Material Black when Lightmapped

Unity Engine
1

(sorry I put this in the wrong forum)

Hi all-

So I have some models in Maya where the head and body are separate geometry and textures.

When I bring them into Unity, if I just map the regular diffuse textures on and throw in a light- all is great.

If I try to use a lightmap/Diffuse texture- the head is lit properly, but the body stays black. This is only happening on some of the models.

Any ideas?

Thanks!
Chuck

2

Check the material node in inspector, sometimes things default to black, move the slider to grey instead.

Might help

AC

3

Thanks for the suggestion Targos- but it didn’t do anything- It actually is set to white as is the head texture which works perfectly.

What’s weird is the head lightmap works, and the body regular texture works, but when I make it lightmapped/Diffuse, the lightmap bunches up at the characters elbows. If it were a UV problem, wouldn’t the other texture map incorrectly too?

This is what it looks like:

100873--3898--$picture_10_202.png
100873--3898--$picture_10_202.png958×433 19.2 KB

4

Weird.

  1. In Maya, rightclick over the model and select UV-linking.
  2. Clicking the left column then selecting relevant tex in RH Column assigns textures to UV sets. Observe the hypershade change when doing this to see it happen.

EDIT> Please post a pic of the relationship editor: UV Linking?

I assume you have made a 2nd non-overlapping UV set for the lightmap?
( U need 2)

Cheers

AaronC

PS also looks as though you’ve baked the colour, you might want to just do “Light”?

5

Thanks a million Aaron- you put me onto the right path and this is what finally worked:

copied the characters current uvs into a new empty set i made on each mesh, but the WAY i made the empty uv set is what mattered. I had to put " per instance unshared" - not sure exactly what that means, but it worked.