Hair flickering

V-Ray V-Ray for 3ds Max General
1

Hello, I m testing ornatrix hair and i ofc im getting some flickering in my beauty.
I dont have a perfect simulation and my geometry is bouncing a bit, but the thing is that i see flickering in my lighting pass. I was expecting only in my gi pass. In my reflection/spec passes i do not have flickering.
I dont know if its a material issue so im attaching the settings as well.
I rendered with RT gpu with not very high settings, my lc was 1024 but idk if that was the issue here. The only other thing i did, i checked lock noise pattern and changed filter to area with 1.5. Rest default
I let it render 1:30 min per frame with 2 x 980ti to see what i get. The image was clearing up well so i let it there.

Here is the passes in my dropbox, download em for better quality:
beauty: Dropbox - Error - Simplify your life
lighting: Dropbox - Error - Simplify your life
refle: Dropbox
specular: Dropbox - Error - Simplify your life

I dont attach gi, cause no need is obviously similar to lighting and the most flicker is logical to come from there.

Thank u very much!
Thanos

hair material.jpg
hair material.jpg713×1111 123 KB

2

Hi Thanos,

Looks like the “Random by strand index” option of the VRayHairInfoTex shows inconsistency between animation frames in RT GPU. Thanks for the report !

3

Thanks for the reply. Ru sure that this is the case? I mean with my settings, what should i increase to stop flickering?
I made a new anim test with much better simulation and the flickering is there, but far less noticeable (at the end of the video).

I appreciate the help here :slight_smile:

4

We will need to get you a new build when we fix this in a couple of days; I’m afraid there is nothing you can do on your side if you want to keep the random by strand texture. You can email me to vlado@chaosgroup.com with your 3ds Max version and I’ll try to get you a fixed build when we have it.

Best regards,
Vlado

5

Thanks Vlado, im emailing u.