Shadow Popping?

HarlequinWerewolf

I am but a simple hair artist so this may be something easy, but can anyone tell me why my shadows are popping on my hair cards? It's most noticeable on the forehead. I assume it's some kind of culling thing? 

iam717

while you wait for someone that knows, this video speaks about hair and lighting, 

if it helps it would be beneficial to post the solution for others.

https://youtu.be/6AiUrL9Pa0s?si=2dwjlwzXh7DeJZKq&t=97

If i had to guess, it looks like some compensation is happening.

HarlequinWerewolf

iam717 said:

while you wait for someone that knows, this video speaks about hair and lighting, 

if it helps it would be beneficial to post the solution for others.

If i had to guess, it looks like some compensation is happening.

Appreciate the link, but these are hair cards rather than a strand groom. And I think the emissive lighting not working with strand hair is a by product of lumen. 

poopipe

i forget the name of the feature but there's a specific volume shadowing option for hair cards that drops off quite early  -
there's also a lot of options in the settings for lights that affect when certain features lod out and of course there's the thousand config options you can fiddle with. 
that said - you're using lumen so you're probably fucked and 'it'll be fixed in the next engine version honest'

HarlequinWerewolf

Thanks @poopipe I understand now that lumen is the biggest issue here and I opened this for the first time in about a month the other day and thought, nah... we just need to start over. I'm not happy with the shader, the lighting... the whole thing so yeah, I think I'm just gonna switch off lumen