animated normal map on material - causing seams

str8g8

Hi
I've created a material with a flipbook on the normal to simulate ripples from raindrops ... it still a work in progress, but I'm having real problems with a seam along the tiling edge. I've checked and double-checked the normal map itself and I'm 100% certain my frames tile ok. Anyone got any ideas how to fix this?
pic
cheers

str8g8

edit: updated link so it actually works this time ... no answers on epics forums, I've tried different compression methods for normal maps, and nocompression etc. really annoying because the effect is quite good otherwise...

Harbinger

What's the ground geometry look like?

JordanW

Are you using UV0 for the normal map?

sprunghunt

did you set the tiling mode to TC_clamped on the bitmap?

str8g8

thanks for the responses, and sorry for not getting back, I've been away from the pc :¬(

The ground geometry in this case is just bsp, so I don't think it can be the problem

What do you mean by UV0 for the normal map? The compression settings?

I'll check the tiling mode and let you know what its set to ...

cheers

str8g8

checked the address settings in the texture properties, it was set to wrap ... setting it to clamp has no effect however ...

annoying as hell, otherwise I'm happy with the rain settings I've got (its quite light compared to a lot of tutorials and so on ...)

I used smesh crossplanes for the rain, was dubious about it working, but its actually not that bad.


https://picasaweb.google.com/lh/photo/MHEsk4Tm5olDdde3BlyAWJ9E0gyYAN0dfwR5QhL2JPs?feat=directlink

I'm starting to think this is some kind of bug or something, is there any way to escalate this issue with epic?

Froyok

Well, when you know that mirrored geometry with overlapped normal make seams to be visible in Unreal Engine, I'm not surpised to view the seams on you animated mat.
Can we see a little your material setup ?