Shadow issue - Tree branches gets almost pitch black

Odahl

Hey Polycount, this will be my first post here on the forum .

I recently started making my first enviroment in UDK. It's alot to learn but I think I got a pretty good grasp of the basics now. However I ran into a problem last night.
I've made a tree with alpha planes for the smaller branches. It looks fine when I render it in Maya but when I import it to UDK I get some issues with the shadows on the alpha planes. Here are some screenshots showing how it looks.

Front:


Back:


One of the smaller branches I use:


And here is the material I've set up:

I followed the "foilage for UDK" tutorial on 3dmotive, but instead of useing 3ds Max I use Maya. This is why I rebuilt the lightning in the shader.

Hope this makes any sense to you guys. I'm fairly new to working with photo textures aswell as UDK so it might've been something I missed on the way.

Thanks in advance,
Oskar Dahl

NoisyMonk

I believe UDK supports edited vertex normals.

This should help.

PS. Welcome to Polycount!

Xendance

Also use transmission in the material.

Odahl

Thanks for both of your responses. I'll check them out as soon as I get back home. I get a feeling that the rebuilding on the lightning done in the tutorial I saw might've been abit to advanced for me at this stage :P. I'm also planning on making the tree branches abit thinner to allow more light to pass through.

Thanks again!