shapekeys relative to other shapekeys that are NOT the initial basis shapekey become distorted when importing a file that was previously exported #99250

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mark · 2022-06-28T21:59:33+02:00

mark commented

2022-06-28 21:59:33 +02:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: AMD Radeon(TM) R4 Graphics ATI Technologies Inc. 4.5.13547 Core Profile Context 25.20.15018.12

Blender Version
Broken: version: 2.93.5, branch: master, commit date: 2021-10-05 12:04, hash: blender/blender@a791bdabd0
Worked: (newest version of Blender that worked as expected)

Addon Information
Name: FBX format (4, 36, 0)
Author: Campbell Barton, Bastien Montagne, Jens Restemeier

Short description of error
I was importing a backup file when i made a mistake and found the shapekeys that are relative to other shapekeys were distorted. This only happens when importing

Exact steps for others to reproduce the error

Open attached file or
- Create or open a complex mesh
- Create 2 different shapekeys that are completely different in appearance, the first being the basis, and change the appearance of the second in edit mode
- Select second shapekey, open the tiny V menu on the right of the window and click New shapekey from mix
- In edit mode, change the appearance of the third new shapekey just enough that it is still similar to the second but totally different from the first
- While still selecting the third shapekey, change the selected shapekey under 'relative to' to the second shapekey that you duplicated it from
save and export the file as an FBX. (This is the primary file i have been using. i cannot account for the others.)
reimport the file you just exported and move the object file alongside its original to compare
view the third shapekey on both objects and you will notice they are not at all identical
fbx_shapekeys_bug.blend

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: AMD Radeon(TM) R4 Graphics ATI Technologies Inc. 4.5.13547 Core Profile Context 25.20.15018.12 **Blender Version** Broken: version: 2.93.5, branch: master, commit date: 2021-10-05 12:04, hash: `blender/blender@a791bdabd0` Worked: (newest version of Blender that worked as expected) **Addon Information** Name: FBX format (4, 36, 0) Author: Campbell Barton, Bastien Montagne, Jens Restemeier **Short description of error** I was importing a backup file when i made a mistake and found the shapekeys that are relative to other shapekeys were distorted. This only happens when importing **Exact steps for others to reproduce the error** - Open attached file or - Create or open a complex mesh - Create 2 different shapekeys that are completely different in appearance, the first being the basis, and change the appearance of the second in edit mode - Select second shapekey, open the tiny **V** menu on the right of the window and click New shapekey from mix - In edit mode, change the appearance of the third new shapekey just enough that it is still similar to the second but totally different from the first - While still selecting the third shapekey, change the selected shapekey under 'relative to' to the second shapekey that you duplicated it from - save and export the file as an FBX. (This is the primary file i have been using. i cannot account for the others.) - reimport the file you just exported and move the object file alongside its original to compare - view the third shapekey on both objects and you will notice they are not at all identical [fbx_shapekeys_bug.blend](https://archive.blender.org/developer/F13238508/fbx_shapekeys_bug.blend)

mark commented

2022-06-28 21:59:33 +02:00

Added subscriber: @Emwardicus