Windows <- OSX Unity Editor 5.1.1 lightmaps not matching

Unity Engine
1

This is likely known but just re-iterating as it is a big problem for us.

We bake in Windows, the lightmaps look fine.

Open the same scene on an OSX machine, the lightmaps are broken. Black patches all over the place and the preview window in the light tool is not showing anything on a Mac.

1 Like
2

We have the same problem.

3

Hi! We are aware of this problem and we already have a bug report on it in our tracking system. This happens because of differences in the UV unwrap between platforms, because of different math implementations. We are working on a fix.

4

Awesome. Thanks!

5

This is still happening in Unity 5.2. Baking lightmaps in Windows (64-bit 5.2.1f1) and looking fine. But when we export the package into Mac (5.2.0f3 ) the lightmaps are messed up. Curiously, this is not happening on every scene - some Windows lightmapped scenes are working properly on a Mac.

6

Same issue in 5.3

7

@larskroll The issue was fixed in 5.3.1 (Editor: Force reimport all models to ensure that generated lightmap UVs are consistent across platforms. (739787, 745698))