UE4 Normal map seams big problem

Lizardsking

Hello, I was working with normal maps and everything was fine. Until I start work in UE4. Where I get strong light seams in UV edges and nothing helps. That's my problem:



My pipeline:

1. I do high poly model in ZBrush



2. Do low poly model with Freeform>Draw on: Surface. It wasn't triangulated, I just tried everything to solve problem



3. Unwrap in Headus UVLayout v2 Pro. I did seams in visible places to see the result.



4. Bake in Xnormal. Not change default setting except Normal map X+ Y- Z+



5. Export it in engine and see the result.
In UDK: all good



In UE4: all sucks



What settings was changed in UE4? HELP ME!!!

Lizardsking

I can tell it is not invert green channel problem. I tried both green and even both red channels.

JedTheKrampus

Have you set the compression type to TC_Normalmap?

Lizardsking

I tried it, but I tried again and now it works. God bless you man, now I finally can work, you made me happy so much, I get you free copy of my game when finish it

Actually I wondered cuz i remember in previous versions of unreal it changed compression settings automatically.

JedTheKrampus

UE4 should get the right compression setting out of the box, actually, but you have to make it so that your normal map has "normal" or "normals" at the end of the filename. It didn't work this time for one reason or another.

Lucas Annunziata

I've found that if you have an alpha channel when importing into UE4 sometimes it won't auto-compress as a normal map.

Steppenwolf

JedTheKrampus wrote: »

UE4 should get the right compression setting out of the box, actually, but you have to make it so that your normal map has "normal" or "normals" at the end of the filename. It didn't work this time for one reason or another.

Actualy just _N should do the trick but yea correct file naming is key when importing.

Flumpinator

Lucas Annunziata wrote: »

I've found that if you have an alpha channel when importing into UE4 sometimes it won't auto-compress as a normal map.

Thank you for this! I knew something was wrong with my normal map somehow, didn't realise it would affect it so much. Happy now