Lets create a complex lightmap - Open discussion

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Thanks heaps Zac! Finally, success.
I’m still a little confused though because every tutorial I’ve watched and forum I’ve read has drilled into people you need 2 channels. One for texture mapping, and one for Light maps. I know you said that Unreal can generate light maps too, but isn’t it better that I do this manually in 3Ds? I’ve read that Unreal can be a bit funny generating light maps at times. Also, how do I go about telling Unreal to use the 2nd channel using a TexCord node in the material editor?

Unreal needs a lightmap that is not overlapping, has no stitched hard edges, has good sized gaps and doesn’t stick out of the main uv square. If your regular/first uv channel does all that then you don’t need a 2nd one for the lightmap. You can set the channel in the mesh property window in the static mesh section. No need to do anything in the material.