Hi all. I have VDB fire imported from Embergen. And it doesn’t show up in Path Tracing. I know that I need to enter the command r.pathtracing.heterogeneous volumes 1 but after that nothing changes, the VDB is still not visible.
I’m having the same exact issue. Have you found a solution?
Any updates on this?? I can’t find anything anywhere. The ‘ r.pathtracing.heterogeneous volumes’ command isn’t even listed as a real variable anymore.
Hey there! Happening to me too. The command doesn’t appear as well. Hope there is a solution!
hello, i need the solution for this exact same problem
you have something???
found solution?
What version of the engine are you on?
5.4.4
I would say it should just work but there are a couple of required controls to juggle the shading rate and the memory usage.
The defaults are:
r.HeterogeneousVolumes.FrustumGrid.ShadingRate 4 r.HeterogeneousVolumes.FrustumGrid.MaxBottomLevelMemoryInMegabytes 128
Lowering the shading rate takes the HV voxels closer to the size of a pixel (1), but each halving of the shading rate incurs a 4X increase in voxel density and required memory. If you haven’t allocated enough memory, the volume builder just drops the voxels [the result being that dropped voxels simply disappear].
