Lighting problem with mesh

Ryandec · Aug 2013

So I just made this floor thing, same way I do all other meshes and same way I do lightmaps, but some areas and brighter than others.....

Ryandec · Aug 2013

Still having this problem been trying to fix for ages

Obscura · Aug 2013

Try this. How you do is not the "correct" way btw.Using that small mesh copies arent really optimized. Try to use bigger pre-attached/welded meshes and then they will work better.Look at the lightmap uvs here:
http://udn.epicgames.com/Three/LightMapUnwrapping.html

Ryandec · Aug 2013

So i looked these I still dont understand, in maya i use automatic mapping for the lightmap, I learnt to do it this way from tutorials and and it had worked well for everything else I have done so thats why I dont understand why its got the problem, ive tried taking the normal map off and it makes zero difference and same with the spec map as to the small mesh copies I thought that was the whole point of modular parts was to create a floor part, wall parts roofing etc and put them together in the engine here is map the mesh looked like and here it also shows the lightmap settings and the lightmap im using....

underfox · Aug 2013

I could be wrong, but what about the vertex normals of your mesh? they may be oriented in a way instead of pointing upward.

Reecekc87 · Aug 2013

Thanks for the post!

cptSwing · Aug 2013

^ bot?

Xendance · Aug 2013

For normal non-dominant lights the specular reflection depends on the UV direction as far as I know. Dominant lights render the specular component dynamically so it looks correct.

Lighting problem with mesh

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