VrayNext VFB bug/region render with auto exposure enabled

[jochenhelfert]

Hi everyone,

when doing a region render on top of an existing render inside the VFB with auto exposure enabled,
the region render doesn't match the initial render in terms of brightness/contrast.

Plus, with each additional region render on top of the existing region and render,
the newly generated region render looks again different compared to the renders done before.

Happens in bucket and progressive mode.
The only way to prevent this behavior
is by switching off the auto exposure before doing a region render.
Is this behavior intended?

I did a search in the forum, but couldn't find a post about this issue.

scene file attached
tested in max2016 and max2019

Thanks
Jochen

[matanov]

Hi Jochen,

Please check this thread - https://forums.chaosgroup.com/forum/...-render-region

[jochenhelfert]

Hi Peter,
thank you for pointing me to the correct thread.

best,
jochen