Lighting bug in both Blender and Studio

[dukzae]

I am experiencing a lighting bug that affects both Blender and Studio.

Using Mesh > Clean Up > Split Non-Planar Faces did not fix it. I’d appreciate any potential solutions to this

Thanks

[VegetationBush (FartedAtLightspeed)]

You probably have your normals wrong (so this is not a bug). Check this thread to fix your normals:

Mesh Face/Normal Orientation Blender 2.8

If you ever had the issue of faces not facing the right orientation once importing them to roblox heres is your tutorial: Select all your meshes with A+A in edit mode. [image] [Captura] Click there, and search for the button FACE ORIENTATION. [image] Like in the image above, do you see all those red faces? they are the ones causing the issue, they are looking inside the mesh, not outside. Once all your mesh is selected press SPACE and write RECALCULATE NORMALS, [image] Press that but…

[dukzae]

By “bug”, I mean in general – an issue, or some sort of problem that is not immediately a fault of the software. Anyways, thanks for the help, but it doesn’t fix my problem. All of the mesh’s normals are as they should be.

[Pokemoncraft5290 (Based)]

Have you checked for duplicate vertices? You can merge them by doing Ctrl + A > M > Merge By Distance in edit mode.

[dukzae]

Seems to be changing something, it doesn’t exactly remove the shadows.

Blender:

Studio:

[Pokemoncraft5290 (Based)]

If you don’t mind, can you send a .blend, .obj, or .fbx of the object?

[dukzae]

Sure thing.

Non-Merged vertices:
island2.blend (890.5 KB)

Merged vertices:
island3.blend (875.5 KB)

[Pokemoncraft5290 (Based)]

I think I found the issue. Using the merged file, go to the Object Data Properties panel (the green triangle with squares at each vertex), go scroll down to geometry data, open it, and hit Clear Custom Split Normals Data. I have no idea what it does, but it fixes the issue.