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].
did not work, can ue work with flame attribute in path tracing, just seeems to me that does not.
For example this fire can not be seen in pt
Thank You so much! I spent hours to find out why my vdb-s are pixelated in pathtrace mode.