Lighting issue on imported mesh

synergy11

I imported a custom mesh and copied it 3 times over.

I rebuilt lighting and still it is showing a strange lighting result.

I built my lightmaps on a different UV channel and they are not overlapping.


Do I have to tell uDk to use my lightmap channels? Or does it auto detect that I have them.

Could this issue be caused by the way I copied the mesh over? Maybe it copied the lighting as well?

Thanks for any help!

Ken Benson

If your lightmap channel is the second, you don't need to manually tell UDK which channel. If it is something else, you need to go into the static mesh and set the lightmap channel accordingly. (1st channel = 0, 2nd =1, ...)

Did you apply a smooth group to all faces? If not, give that a try.

I can't be of much more help without seeing the UVs or playing with the model myself.

WarrenM

That looks like a smoothing group issue to me. Are they set up correctly on that mesh?

synergy11

Thanks for the responses.

I am using Softimage. I'm pretty sure there are no smoothing groups in Softimage?

It's just a cube. Unless I am not understanding!

ZacD

I believe unreal makes hard edges based of the uv map in the first channel.
You can also make hard edges to see if that helps.

Also there is geometry approximation that affects the smoothing.

cptSwing

is it mapped with a baked normal map? remember to bake with instances of the asset welded to each side.

doomstagg

Try the simplify mesh tool. It DOES look like a smoothing group thing to me.
The simpolify mesh tool lets you choose: Preserve Smoothing Groups, Make soft or Make Hard....make hard yo.
Hope that helps

synergy11

Thanks it worked.

I selected all the edges in Softimage and marked hard edges. Then I exported with ActorX and clicked Obey hard edges.