Units km material strange

[Schellicon]

hi,
i changed my Units to km and in the material Editor the Preview has faceproblems , reverting Units to cm problem disapears.

In VrayscatterVolume material in Units km the IPR renderer differs from final render , in ipr the material stays solid , render is correct ,reverting Units to cm problem disapears.
see attached image and scene (vray6 , max2023)

regards
Thorsten

[Schellicon]

just tested everything in 3dsmax 2021 with vray 5
materials editor preview is working here
but the VrayscatterVolume material in Units km has the same ipr problem and only works in render, same problem here

[hermit.crab]

hi, i changed my Units to km and in the material Editor the Preview has faceproblems , reverting Units to cm problem disappears.

Do you mean the visible polygons?

In VrayscatterVolume material in Units km the IPR renderer differs from final render , in ipr the material stays solid , render is correct ,reverting Units to cm problem disapears.
see attached image and scene (vray6 , max2023)

I cannot reproduce this (tested with V-Ray 6, hotfix 2). The results are identical with either km/cm units. Perhaps you could illustrate (i.e. short video) the issue?

[Schellicon]

yes i mean the polygons, which are not present in vray 5

about the VrayscatterVolume material :
in cm: render and ipr are ok,
at km: render is ok , ipr is solid (added screenshots)

attached the tested scene
(tested with V-Ray 6, hotfix 2)

-open my scene
-render
-render ipr
switch units like in screenshot to km
-render
-render ipr <- material is solid

[hermit.crab]

I managed to reproduce the issue. It seems there is an issue with the automatic conversion of the Scatter Radius parameter (which is always in cm). I've logged it (internal bug-tracker id: VMAX-12487) for developer investigation. The polygon issue may be related.