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Overlapping UV's - Impossible to change UV channel.

Hello,

I’ve already looked Erorr : Object has wrapping UVs. - UE4 AnswerHub and https://wiki.unrealengine.com/LightingTroubleshootingGuide#What_is_this_.E2.80.9COverlapping_UV_error.E2.80.9D_non-sense_when_I_build_lighting.3F but nothing works :frowning:

I have a problem with multiple objects of Military Pack Part 1 on Market Place, they have 2 UV channels (channel 0 and channel 1), but when I try to change channel (Light Map Coordinate Index) nothing happens, it stays on channel 0.

If you have a solution, I’m interested :wink:

PS : I’m french so there may be errors of translation.

Hi!
I think you not right undestend how this work.

From this doc

Hi Blazyx,

There are some issues currently with the Lightmap UVs for the Military Pack 1. I’ve already discussed this with the Content Team and they are going to be taking a look at this very soon to see what needs to be done to improve that.

Some of the meshes are very complex, especially the vehicle ones, and will not properly unwrap using the generate UVs option due to how they were unwrapped.

For the main reason you posted with not being able to set the lightmap coordinate index to anything other than 0. This is the result of having multiple LODs for a mesh. The lightmap coordinate index is setting the lightmap for all LODs to the same channel. If you have not generated a Lightmap for the additional LODs it will not let you set the Lightmap Coordinate Index and will revert to 0 as a default.

This was something I did not mention in the Wiki guide, but since you’ve pointed it out I’ll go back and update that as soon as I have some free time.

If you’re still having issues, please let me know and I can assist. :slight_smile:

I sent two messages to the content team but they have not answered me and I don’t know if they are trying to correct the problem or if I should find a way to get a refund for a pack that is not working properly…

Hello,

The Military Pack still does not work (Lightmap UVs). I sent two messages to the content team but they have not answered me and I don’t know if they are trying to correct the problem or if I should find a way to get a refund for a pack that is not working properly, but i don’t know how to do that…

I have the same issue with Military Pack 1. It is unusable (map wont build because of Overlapping UVs) in its basic state and requires a good time wasted on editing the UVs.
Though this pack could be very usefull, i might be requesting for a refund too.

here are the errors i get
http://clip2net.com/clip/m437360/c0819-clip-363kb.jpg