Modifiers: Bevel modifier uncorrectly interpolates attributes #104288

New Issue

Josef Ludvík Böhm · 2023-02-01T22:06:30+01:00

2023-02-01 22:06:30 +01:00

System Information
Operating system: Windows-10-10.0.22000-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3070 Ti Laptop GPU/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 528.02

Blender Version
Broken: version: 3.4.1, branch: blender-v3.4-release, commit date: 2022-12-19 17:00, hash: 55485cb379
Worked: (newest version of Blender that worked as expected)

Short description of error

If you fill some named attribute on mesh by 1.0f, after Bevel Modifier you will get:

Points	Edges	Faces	Face Corners

Exact steps for others to reproduce the error

Create some mesh with named attribute
Use on this mesh Bevel Modifier
You expect something look like original, but in some cases it will noise
Example file:
bevel_attr_bug_3.5.blend

**System Information** Operating system: Windows-10-10.0.22000-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 3070 Ti Laptop GPU/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 528.02 **Blender Version** Broken: version: 3.4.1, branch: blender-v3.4-release, commit date: 2022-12-19 17:00, hash: `55485cb379` Worked: (newest version of Blender that worked as expected) **Short description of error** If you fill some named attribute on mesh by `1.0f`, after `Bevel Modifier` you will get: | Points | Edges | Faces | Face Corners | | -- | -- | -- | -- | | ![image.png](https://archive.blender.org/developer/F14228811/image.png) | ![image.png](https://archive.blender.org/developer/F14228813/image.png) | ![image.png](https://archive.blender.org/developer/F14228815/image.png) | ![image.png](https://archive.blender.org/developer/F14228817/image.png) | **Exact steps for others to reproduce the error** 1. Create some mesh with named attribute 2. Use on this mesh `Bevel Modifier` You expect something look like original, but in some cases it will noise Example file: [bevel_attr_bug_3.5.blend](https://archive.blender.org/developer/F14228825/bevel_attr_bug_3.5.blend)

Josef Ludvík Böhm commented

2023-02-01 22:06:30 +01:00

Added subscriber: @JLBohm

Josef Ludvík Böhm commented

2023-02-01 22:06:56 +01:00

Example file{F14228752}

Example file{[F14228752](https://archive.blender.org/developer/F14228752/bevel_attr_bug.blend)}

Iliya Katushenock commented

2023-02-01 22:13:54 +01:00

Added subscriber: @mod_moder

Iliya Katushenock commented

2023-02-01 22:13:54 +01:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Iliya Katushenock commented

2023-02-01 22:13:54 +01:00

Hello. Can you reproduce this on new versions of blender?
Please keep the example project as simple as possible.

Hello. Can you reproduce this on new versions of blender? Please keep the example project as simple as possible.

Josef Ludvík Böhm commented

2023-02-01 22:26:20 +01:00

In #104288#1482793, @mod_moder wrote:
Hello. Can you reproduce this on new versions of blender?
Please keep the example project as simple as possible.

Confirmed in master from today (3.5 alpha). adding even simpler example file{F14228776}

> In #104288#1482793, @mod_moder wrote: > Hello. Can you reproduce this on new versions of blender? > Please keep the example project as simple as possible. Confirmed in master from today (3.5 alpha). adding even simpler example file{[F14228776](https://archive.blender.org/developer/F14228776/bevel_attr_bug_3.5.blend)}

Iliya Katushenock changed title from ~~Bevel modifier doesn't fill in custom attributes on edge domain~~ to Modifiers: Bevel modifier uncorrect interpolate attributes

2023-02-01 22:39:54 +01:00

Iliya Katushenock commented

2023-02-01 22:39:54 +01:00

Changed status from 'Needs User Info' to: 'Confirmed'

Philipp Oeser changed title from ~~Modifiers: Bevel modifier uncorrect interpolate attributes~~ to Modifiers: Bevel modifier uncorrectly interpolates attributes

2023-02-02 10:54:42 +01:00

Philipp Oeser commented

2023-02-02 10:55:38 +01:00

Added subscribers: @HooglyBoogly, @JacquesLucke, @lichtwerk

Philipp Oeser commented

2023-02-02 10:55:38 +01:00

CC @JacquesLucke
CC @HooglyBoogly

CC @JacquesLucke CC @HooglyBoogly

Jacques Lucke commented

2023-02-02 16:46:34 +01:00

Added subscriber: @howardt

Jacques Lucke commented

2023-02-02 16:46:34 +01:00

I'd guess that proper propagation of attributes on some domains just hasn't been implemented for bevel yet. Not sure how much pointer there is for Hans and me to look into that (unless it worked before). It's more likely something for people working on bevel like @howardt.

Hans Goudey commented

2023-02-02 16:58:46 +01:00

Since bevel is being re-implemented from the ground up as a new geometry node, I think this report should be closed unless it's a regression.

Iliya Katushenock commented

2023-02-02 17:01:40 +01:00

I did not find when it would work differently (up to 3.0)

Hans Goudey commented

2023-02-02 17:05:35 +01:00

Changed status from 'Confirmed' to: 'Archived'

Hans Goudey closed this issue

2023-02-02 17:05:35 +01:00

Hans Goudey commented

2023-02-02 17:05:35 +01:00

Okay, I'll close this report as a feature request then. I expect the new bevel implementation will have more explicit handling of generic attribute interpolation in general.

Iliya Katushenock referenced this issue

2023-02-21 13:40:32 +01:00

Vertex weight not carried through bevel modifier #105012

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Modifiers: Bevel modifier uncorrectly interpolates attributes #104288