Auto gen lightmap - islands have no padding

[anonymous_user_843b6f1a]

A simple road cone with 1/64 uv margin:

Here’s the lightmap it generated:

I’m impressed it’s stitched the outer ring of the base together, am also wondering if that is what’s caused the other islands to shift to the left.

Resulting lightmap:

I understand I’ll probably need to make a custom lightmap to make sure the cone’s vertical-part’s island edges sit on the pixel grid (or even unwrap it differently). I’d like to see what the auto-generated lightmap will give me so I can see what I can get away with first. Am guessing this result isn’t the desired one.

Here’s the FBX: [Cone279_low][4]

Thank you.

[anonymous_user_843b6f1a]

I set the default uv margin to 1/16 and it works.

UE4 auto lightmap now looks like this:

Results in this:

That’s fine for me, at least I know what to do if I encounter this again…