FBX export with instancing

   5097   4   1
User Avatar
Member
26 posts
Joined: June 2015
Offline
Hi,

Is there a way to export an FBX from Houdini with instances instead of unique geometry? A base example would be some scatter points with a cube copy-stamped on it or with the instance node.
The Alembic export is fine with instances, but unfortunately the game I'm trying to import into (Assetto Corsa) only reads FBX files.

Thank you
Bjorn
with kind regards,
Bjorn

Houdini TA @ AAA game-studio
Freelance Houdini @ www.paleopixels.com
User Avatar
Member
2658 posts
Joined: June 2008
Offline
I don't think the FBX file format supports such a feature. It is just a container.
Using Houdini Indie 20.5
Windows 11 64GB Ryzen 16 core.
nVidia 3060RTX 12BG RAM.
User Avatar
Member
135 posts
Joined: July 2007
Offline
Related question: I'm just trying to export my instanced geometry to FBX as separate objects. Export->Filmbox FBX doesn't seem to bake down the instances and include them in the final file.
So, simple example: Drop a box and an Instance node at the top level. Add a grid inside the Instance and then point the instance node at the box. Turn on Fast or Full point instancing.
Whatever I do the resulting FBX doesn't show anything besides a single box, despite having a full grid of them visible in Houdini.
Is this a bug? Or known/expected behavior? I would expect to get something close to what I'm seeing in Houdini, unless this is just one of the limitations of the Instance (obj) node.
Thanks for any thoughts!

-Len
User Avatar
Member
2658 posts
Joined: June 2008
Offline
Maybe drop down a Convert node at the end of your network? Basically undo your instance, converting it back to “real” geometry.
Using Houdini Indie 20.5
Windows 11 64GB Ryzen 16 core.
nVidia 3060RTX 12BG RAM.
User Avatar
Member
135 posts
Joined: July 2007
Offline
Thanks for the idea Enivob.
Though I'm actually transferring those instances to a game engine (Unity) and need the transform data that comes with each one.
  • Quick Links