DR + adaptive dome light or adaptive lights results in buckets.

[Fat Tony]

Hello,
We get this issue quite a lot. When using DR on random occasions we get bucket of this sort.
The same exact scene was rendered for animation as well, 1 frame on 1 node, and there was not a single issue.
Same happens also when only 1 node is rendering.
Checked for overlaps and other straight forward things that could cause this (also this would show in the animation).

Based on that we are guessing it has to be DR issue.
It shows only in HDRI pass, which i guess means that this could be the adaptive dome light bug ?

Thanks for quick response.

[glorybound]

Adaptive dome light (WIP) is probably causing it. I haven't been able to use Adaptive dome light because of this issue.

[Fat Tony]

Adaptive dome light (WIP) is probably causing it. I haven't been able to use Adaptive dome light because of this issue.

tried now turning it off, still same thing happening, tho. testing also full eval of lights.

[Fat Tony]

it is actually a big problem because we have this a lot.
idk if some specific HW setup for DR can be causing this or what, but we have it almost in all stills images rendered with DR.
And it is not a some plugin missing because all anims are rendered correctly.

[vlado]

Do you think it will be possible for you to send us a scene to support@chaosgroup.com ? If there is an issue, we will need to solve it.

Best regards,
Vlado

[vlado]

Adaptive dome light (WIP) is probably causing it. I haven't been able to use Adaptive dome light because of this issue.

I'm not actually aware of any issues with the adaptive dome light and DR and it generally seems to work fine here. Do you have more specific steps to reproduce the problem?

Best regards,
Vlado

[Fat Tony]

I'm not actually aware of any issues with the adaptive dome light and DR and it generally seems to work fine here. Do you have more specific steps to reproduce the problem?

Best regards,
Vlado

Hi Vlado,
Yes i tested last days pretty much all the combinations, and it didn't prove that the Adaptive lights or dome was the issue. Even without the setting enabled the issue was still there.

What i noticed that there are 2-3 nodes out of 8-10 rendering that are causing the buckets, but what is weird is that is every time other ones.

Will pack the scene and send over. Hope it will help.

Thanks!

[kosso_olli]

Hi Vlado,
Yes i tested last days pretty much all the combinations, and it didn't prove that the Adaptive lights or dome was the issue. Even without the setting enabled the issue was still there.

What i noticed that there are 2-3 nodes out of 8-10 rendering that are causing the buckets, but what is weird is that is every time other ones.

Will pack the scene and send over. Hope it will help.

Thanks!

There was an issue some time ago, where the render nodes had trouble with the light cache. Basically every node created or received a slightly different one.
Please do the following to verify: Precalculate the light cache on one machine (dont render final image on to save time), and then load it in the GI settings (light cache from file mode). That way, every node will receive exactly the same light cache. If the issue is gone, please report this as a bug.

[Fat Tony]

There was an issue some time ago, where the render nodes had trouble with the light cache. Basically every node created or received a slightly different one.
Please do the following to verify: Precalculate the light cache on one machine (dont render final image on to save time), and then load it in the GI settings (light cache from file mode). That way, every node will receive exactly the same light cache. If the issue is gone, please report this as a bug.

hi Kosso,
Tried that exactly, since the buckets were specifically in indirect pass of HDRI.
Problem is that the render speed drops significantly, since i guess the LC is used for also many other calculations.
To be honest i didn't eve let the render finish with that test because it was barely moving.

Support has the scene already, so i guess there will be some back and forth now, and we will find the issue.
I am pretty sure it could be just me doing something weird, but problem is that it is almost in every scene, and we tried to many approaches.

Will report once know more.

[tussilago]

Hey guys.

We've encountered the same problem.
In one case we found out that one of the nodes was running a newer version of v-ray which caused the problem with some buckets rendering differently. This might help some people but we've also had the same problem previously with another scene where all of the nodes had the same version.
Versions:
4.2 29145
and
4.1003 29065