Brush Stroke Directionality Issue #116711

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opened 2024-01-02 16:00:11 +01:00 by Vadym-Kharchenko · 13 comments

Vadym-Kharchenko commented

2024-01-02 16:00:11 +01:00

System Information
Operating system: Windows-11 64 Bits
Graphics card: NVIDIA GeForce RTX 4080/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 546.33

Blender Version
Broken: version: 4.0.2, branch: blender-v4.0-release, commit date: 2023-12-05 07:41, hash: 9be62e85b727
Worked: (newest version of Blender that worked as expected)

Short description of error
This happens with Clay Strips while drawing with small radius of the brush. Brush Stroke doesn't follow the direction of the brush unless you increase the size of the brush or zoom in to the sculpting area.

Exact steps for others to reproduce the error

Select Clay Strips
Make Brush size small (Radius 0.26 cm in my case)
Start drawing the circle (You should see that the alpha of the brush doesn't rotates along the directionality of the movement)
Now increase the size of the brush or zoom in to the area you are sculpting and draw the circle again. (You should see that stroke alpha of the brush started to follow the directionality of the brush

**System Information** Operating system: Windows-11 64 Bits Graphics card: NVIDIA GeForce RTX 4080/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 546.33 **Blender Version** Broken: version: 4.0.2, branch: blender-v4.0-release, commit date: 2023-12-05 07:41, hash: `9be62e85b727` Worked: (newest version of Blender that worked as expected) **Short description of error** This happens with Clay Strips while drawing with small radius of the brush. Brush Stroke doesn't follow the direction of the brush unless you increase the size of the brush or zoom in to the sculpting area. **Exact steps for others to reproduce the error** 1. Select Clay Strips 2. Make Brush size small (Radius 0.26 cm in my case) 3. Start drawing the circle (You should see that the alpha of the brush doesn't rotates along the directionality of the movement) 4. Now increase the size of the brush or zoom in to the area you are sculpting and draw the circle again. (You should see that stroke alpha of the brush started to follow the directionality of the brush

Desktop 2024.01.02 - 16.09.43.01-00.02.04.353-00.02.23.842.mp4

7.7 MiB

Vadym-Kharchenko added the

labels 2024-01-02 16:00:12 +01:00

Iliya Katushenock added the

Sculpt, Paint & Texture

label 2024-01-02 17:16:53 +01:00

Iliya Katushenock commented

2024-01-02 17:18:29 +01:00

Member

This issue looks like #116418.

This issue looks like #116418.

Julien Kaspar commented

2024-01-02 17:32:08 +01:00

Member

I can't reproduce the issue. I don't think it's the same as #116418.

The example video has heavily altered brush settings. It would be best to share an example file.
I tried replicating the setup but for me the brush tip rotation works.

I can't reproduce the issue. I don't think it's the same as #116418. The example video has heavily altered brush settings. It would be best to share an example file. I tried replicating the setup but for me the brush tip rotation works.

Julien Kaspar added

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labels 2024-01-02 17:33:40 +01:00

Vadym-Kharchenko commented

2024-01-03 11:29:15 +01:00

Author

No description provided.

13 MiB

Vadym-Kharchenko commented

2024-01-03 11:39:36 +01:00

Author

Here is another video of a bug but in this case i'm usind a mouse to exclude Wacom Tablet Issue

Here is another video of a bug but in this case i'm usind a mouse to exclude Wacom Tablet Issue

Desktop 2024.01.03 - 12.35.42.01.mp4

16 MiB

Julien Kaspar commented

2024-01-03 11:39:41 +01:00

Member

I can replicate the issue in the example file but I don't know what's causing it yet.
No brush setting I changed is altering the bug. Applying the modifier or changing the scene settings also didn't fix it.

The issue doesn't seem to be that the brush rotation is static, but that it's occasionally jittering ot getting stuck in 45 degree angles.

I can replicate the issue in the example file but I don't know what's causing it yet. No brush setting I changed is altering the bug. Applying the modifier or changing the scene settings also didn't fix it. The issue doesn't seem to be that the brush rotation is static, but that it's occasionally jittering ot getting stuck in 45 degree angles.

Julien Kaspar added

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labels 2024-01-03 11:39:52 +01:00

Vadym-Kharchenko commented

2024-01-03 11:48:11 +01:00

Author

Oh, yes. The occasional jittering was happening as well but it stopped after some time.

Oh, yes. The occasional jittering was happening as well but it stopped after some time.

Julien Kaspar commented

2024-01-03 11:55:59 +01:00

Member

Ideally what's needed now is a way to reproduce this in a default startup file. Or maybe a developer knows more what could be going on here.

Ideally what's needed now is a way to reproduce this in a default startup file. Or maybe a developer knows more what could be going on here.

Vadym-Kharchenko commented

2024-01-03 13:04:55 +01:00

Author

I've created fresh scene, imported my mesh via OBJ and FBX and brushes started to work correctly. So it's the problem with Blender's GoB addon

I've created fresh scene, imported my mesh via OBJ and FBX and brushes started to work correctly. So it's the problem with Blender's GoB addon

Vadym-Kharchenko commented

2024-01-03 14:18:52 +01:00

Author

No, I am taking my words back. It started to glitch again. I think the culprit is the scale of the object. I'll try to sculpt on the small scaled head

No, I am taking my words back. It started to glitch again. I think the culprit is the scale of the object. I'll try to sculpt on the small scaled head

Vadym-Kharchenko commented

2024-01-03 14:33:07 +01:00

Author

Yes. It works correctly on the head which was imported with 0.1 scale and glitches on the actual sized head

Yes. It works correctly on the head which was imported with 0.1 scale and glitches on the actual sized head

Julien Kaspar commented

2024-01-03 15:28:04 +01:00

Member

I can reproduce the bug on a startup file. The further away the mesh is from the world origin, the more the brush rotation begins to jitter and fail.
Anything above 1000 units should be enough.

I can reproduce the bug on a startup file. The further away the mesh is from the world origin, the more the brush rotation begins to jitter and fail. Anything above 1000 units should be enough.

Julien Kaspar added

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labels 2024-01-03 15:28:26 +01:00

Vadym-Kharchenko commented

2024-01-03 20:09:01 +01:00

Author

I've discovered another bug. If you move my actual size head to the center of the world it fixes problem with clay strips but insted Draw brush stops working at all

I've discovered another bug. If you move my actual size head to the center of the world it fixes problem with clay strips but insted Draw brush stops working at all

Vadym-Kharchenko commented

2024-01-03 20:19:56 +01:00

Author

I created new scene, imported actual sized head, moved it to the center of the world and Draw Brush started to work correctly, Clay Strips working as well

I created new scene, imported actual sized head, moved it to the center of the world and Draw Brush started to work correctly, Clay Strips working as well

Jesse Yurkovich added

Sculpt, Paint & Texture

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Sculpt, Paint & Texture

labels 2024-01-04 06:38:53 +01:00

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Reference: blender/blender#116711

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