Odd UV importing

JoshWilkinson

A couple factors to this problem, I think? The main problem, the one I want corrected, is that I am getting shadows cast where my tiling UV shells meet. So the vertical shadows along the concrete border of what hopefully reads as a median are where the UV shells meet.



I've never seen this happen before and I'm not sure how to fix it. When I view the UV mesh in UDK's content browser it looks like the UV shells imported incorrectly, or are displaying strangely. Shown is a comparison of the maya UV map and UDK's UV. I'm fine with them showing up strangely, as long as I get the vertical shadows on the UDK mesh to disappear.

AlexLeighton

The problem is probably in your lightmaps. Give this video a watch and see if it helps. [ame="http://www.youtube.com/watch?v=ntx10JMl9f4"]Fixing Lighting Seams in UDK - YouTube[/ame]

unstoppablex

it's definitely a light map problem. what i suggest to fix it, is on your second UV channel make your whole mesh a pelt unwrap so it is only one large piece(this will avoid pixel bleeding like the video alex linked above), then scale the edges to the very borders of the UV coordinates. Stretching is okay on lightmap UVs so don't worry if you have to stretch it a bit.

JoshWilkinson

Whelp, you guys nailed it: it was a lightmap issue. Thanks a lot for the help, I have been going crazy over this one for a bit. unstoppablex, you were right when you suggested that I sew the UV islands together. Such a simple fix.

Appreciate the help. That video was awesome, btw Alex.