Hair Dynamics Stretching to Mesh #85299

New Issue

Madison · 2021-02-02T02:06:17+01:00

Madison commented

2021-02-02 02:06:17 +01:00

System Information
Operating system: Windows 10 OS Build 18363.1316
Graphics card: RTX 2070

Blender Version
2.91.2

Short description of error
Whenever I try to simulate hair dynamics on the tail or chest fur, they stretch to the original position of the rig. I can't get them to simulate correctly.
However, the cheek fur and whiskers simulate fine. I've checked the modifier stack and the normals, everything appears fine.
I have read elsewhere to switch to shade flat or to play the animation without baking it first, but none of this works.
I can't find a fix that works for me anywhere.

Video of issue:
2021-01-30_19-09-31.mp4

Exact steps for others to reproduce the error

open attached file or:
Model character
Parent to armature
Add hair particles
Edit hair particles
Add density vertex group
Simulate hair dynamics

hair_anim_bug.blend

**System Information** Operating system: Windows 10 OS Build 18363.1316 Graphics card: RTX 2070 **Blender Version** 2.91.2 **Short description of error** Whenever I try to simulate hair dynamics on the tail or chest fur, they stretch to the original position of the rig. I can't get them to simulate correctly. However, the cheek fur and whiskers simulate fine. I've checked the modifier stack and the normals, everything appears fine. I have read elsewhere to switch to shade flat or to play the animation without baking it first, but none of this works. I can't find a fix that works for me anywhere. Video of issue: [2021-01-30_19-09-31.mp4](https://archive.blender.org/developer/F9610576/2021-01-30_19-09-31.mp4) **Exact steps for others to reproduce the error** - open attached file or: - Model character - Parent to armature - Add hair particles - Edit hair particles - Add density vertex group - Simulate hair dynamics [hair_anim_bug.blend](https://archive.blender.org/developer/F9610603/hair_anim_bug.blend)

Madison commented

2021-02-02 02:06:17 +01:00

Added subscriber: @Madison-Ward

Germano Cavalcante commented

2021-02-02 20:17:59 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2021-02-02 20:17:59 +01:00

How to reproduce the problem from the attached file?

How to reproduce the problem from the attached file? ![GIF.gif](https://archive.blender.org/developer/F9609695/GIF.gif)

Madison commented

2021-02-03 05:04:14 +01:00

In #85299#1105987, @mano-wii wrote:
How to reproduce the problem from the attached file?

That is actually the weirdest thing, the file that I uploaded is the one I recorded the video in. Did you change any settings by chance? (I've heard it can be a graphics card issue but I'm not sure)

> In #85299#1105987, @mano-wii wrote: > How to reproduce the problem from the attached file? > ![GIF.gif](https://archive.blender.org/developer/F9609695/GIF.gif) That is actually the weirdest thing, the file that I uploaded is the one I recorded the video in. Did you change any settings by chance? (I've heard it can be a graphics card issue but I'm not sure)

Madison commented

2021-02-03 05:04:41 +01:00

Do you have hair dynamics turned on? It doesn't look like the hair is moving.

Germano Cavalcante commented

2021-02-03 14:29:15 +01:00

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

Germano Cavalcante commented

2021-02-03 14:30:05 +01:00

I can confirm the problem and edit the description.

I confirmed it as a bug, but I'm not sure. the file may be corrupted.

I can confirm the problem and edit the description. I confirmed it as a bug, but I'm not sure. the file may be corrupted.

Madison commented

2021-02-03 20:31:29 +01:00

It does it on some of my other models as well, not just this one, but some work fine even though I set it up the exact same way.

Philipp Oeser removed the

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Hair Dynamics Stretching to Mesh #85299