Hey all,
I am creating a character to test UE5, and I realized the the hair shader ignores any indirect light. So it gets super dark. Also the Scatter and Backlight from the shader doesn’t seems to be affecting anything.
I set up my scene to work with Lumen, and any shadow that hits it gets super harsh and weird.
The Skylight with HDRI doesn’t seem to affect it as well… I can boost it up, everything gets brighter, but the hair keeps dark the way it was.
Thank you.
Can you post a screenshot?
I think I’ve seen a youtube video on this exact issue and how to fix it, but I’m not totally sure.
Sure, thanks for the reply.
Left is a image of the character inside UE4, the Sky Light affects it’s color and reflection. Not sure if it is getting indirect light. But in UE 5 it is not getting skylight, nor indirect lights. Shadows gets super dark and hard.
Something I realized in UE5, the eye shader settings also doesn’t do anything, the iris mask and iris distance. Gonna test if skin transmission is working.
Here’s the video I saw. Not sure if this is related.
He goes over a few settings and what happens.
Hi Renoli,
Have you managed to sort this out? Having the same issues rn.
Thanks!
When using lumen in an indoor scene, I found shadows getting hard and pixelated. When I baked the scene with proper lighting by switching of lumen and real time capture, the problems were gone.
Either we need to play around with lumen settings a lot or stick with normal lighting, till the issues are updated in the UE5 final version.
I didn’t figure it out.
I ended up doing the project in UE4.27 with Ray Tracing.
A message to tell this issue still occurs in the last version of UE5 (5.0.2), no indirect light bounce and still harsh shadows on grooms.
It seems to only work well in Cinematic mode in 5.2
In the video, you can see the hair drastically change at 1:24 when it is switched from Cinematic
There’s a cvar called r.HairStrands.SkyLighting.IntegrationType
On CInematic Scalability (Shading), it’s set to 1. On all others, it’s set to 2.
As one might expect for a Cinematic exclusive, it’s costly. But it’s the only way I can find to get Lumen + Skylight + Strands to play nice.
