Rigged mesh heavily distorted when exported to FBX #88629

New Issue

irex124 · 2021-05-27T16:51:05+02:00

irex124 commented

2021-05-27 16:51:05 +02:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 2060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 466.47

Blender Version
Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-05-26 18:32, hash: blender/blender@2c607ec2f6
Worked: (newest version of Blender that worked as expected)

Short description of error
This fbx was exported around Sunday/Monday this week and has no such issues :
Export_Working.fbx
I don't have a separate backup of the blend file of that time but instead kept working on the original and now it has issues when exporting :

Exact steps for others to reproduce the error
Original Blendfile :
Original_File.blend
Export the contents of the above file as FBX or just import this file in blender :
Export_Not_Working.fbx

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 2060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 466.47 **Blender Version** Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-05-26 18:32, hash: `blender/blender@2c607ec2f6` Worked: (newest version of Blender that worked as expected) **Short description of error** This fbx was exported around Sunday/Monday this week and has no such issues : [Export_Working.fbx](https://archive.blender.org/developer/F10145046/Export_Working.fbx) I don't have a separate backup of the blend file of that time but instead kept working on the original and now it has issues when exporting : ![image.png](https://archive.blender.org/developer/F10145037/image.png) **Exact steps for others to reproduce the error** Original Blendfile : [Original_File.blend](https://archive.blender.org/developer/F10145045/Original_File.blend) Export the contents of the above file as FBX or just import this file in blender : [Export_Not_Working.fbx](https://archive.blender.org/developer/F10145051/Export_Not_Working.fbx)

irex124 commented

2021-05-27 16:51:05 +02:00

Added subscriber: @Pasang

Omar Emara commented

2022-03-08 12:39:12 +01:00

Added subscriber: @OmarEmaraDev

Omar Emara commented

2022-03-08 12:39:12 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Omar Emara commented

2022-03-08 12:39:12 +01:00

When use_mesh_modifiers is true and a material slot is linked with the object (And hence is_ob_material is true and use_org_data is false), the armature modifier will be applied on the mesh but will be retained on the object. So the mesh will no longer be in its rest position and the armature modifier will perform an extra deformation causing the distortion.

When `use_mesh_modifiers` is true and a material slot is linked with the object (And hence `is_ob_material` is true and `use_org_data` is false), the armature modifier will be applied on the mesh but will be retained on the object. So the mesh will no longer be in its rest position and the armature modifier will perform an extra deformation causing the distortion.

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Rigged mesh heavily distorted when exported to FBX #88629