( Resolved ) banding issue in VFB

[LeoYfver]

The issue seems to have start between V-Ray Core 5.10.03 and V-Ray Core 5.10.20.

Here I use the latest ACES 1.2 from https://github.com/colour-science/OpenColorIO-Configs

and as you can see that since V-Ray Core 5.10.20 banding artifacts started to appear

houdini 18.5.499

linux centos, cinnamon

to the left is:

V-Ray for Houdini number:12523 hash:fba7db2 from 25 May 2021 02:03 (build number:12523)
V-Ray Core 5.10.03 [fefb5099] from 19 May 2021

to the right is:

V-Ray for Houdini number:14462 hash:8cd7621 from 05 Aug 2021 02:02 (build number:14462)
V-Ray Core 5.10.20 [df34ddfc] from 2 Aug 2021

[tsvetomira.girginova]

Dear LeoYfver, hello.

We are investigating some banding issues when low-intensity lights are used, so you are right on time.
It will be very helpful to share the lighting setup or a test scene, that you have used.
That way I will perform the very same test - for now I am not able to reproduce such a clear difference.

Thank you in advance.

Best regards,
TS

[LeoYfver]

here is the file. Btw as a sidenote the scene crashes often when either moving or pressing a button in the VFB.

Regards Alexis

[tsvetomira.girginova]

Thеn 2 in 1 for looking at.
Thank you!

[Dubbie99]

I am also seeing this issue in some renders using the scattering shader.

[tsvetomira.girginova]

Happy to announce that the described from LeoYfver banding is handled in nightlies.
Please check the latest (from today).
I have just tested it both on win & linux and could confirm.

Dubbie99, please give the mentioned build a try.
If you are still experiencing it, we will need more information and run more tests.

Thank you both.
Wishing you happy Friday the 13th.

[LeoYfver]

tsvetomira.girginova thank you will will probably try it next week.

and happy friday 13th to you too :P