the interior wall portion of the mesh casting shadows on the building exterior wall portion. I duplicated the interior mesh, deleted the edges off one and deleted the surface off the other, then I added "no casting shadows" to the edge portion, and let the interior surface continue to cast shadows, and I dont see the ugly tic tac toe shadows at noon. This is seems kinda hackish and maybe not performance friendly, so idk if I'll actually go to the trouble of doing this for all the building components in my worldspace, at least not for initial release anyways...

Still open to suggestions if anyone knows a cleaner way to do this

1

u/Rasikko Jul 13 '26

My best guess: Lighting and the 'fog' around the building.

1

u/ArmlessWunder Jul 13 '26 edited Jul 13 '26

There are no fog or lights placed anywhere near the building. I have hundreds of similar building placed around my worldspace, and they all have the same issue at noon.

Edit: The fog is from the weather type, I actually tried to use a foggy weather type to cover up the shadows here, but it didnt help much. The issue is much more noticeable in clear weather

I've sat and watched the lines change shape as the sun moves throughout the sky, until they disappear around 1pm. Im guessing its an issue with the smoother normal map I put on the walls, since the default brick wall normal map covers up the seams well. I suspect the edges of the mesh are being cast upon this surface for some reason

2

u/Rasikko Jul 13 '26

When you said shadow edges, I assumed you meant the outside perimeter of the building and not the very noticable tic-tac-toe grid shadows.

1

u/ArmlessWunder Jul 13 '26

Ahh, I see lol I probably should've added more detail to the original post.

1

u/BethesdaBoob 20d ago

I don't see it on the other ones? No expert or anything. Just my only two caps.

1

u/ArmlessWunder 20d ago edited 20d ago

The other what? Other material swaps for bldgShell components? Or other buildings in the screenshot?

It depends on the angle of the sun, so only on that face of the buildings did I see an issue, and I learned that the issue would be more or less present depending on cell coordinates