Hey this is my first post, I have a moderate amount of knowledge with UE4 but I am having a small lighting issue. As seen in the attached images, I am getting a weird lighting problem after building my scene. The window frames are all attached as one model and using the same UV space, no idea if this would affect it in anyway, hopefully somebody could give me some advice on how to resolve this!
Thanks in advance!
Using the same UV space is fine but it looks like the UV’s are overlapping. You need to rearrange the UV layout so that no face overlaps, either in your modeling program or by using Generate Lightmap UV’s option in the editor.
Auto generating the UV’s doesn’t seem to fix the problem, If I was to give each window frame it’s own space within that one set of UV’s. how would I then import the new UV’s to so that it’s doesn’t mess with the normal maps etc I have already baked out?
UV’s you had prepared for the textures are at UV channel 1(0 in UE), so you can create a second UV layout in channel 2(1 in UE) with no overlapping UV’s. How to create a second UV channel depends on the modeling program you are using. Let me know if it is 3Ds Max and i’ll help you out, if not i’m sure there are tutorials out there for other programs as well.
I just had a friend help me out with it, it was a lot easier than i though, simple gave everything it’s own UV space in the second channel (as you’ve mentioned), exported it again and imported it in UE4 then increased the light map size to 256, job done! Thanks a lot for your input, much appreciated!