UE4 - Translucency clipping / draw order of hair? (pictures)

Croftyness

Hello,

I'm having trouble getting translucency to work correctly in UE4. The problem is that deeper layers of hair geometry are taking rendering priority over the ones towards the outside. The first image is a correct reference, the second image is how it's rendered in UE4 and the third image are the properties I'm using. I've done some quick googling and could only find 1-2 posts on the subject, my understanding from these posts is that there's no solution for translucent clipping. However I wanted to make sure I haven't overlooked something.

Any ideas or alternatives?

Neox

the first one seems to be using alpha to coverage, while the second is using soft alpha?
So the second is to be expected, didn't use unreal in a while but there should be an option to your alpha to coverage

Croftyness

Thanks for the reply, couldn't find an option for it. :S

katzeimsack

Never use soft alpha for anything else than particles and maybe glass

I'd suggest alpha test (masked) with a temporal dither note between your texture and the mask slot.

Thanks to AA the dithering is hardly visible and makes masked look really soft

Croftyness

Dither Temporal :thumbup::thumbup: Cheers man. Kinda new to this area, is there anything I should be looking out for in terms of game engine hair?

mpej429

I have the same problem but dither looks bad for me