"smooth by angle" splits edges #119921

New Issue

Closed

opened 2024-03-26 15:43:57 +01:00 by Sindre-t · 8 comments

Sindre-t commented

2024-03-26 15:43:57 +01:00

Blender Version
Broken: version: 4.1.0 Release Candidate, branch: blender-v4.1-release, commit date: 2024-03-22 19:59, hash: 64bfe491645f
Worked: (newest version of Blender that worked as expected)

Short description of error
If I use the "smooth by angle" in my modifier stack, my edges get split, this appears for me only in render mode using a UV mapped displacement

To reproduce just do this

**Blender Version** Broken: version: 4.1.0 Release Candidate, branch: blender-v4.1-release, commit date: 2024-03-22 19:59, hash: `64bfe491645f` Worked: (newest version of Blender that worked as expected) **Short description of error** If I use the "smooth by angle" in my modifier stack, my edges get split, this appears for me only in render mode using a UV mapped displacement To reproduce just do this

DisplErrorReplicated.blend

979 KiB

Sindre-t added the

labels 2024-03-26 15:43:58 +01:00

Iliya Katushenock added the

labels 2024-03-26 15:47:59 +01:00

Iliya Katushenock commented

2024-03-26 15:48:32 +01:00

Member

Thanks for report, please, share some simple example file.

Thanks for report, please, share some simple example file.

Sindre-t commented

2024-03-26 17:16:09 +01:00

Author

Updated now, it works in 4.0, its broken in 4.1

Updated now, it works in 4.0, its broken in 4.1

Germano Cavalcante commented

2024-03-26 18:49:37 +01:00

Member

@Sindre-t, I'm having difficulty understanding the problem you're experiencing.
From what I could test, the results in versions 4.1 and 4.2 appear to be correct.
In fact, I was able to identify an issue in version 4.0, but when I adjusted the AutoSmooth properties, I was able to achieve the expected result.

Could you please provide more specific details on the issue? Note in the modifier that you set a Maximum face angle for smooth edges. (See https://docs.blender.org/manual/en/4.2/scene_layout/object/editing/shading.html#shade-smooth-by-angle).

Please note that version 4.0 is no longer receiving bug fixes. If you encounter any issues, it is recommended to update to a newer version.

@Sindre-t, I'm having difficulty understanding the problem you're experiencing. From what I could test, the results in versions 4.1 and 4.2 appear to be correct. In fact, I was able to identify an issue in version 4.0, but when I adjusted the AutoSmooth properties, I was able to achieve the expected result. Could you please provide more specific details on the issue? Note in the modifier that you set a `Maximum face angle for smooth edges`. (See https://docs.blender.org/manual/en/4.2/scene_layout/object/editing/shading.html#shade-smooth-by-angle). Please note that version 4.0 is no longer receiving bug fixes. If you encounter any issues, it is recommended to update to a newer version.

Germano Cavalcante added

Needs Information from User

and removed

labels 2024-03-26 18:49:47 +01:00

Sindre-t commented

2024-03-27 00:22:56 +01:00

Author

I am able to perfectly replicate the error on another computer using the same steps. Using a subdivided cube with shade smooth and the new "smooth by angle" modifier (or just marked sharp I noticed now). The edges appears as if they are split using a displacement map when in rendered view in cycles. In my example I am using a standard cube. I replicated the model in geometry nodes to show that nothing is split manually.
This should not happen right?
I saw that the Blender 4.1 just got released and the same thing happens there.

I am able to perfectly replicate the error on another computer using the same steps. Using a subdivided cube with shade smooth and the new "smooth by angle" modifier (or just marked sharp I noticed now). The edges appears as if they are split using a displacement map when in rendered view in cycles. In my example I am using a standard cube. I replicated the model in geometry nodes to show that nothing is split manually. This should not happen right? I saw that the Blender 4.1 just got released and the same thing happens there.

errorReplicated.blend

1.8 MiB

631 KiB

Germano Cavalcante added

and removed

Needs Information from User

labels 2024-03-27 00:43:52 +01:00

Germano Cavalcante commented

2024-03-27 02:43:08 +01:00

Member

Even though does not seem ideal in some cases. It's always worked like this in Cycles.
See Blender 2.79 for example:

Therefore, this behavior is expected, so closing.

You can try other channels for user requests and feedback if you prefer.

Even though does not seem ideal in some cases. It's always worked like this in Cycles. See Blender 2.79 for example: ![image](/attachments/6601d539-556c-4008-a80e-e4c7d386f815) Therefore, this behavior is expected, so closing. You can try other channels for [user requests and feedback](https://wiki.blender.org/wiki/Communication/Contact#User_Feedback_and_Requests) if you prefer.

180 KiB

Germano Cavalcante closed this issue

2024-03-27 02:43:12 +01:00

Blender Bot added

and removed

labels 2024-03-27 02:43:14 +01:00

Sindre-t commented

2024-03-27 12:42:41 +01:00

Author

Maybe there is some logic behind this, but right now it feels really inconvenient. Can I suggest having an option to not split edges as it feels a bit silly right now having this problem every time

Maybe there is some logic behind this, but right now it feels really inconvenient. Can I suggest having an option to not split edges as it feels a bit silly right now having this problem every time

Skjermbilde 2024-03-27 124045.png

61 KiB

Skjermbilde 2024-03-27 124045.png

Iliya Katushenock commented

2024-03-27 12:47:21 +01:00

Member

@Sindre-t #48279 (comment)

@Sindre-t https://projects.blender.org/blender/blender/issues/48279#issuecomment-592614

Sindre-t commented

2024-03-27 13:06:40 +01:00

Author

I am sorry, I was wrong. I see it is like this in Blender 3.6 as well. I guess I just haven't been using displacement enough to notice this, thank you for quick responses

I am sorry, I was wrong. I see it is like this in Blender 3.6 as well. I guess I just haven't been using displacement enough to notice this, thank you for quick responses

Sign in to join this conversation.

No Label

Animation & Rigging

Asset Browser Project Overview

Automated Testing

Blender Asset Bundle

Dependency Graph

Development Management

EEVEE & Viewport

Images & Movies

Motion Tracking

Nodes & Physics

Pipeline, Assets & IO

Platforms, Builds & Tests

Render & Cycles

Render Pipeline

Sculpt, Paint & Texture

Video Sequencer

Virtual Reality

Blender 2.8 Project

Milestone 1: Basic, Local Asset Browser

Good First Issue

Animation & Rigging

Development Management

EEVEE & Viewport

Nodes & Physics

Pipeline, Assets & IO

Platforms, Builds & Tests

Render & Cycles

Sculpt, Paint & Texture

Needs Info from Developers

Needs Information from User

No Milestone

No project

No Assignees

3 Participants

Notifications

Due Date

The due date is invalid or out of range. Please use the format 'yyyy-mm-dd'.

No due date set.

Dependencies

No dependencies set.

Reference: blender/blender#119921

No description provided.