USD doesn't import animation #110076

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opened 2023-07-13 20:44:20 +02:00 by STman3D · 5 comments

STman3D commented

2023-07-13 20:44:20 +02:00

System Information
Operating system: Windows 10
Graphics card: GTX 2060 mobile

Blender Version
Broken: 3.6
Worked: #

Short description of error
No animation when importing skeleton animated USD.
Although if you watch this video, everything worked fine https://youtu.be/dGU7ot25P9M?t=224
Tried different versions Blender 3.0, 3.4, 4.0 - animation does not appear anywhere.

Based on documentation https://docs.blender.org/manual/en/latest/files/import_export/usd.html#animations
guess should be created Transform Cache, but it doesn't happen.

Exact steps for others to reproduce the error

Download https://developer.apple.com/augmented-reality/quick-look/models/drummertoy/toy_drummer_idle.usdz
Blender > File > Import > Universal Scene Description (usd*)
Play Animation

**System Information** Operating system: Windows 10 Graphics card: GTX 2060 mobile **Blender Version** Broken: 3.6 Worked: # **Short description of error** No animation when importing skeleton animated USD. Although if you watch this video, everything worked fine https://youtu.be/dGU7ot25P9M?t=224 Tried different versions Blender 3.0, 3.4, 4.0 - animation does not appear anywhere. Based on documentation https://docs.blender.org/manual/en/latest/files/import_export/usd.html#animations guess should be created Transform Cache, but it doesn't happen. **Exact steps for others to reproduce the error** 1. Download https://developer.apple.com/augmented-reality/quick-look/models/drummertoy/toy_drummer_idle.usdz 2. Blender > File > Import > Universal Scene Description (usd*) 3. Play Animation

STman3D added the

labels 2023-07-13 20:44:20 +02:00

YimingWu changed title from ~~USD import animation skeleton~~ to USD doesn't import animation

2023-07-17 06:13:46 +02:00

YimingWu commented

2023-07-17 06:16:49 +02:00

Member

For me this file imported into blender without animation, neither transform cache or mesh sequence is present. Not sure if it's the file's problem.

@makowalski Could you take a look?

For me this file imported into blender without animation, neither transform cache or mesh sequence is present. Not sure if it's the file's problem. @makowalski Could you take a look?

YimingWu added

Pipeline, Assets & IO

Pipeline, Assets & IO

and removed

labels 2023-07-17 06:17:06 +02:00

Michael Kowalski commented

2023-07-17 16:20:26 +02:00

Member

This USD has skeletal animation, which isn't currently supported in the USD importer. UsdSkel IO is implemented in the universal-scene-description branch and I confirmed the animation loads in that branch. I'm currently working on porting the UsdSkel conversion code to the main branch and this feature will hopefully be available for Blender 4.0. I will update this thread with more information once I've created the UsdSkel import pull request.

This USD has skeletal animation, which isn't currently supported in the USD importer. `UsdSkel` IO is implemented in the `universal-scene-description` branch and I confirmed the animation loads in that branch. I'm currently working on porting the `UsdSkel` conversion code to the `main` branch and this feature will hopefully be available for Blender 4.0. I will update this thread with more information once I've created the `UsdSkel` import pull request.

STman3D commented

2023-07-18 14:47:14 +02:00

Author

As I understand it, the USD format itself has changed? It used to work before, I corrected the topic and added video timing to YouTube

As I understand it, the USD format itself has changed? It used to work before, I corrected the topic and added video timing to YouTube

Michael Kowalski commented

2023-07-18 16:09:01 +02:00

Member

Yes, that's correct, the animation format for that toy drummer USDZ asset has changed relatively recently. The older version toy_drummer.usdz had animating transforms that could be imported with the Transform Cache. The newer toy_drummer_idle.usdz has a skeletal animation, which requires importing armatures, skinning and animation curves. This will be handled in the UsdSkel import pull request I'm working on.

Yes, that's correct, the animation format for that toy drummer USDZ asset has changed relatively recently. The older version `toy_drummer.usdz` had animating transforms that could be imported with the `Transform Cache`. The newer `toy_drummer_idle.usdz` has a skeletal animation, which requires importing armatures, skinning and animation curves. This will be handled in the `UsdSkel` import pull request I'm working on.

Michael Kowalski added the

label 2023-07-18 16:09:17 +02:00

Michael Kowalski added this to the USD project 2023-07-18 16:09:25 +02:00

Michael Kowalski referenced this issue

2023-08-08 06:42:07 +02:00

USD: Skeleton and blend shape import #110912

Michael Kowalski referenced this issue from a commit

2023-08-17 20:11:58 +02:00

USD: Skeleton and blend shape import

Michael Kowalski commented

2023-08-17 20:31:42 +02:00

Member

This issue should now be addressed with commit 6f4cb9bc56

This issue should now be addressed with commit https://projects.blender.org/blender/blender/commit/6f4cb9bc56e43343ab2a58eade516e5c7dbc77a3

Michael Kowalski closed this issue

2023-08-17 20:32:18 +02:00

Blender Bot added

and removed

labels 2023-08-17 20:32:19 +02:00

Bastien Montagne removed this from the USD project 2023-08-25 23:53:34 +02:00

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