FBX and Alembic export does not support instances anymore #49458

New Issue

Daniel Bystedt · 2016-09-26T21:13:26+02:00

Daniel Bystedt commented

2016-09-26 21:13:26 +02:00

System Information
windows 7
nvidia GeForce GTX 660

Blender Version
Broken: 7c53260
works: 2.77 official release abf6f08

When I export multiple object that share the same object data (in other word is instances) the object data connection is lost. After I import the fbx or alembic to blender or maya the object data connection is lost. The objects are not instances anylonger.

Exact steps for others to reproduce the error
Based on a (as simple as possible) attached .blend file with minimum amount of steps

press file>export>fbx/alembic and export to disc
Open new scene in blender or other application
press file>import>fbx/alembic and select the source file
Try to remodel one of the objects. You can now see that they no longer are instances
instance.blend

**System Information** windows 7 nvidia GeForce GTX 660 **Blender Version** Broken: 7c53260 works: 2.77 official release abf6f08 When I export multiple object that share the same object data (in other word is instances) the object data connection is lost. After I import the fbx or alembic to blender or maya the object data connection is lost. The objects are not instances anylonger. **Exact steps for others to reproduce the error** Based on a (as simple as possible) attached .blend file with minimum amount of steps 1. press file>export>fbx/alembic and export to disc 2. Open new scene in blender or other application 3. press file>import>fbx/alembic and select the source file 4. Try to remodel one of the objects. You can now see that they no longer are instances [instance.blend](https://archive.blender.org/developer/F368717/instance.blend)

Daniel Bystedt commented

2016-09-26 21:13:26 +02:00

Changed status to: 'Open'

Daniel Bystedt commented

2016-09-26 21:13:26 +02:00

Added subscriber: @DanielBystedt

Kévin Dietrich commented

2016-09-26 21:38:30 +02:00

Added subscribers: @mont29, @kevindietrich

Kévin Dietrich commented

2016-09-26 21:38:30 +02:00

Instancing is not, and was never, supported in the Alembic exporter and Alembic is new so I would hardly call it a regression or even a bug. There is also the issue of supporting instancing in the importer (not sure how that would work, given that files might come from software, etc...). So I guess we would have to poke @mont29 for the FBX case.

Bastien Montagne commented

2016-09-27 10:07:49 +02:00

Can’t confirm that here for FBX, it does export and re-import as a single mesh… Are you sure you are using correct version of FBX addon (should be 3.7.7)?

Daniel Bystedt commented

2016-09-28 01:53:29 +02:00

Changed status from 'Open' to: 'Archived'

Daniel Bystedt closed this issue

2016-09-28 01:53:29 +02:00

Daniel Bystedt self-assigned this 2016-09-28 01:53:29 +02:00

Daniel Bystedt commented

2016-09-28 01:53:29 +02:00

Done some research

Alembic in maya does not seem to support instances either

FBX with instances now suddenly works. It failed both at work and at home, but now it works so I must have used some strange setting. Can't reproduce the error again.

So sorry for waisting your time, guys. Keep up the good work. I've set this report to "invalid"

/Bystedt

Done some research Alembic in maya does not seem to support instances either FBX with instances now suddenly works. It failed both at work and at home, but now it works so I must have used some strange setting. Can't reproduce the error again. So sorry for waisting your time, guys. Keep up the good work. I've set this report to "invalid" /Bystedt

Bastien Montagne commented

2016-09-28 08:08:08 +02:00

Just a note about FBX and instances: if you have modifiers on your objects and export them in FBX, then you obviously export one different mesh per object, maybe that’s what happened for you?

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FBX and Alembic export does not support instances anymore #49458