Hi, I have heard that Nano VDB is very powerful and I would like to import the smoke simulated in Houdini and render in Omniverse.
I have follow the document of using Nano VDB and I sucessfully import the VDB file.
However, through this method, Omniverse can only read one VDB file at a time.
For example, for 60 frames smoke simulation, I will export 60 continuous VDB files from Houdini.
Can I import these continuous smoke simulation VDB files into Omniverse? Or I can just read one VDB file at a time?
Do you have any suggested method that can import the whole simulation into Omniverse?
Hello @qazpolity! Thanks for your question. I need to reach out to the development team to get an answer for you. I will post back here as soon as I hear back!
Do you have the file or video provided by Andrew? Would you like to share with me?
I export the VDB as USDA file and import into Omniverse.
However, I just see the bounding box of volume (which is moving by timeline).
Maybe it’s the problem of material. I have no idea how to make the volume visible.
I would like to learn how to it setup.
Hello @qazpolity! After discussing this with the development team, they had a suggestion for you to try:
One way how to do this is a bit hacky but it’s possible. You have add a cube to the stage and add a OmniVdbVolume material to it. Then save the stage as usda. Open the usda in a text editor and add the subsequent vdb’s to the list under the volume material node. You’ll have to add this line where I have it in the screenshot: asset inputs:volume_density_texture.timeSamples = { There might be a new workflow but this is how I’ve done it to this point.
