Maniphest T46019

Blender fbx does not export normals correctly for blendshapes
Confirmed, NormalTO DO
Actions

Assigned To
None
Authored By
David O'Sullivan (davidosullivan)
Sep 5 2015, 2:42 AM
Tags
  • Import/Export
  • Add-ons (BF-Blender)
  • BF Blender
Subscribers
Bastien Montagne (mont29)
David O'Sullivan (davidosullivan)
Doug Richardson (doug)
Julien Soler (superpingu)
Sergey Sharybin (sergey)

Description

System Information
Win7 x64

Blender Version
Broken: 2.75
Worked: (optional)

Short description of error
When exporting a model that has blendshapes as fbx, the resulting model does not get the correct normals, it only seems to get the normals from the base shape rather than the normals it should get when the blendshape is applied.

Exact steps for others to reproduce the error
For more details and example photos please see here http://forum.unity3d.com/threads/uma-unity-multipurpose-avatar-on-the-asset-store.219175/page-67#post-2281165

Related Objects

Mentioned In
T68575: FBX Known issues & TODO's
D1510: Add functions to compute normals (verts, polys and loops ones) for a given shapekey.
rB8c5c083acc7a: Add functions to compute normals (verts, polys and loops ones) for a given…
Mentioned Here
rBcdd727b7ceab: Add functions to compute normals (verts, polys and loops ones) for a given…

Event Timeline

David O'Sullivan (davidosullivan) created this task.Sep 5 2015, 2:42 AM
David O'Sullivan (davidosullivan) raised the priority of this task from to 90.
David O'Sullivan (davidosullivan) updated the task description.
David O'Sullivan (davidosullivan) added a project: BF Blender.
David O'Sullivan (davidosullivan) edited a custom field.
David O'Sullivan (davidosullivan) added a subscriber: David O'Sullivan (davidosullivan).
Aaron Carlisle (Blendify) claimed this task.Sep 5 2015, 4:34 AM
Aaron Carlisle (Blendify) reassigned this task from Aaron Carlisle (Blendify) to Bastien Montagne (mont29).
Aaron Carlisle (Blendify) edited projects, added Add-ons (Community), Import/Export; removed BF Blender.
Sergey Sharybin (sergey) lowered the priority of this task from 90 to 30.Sep 5 2015, 5:05 PM
Sergey Sharybin (sergey) added a subscriber: Sergey Sharybin (sergey).

Please always attach small /blend file which demonstrated the issue.

Bastien Montagne (mont29) added a comment.Sep 7 2015, 12:09 PM

And please stop linking to forums posts in reports! We need all relevant info here, not on some random remote place that may go offline or break links at any time!

Bastien Montagne (mont29) changed the task status from Unknown Status to Unknown Status.Sep 7 2015, 2:30 PM

Actually, this is not a bug, but rather a TODO (we have no way to access normals from a shape-key currently in Blender, will add that but this does not qualifies as a bug - and cannot be added to master that close of a release).

Bastien Montagne (mont29) mentioned this in rB8c5c083acc7a: Add functions to compute normals (verts, polys and loops ones) for a given….Sep 7 2015, 8:14 PM
Bastien Montagne (mont29) mentioned this in D1510: Add functions to compute normals (verts, polys and loops ones) for a given shapekey..Sep 7 2015, 8:14 PM
Julien Soler (superpingu) added a subscriber: Julien Soler (superpingu).EditedJun 15 2017, 2:35 PM

This problem still seems to be present in 2.78c. Normals of blend shapes still are the ones of the base shape. I tried both in binary and ascii.

Bastien Montagne (mont29) changed the task status from Unknown Status to Unknown Status.Jun 15 2017, 2:51 PM
Bastien Montagne (mont29) raised the priority of this task from 30 to 50.
Bastien Montagne (mont29) edited a custom field.

Yeah… actually, correct commit now Blender-side is rBcdd727b7ceab5772503b702322e93620b7df651b (seems like there were some history rewriting :| ).

Re-opened and moved as TODO task.

Bastien Montagne (mont29) removed Bastien Montagne (mont29) as the assignee of this task.Aug 12 2019, 4:00 PM
Bastien Montagne (mont29) added a subscriber: Bastien Montagne (mont29).
Bastien Montagne (mont29) mentioned this in T68575: FBX Known issues & TODO's.Aug 12 2019, 4:10 PM
Doug Richardson (doug) added a subscriber: Doug Richardson (doug).Nov 12 2019, 6:41 AM
Campbell Barton (campbellbarton) moved this task from Backlog to Bugs (BF-Blender) on the Add-ons (Community) board.Jun 19 2020, 9:13 AM
Campbell Barton (campbellbarton) edited projects, added Add-ons (BF-Blender); removed Add-ons (Community).Jun 19 2020, 12:08 PM
Campbell Barton (campbellbarton) moved this task from Backlog to Long Term on the Add-ons (BF-Blender) board.Jun 22 2020, 7:16 AM
Campbell Barton (campbellbarton) added a project: BF Blender.Jun 22 2020, 7:20 AM