Hi all, I have a heightfield object that I've generated using an approach similar to the Project Pegasus pipeline. I am at the point of trying to get it to import into Unreal 5.4 using Houdini Engine, and can't get it to show up. I've tried several things.

My current .hda is referencing a file cache of the combined and eroded heightfields. It resamples the heightfield, remaps it to the height range I want, and pipes to an output.

I try rebuilding and recooking the asset in Unreal, but nothing is shown. I've wired a polygon sphere to the output of the .hda to confirm the pipeline works and the sphere shows up in Unreal.

The heightfield has mask and height layers on its primitives, as required (along with bedrock, sediment, debris, and water layers from the erode nodes).

The heightfield shows up in my geo context.

Any advice on where to look for specifics about what Unreal needs for import? My ultimate goal is to use World Partition and my terrain generation .hda. Currently the terrain is 4000x4000 meters, but I would like to know how to segment it if needed for larger sets.

I've watched through the Project Pegasus video tutorials, and downloaded the example files, but I don't see where the differences are between mine and theirs. I also don't want to use exactly their pipeline, so if there is good text documentation about how to currently import heightfields into Unreal, please share if you have time.

I've attached the hda, but it references a large cached heightfield. Any plugged in heightfield should work as a proxy.

One note on this. It looks like a bare heightfield can be attached and it works on import. Is there something I'm doing wrong with the file cache?

Change the 'File Path' from Constructed to Explicit and expose 'File Path' to your HDA. In unreal make sure for the 'File path' you dont use $HIP or $JOB as unreal doesnt know what to do with it. Just manually enter path in Unreal