Bug Problem with Directional Light and imported object

Hi everyone, I tried to import a level for my game in .obj format and if I look at the imported object with the camera the directional light seems to stop working.
This also happens when trying to play the game. During the import I also disabled the import of lights. I leave a short video where you can see the problem. Thank you for your help!
I use Unity Editor with version 2021.3.8f1 and HDRP (DX12).
Video link: https://1drv.ms/v/s!AtLsur-Ing99fA3VoxP5u3Wv9zo
Have a good day!

 

I'm not clicking on a link like that. Do you have a youtube account? Or just add an image to the forum post.

Is it perhaps backface culling you're seeing? Or just scaling? Start with a basic cube, get that working.

 

Hi, sorry for the link, it's OneDrive
But if you feel safer I'll leave you also for YouTube.
As you will see the problem is only there when this object is rendered, I also tried scaling it.
Could it be a problem with the .obj format?
YT:

 

That kinda looks like maybe the bounds computation is wrong. The bounds SHOULD be properly handled at the import stage. You could get a reference to the Mesh using the MeshFilter and recompute the bounds, just to eliminate that possibility. On the object in question it would be (in

Start()

):

Code (csharp):

1. var filter = GetComponent<MeshFilter>();
2. var mesh = filter.mesh;
3. mesh.RecalculateBounds();
4. filter.mesh = mesh;

and see if maybe something changes?

What exactly is the object in question? Is it a giant sky dome or sphere with that white outline on it? What if you set the scale really small, like (0.01, 0.01, 0.01)?

 

Eventually I wanted to try using the same object in FBX format and it gave a positive result. Probably the problem with the .obj is what you described. I still thank you for the help!