hair comes out semi blown out on 3.5 but not 3.4 (same settings) #107026

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opened 2023-04-17 10:00:42 +02:00 by alejandro-melgoza · 7 comments

alejandro-melgoza commented

2023-04-17 10:00:42 +02:00

System Information
Operating system: Windows-10-10.0.19045-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 4090/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 531.61

Blender Version
Broken: version: 3.5.0, branch: blender-v3.5-release, commit date: 2023-03-29 02:56, hash: 1be25cfff18b
Worked: (newest version of Blender that worked as expected)

Short description of error
Hair comes out semi blown out on 3.5 but not 3.4 (same settings).

Exact steps for others to reproduce the error
Load up blender 3.3 or 3.4 and press f12 too render and wath it render corectly then try blender 3.5 and watch the magic/disaster unfold.
The folder I send is the same one I'm using same settings.

**System Information** Operating system: Windows-10-10.0.19045-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 4090/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 531.61 **Blender Version** Broken: version: 3.5.0, branch: blender-v3.5-release, commit date: 2023-03-29 02:56, hash: `1be25cfff18b` Worked: (newest version of Blender that worked as expected) **Short description of error** Hair comes out semi blown out on 3.5 but not 3.4 (same settings). **Exact steps for others to reproduce the error** Load up blender 3.3 or 3.4 and press f12 too render and wath it render corectly then try blender 3.5 and watch the magic/disaster unfold. The folder I send is the same one I'm using same settings.

female sculpt character current (2).zip

3.6 MiB

alejandro-melgoza added the

labels 2023-04-17 10:00:43 +02:00

Iliya Katushenock added the

Nodes & Physics

Sculpt, Paint & Texture

labels 2023-04-17 14:01:18 +02:00

Pratik Borhade commented

2023-04-18 07:20:32 +02:00

Member

Hi, thanks for the report.

blender 3.5 and watch the magic/disaster unfold.

I'm seeing some difference in results. Can you confirm whether the attached is the issue? (Asking this to make sure we're on same page)

Hi, thanks for the report. > blender 3.5 and watch the magic/disaster unfold. I'm seeing some difference in results. Can you confirm whether the attached is the issue? (Asking this to make sure we're on same page) ![image](/attachments/f571beba-1c82-47bd-b21a-15d44caf322d)

1.7 MiB

Pratik Borhade added

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labels 2023-04-18 07:20:42 +02:00

alejandro-melgoza commented

2023-04-18 07:24:18 +02:00

Author

Yes that is the exact issue, sorry I totally forgot to add that info i apprise for that.

Yes that is the exact issue, sorry I totally forgot to add that info i apprise for that.

alejandro-melgoza commented

2023-04-18 07:25:22 +02:00

Author

Apologise*

Apologise*

Pratik Borhade commented

2023-04-18 07:41:08 +02:00

Member

Thanks. I can confirm. Though the file and node graph is bit complex for investigation.
Could you simplify it further?
I've cleaned up the file and it seems influence of Shrinkwrap Hair Curves node graph and body collision mask is causing the issue. I Will also bisect.

Thanks. I can confirm. Though the file and node graph is bit complex for investigation. Could you simplify it further? I've cleaned up the file and it seems influence of `Shrinkwrap Hair Curves` node graph and `body collision mask` is causing the issue. I Will also bisect.

Pratik Borhade commented

2023-04-18 07:55:36 +02:00

Member

Did you create this file in 3.5?

Did you create this file in 3.5?

alejandro-melgoza commented

2023-04-18 08:06:34 +02:00

Author

Yes 3.5, I did delete some of the shrink wrap mods as I too suspected them, I checked right now there’s was about 2 left on two layers or hair curbs, I deleted them then rendered and everything seems good, the question is now why does it work in previous versions but not 3.5 and does it still count as a bug? I guess this means I can’t use the mod anymore.

Yes 3.5, I did delete some of the shrink wrap mods as I too suspected them, I checked right now there’s was about 2 left on two layers or hair curbs, I deleted them then rendered and everything seems good, the question is now why does it work in previous versions but not 3.5 and does it still count as a bug? I guess this means I can’t use the mod anymore.

Pratik Borhade commented

2023-04-18 08:26:06 +02:00

Member

Hi, I don't think its working in prior versions either. refer the uploaded file:
In 3.4.1, Long hair 1 collapses if you enable the viewport visibility of Shrinkwrap Hair Curves node. Whereas in 3.5, they are distorted.
If there is some issue regarding transfer of data between nodes then it would be consider as a bug.
Otherwise I'd suggest to ask for help in community channels for "why hairs are distorted and which node to use effectively to fix this."
I'll close this report for now.
Poking @lichtwerk in case I've missed anything (or the taken action is incorrect).

Hi, I don't think its working in prior versions either. refer the uploaded file: In 3.4.1, `Long hair 1` collapses if you enable the viewport visibility of `Shrinkwrap Hair Curves` node. Whereas in 3.5, they are distorted. If there is some issue regarding transfer of data between nodes then it would be consider as a bug. Otherwise I'd suggest to ask for help in community channels for "why hairs are distorted and which node to use effectively to fix this." I'll close this report for now. Poking @lichtwerk in case I've missed anything (or the taken action is incorrect).

F-hair-5.blend

7.4 MiB

Pratik Borhade closed this issue

2023-04-18 08:26:08 +02:00

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