Ok so I have been pulling my hair out trying to nail down the best work flow for this….

I have an obj with accurate UV's. I import the obj into Houdini, do my simulation ( a relatively simple fracture dynamic) and export it out as an alembic and back into C4D for rendering. Somewhere along the UV's get lost and I have no idea why. If anyone knows a better (more stable) workflow please let me know. If anyone knows if there's a way of keeping uvs within Houdini during fracture also let me know. If anyone knows if its alembic export that messes this up let me know. all help as always would be greatly appreciated.


ps The digital asset route doesnt work for me due my amateur houdini build.

UVs are preserved during fracturing in Houdini, however you'll need to project UVs on any new geometry the fracture process creates. It's hard to say what's happening without a look at your hip file but it's a good guess that there's something going on with the alembic import into C4D

Have you checked importing the Alembic back into Houdini to check if UVs are there? I'm going through a similar problem now but in 3dsmax. One tip: when you import back into Houdini through Alembic SOP the vertex attributes (where UVs are stored) in the Geometry Spreadsheet probably will still be missing (because of that I wasted like an hour) - you have to Unpack it first! I can see all my attributes comming back, but I don't have any idea how to “unpack” in 3dsmax so it sees the UVs. Going insane here…