Nothing to explain here - moving vdb or changing settings very slow, looks like reload each time And the problem with the visible bounding box still here - with global volume or inside/intersecting with another object with volume mtl.

Hi, Some more explanation would be useful :wink: Are you able to send the VDB in question to us? If possible in a simplified scene which shows the issue with slowness. The second issue we are aware of and have it logged in our system. Rowan (Internal ID=594075946) (Report ID=CRMAX-264)

I thought it was pretty simple, but ok I have cloud VDB loaded in corona volumegrid, it takes some time to start IR. After that I can move/rotate the camera and everything runs smoothly. But if I try to change the position/rotation/scale of corona volumegrid during IR it takes a lot of time. Same i…

[image] v.p.vlasenko: And the problem with the visible bounding box still here - with global volume or inside/intersecting with another object with volume mtl. Hey, I have some good news, we’ve managed to fix this in v7 and it will be in the next daily build. The other issue you reported we…

Hi, I just checked out those Pixar cloud VDBs. I guess it is to be expected that the larger VDBs take longer to reparse, “wdas_cloud_sixteenth.vdb” is a 1.5mb file, so it would be expected that Corona can reparse this quickly. However wdas_cloud.vdb is a 2.8gb file, so I think it is also expected …

Hi Rowan, I don’t know how corona working but should it be reparsed each time I move it or change scattering settings? Why this not happens with geometry in the scene. For me it looks like something I wrote about in the first post - looks like vdb loaded from disk each time I move it during IR. An…

Hi, I’ve done some further investigation and spoken with our devs, even with geometry it looks like we re-parse it with every change. I checked the same VDB with V-Ray and the behaviour is the same. I will update the report we have and see if there is some way this can be optimised. Rowan

I noticed the re-parsing earlier when working with bigger VDB files. Would be great If this could be optimized somehow.

Moving VDB volume in interactive very slow + bounding box visible

Corona Corona for 3ds Max Issues

rowan_manns February 19, 2021, 3:45pm 5

Bounding box issue fixed: https://forum.corona-renderer.com/ Corona Renderer 7 for 3ds Max - Daily Builds Changelog #msg182024

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Moving VDB volume in interactive very slow + bounding box visible

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