Does subsampled vel work with VDBs yet?
Hey @Dubbie99 ,
Apologies for the late reply - I just now saw the thread while browsing the forum.
The R&D team have been busy working on anisotropic scattering and support for render elements in Volumetric mode - we still haven’t had the chance to add subsampled vel support.
In case it’s the look that is produced with a subsampled velocity channel that you are after, you could use the VDB Smooth SOP to give the velocity channel a couple of smoothing iterations.
Hope that helps!
It’s more about that downsampled velocity significantly reduces the cache size.
Hristo is right.
You can cut your cache sizes to less than 1/3 the size by subsampling the velocity with virtually no effect on the render.
Uncessesarily large caches are very expensive in disk space and time.
I think this should be treated as a high priority item. It will help more people than the other features (Although they will be very welcome too!)
I asked for this a while back. So hopefully it gets done now.