Subdivision modifier artifacts in Blender 2.80 #61145

Open
opened 2019-02-03 01:07:57 +01:00 by Andrew Scott · 13 comments

System Information
Operating system: Windows 10
Graphics card: 1080ti

Blender Version
Broken:
2.80 downloaded on the 3rd of Feb, 2019 as found on the download beta section
Worked: (optional)

Short description of error

Some artifacts around the out circle in the blend file, this is not present in Blender 2.79

Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).

load attached file, doesn't matter if it is Cycles or Blender the artifact is present.

ukelele.blend

**System Information** Operating system: Windows 10 Graphics card: 1080ti **Blender Version** Broken: 2.80 downloaded on the 3rd of Feb, 2019 as found on the download beta section Worked: (optional) **Short description of error** Some artifacts around the out circle in the blend file, this is not present in Blender 2.79 **Exact steps for others to reproduce the error** Based on the default startup or an attached .blend file (as simple as possible). load attached file, doesn't matter if it is Cycles or Blender the artifact is present. [ukelele.blend](https://archive.blender.org/developer/F6489852/ukelele.blend)
Author

Added subscriber: @cyberangel67

Added subscriber: @cyberangel67

Added subscriber: @Manuli

Added subscriber: @Manuli

I Downloaded your file, Next time please use File > Export > Automatically pack files into .blend to export all your textures, HDRI's :)

Textures missing from your files....

I rendered your scene but I got clean Image. I think the problem is from your side...

Click on Image to see @ full resolution

Screenshot (9).png

I Downloaded your file, Next time please use File > Export > Automatically pack files into .blend to export all your textures, HDRI's :) Textures missing from your files.... I rendered your scene but I got clean Image. I think the problem is from your side... Click on Image to see @ full resolution ![Screenshot (9).png](https://archive.blender.org/developer/F6495411/Screenshot__9_.png)

If you are using Windows 10 please check if you have 32-bit capable screen.

8-bit screens can cause banding issue...

Check it Start menu > settings (gear icon) > system > Display > Advance display settings

If your screen settings shows 8-bit as in the following Image then the problem is your screen

Click on the preview to see full Image

Screenshot (10).png

If you are using Windows 10 please check if you have 32-bit capable screen. 8-bit screens can cause banding issue... Check it Start menu > settings (gear icon) > system > Display > Advance display settings If your screen settings shows 8-bit as in the following Image then the problem is your screen Click on the preview to see full Image ![Screenshot (10).png](https://archive.blender.org/developer/F6495460/Screenshot__10_.png)
Author

Sorry I am new to Blender, didn't know about that option. And I don't see the option to automatically pack files.

I just looked at your image and the artifact is there.

If you look near the ring or hole and the outer ring you will see triangles, those triangles don't appear on when in Blender 2.79.

Have attached the rendering from Blender 2.79 and circled the artifacts in your render in the following two images.

Capture.PNG

Capture1.PNG

Sorry I am new to Blender, didn't know about that option. And I don't see the option to automatically pack files. I just looked at your image and the artifact is there. If you look near the ring or hole and the outer ring you will see triangles, those triangles don't appear on when in Blender 2.79. Have attached the rendering from Blender 2.79 and circled the artifacts in your render in the following two images. ![Capture.PNG](https://archive.blender.org/developer/F6500656/Capture.PNG) ![Capture1.PNG](https://archive.blender.org/developer/F6500659/Capture1.PNG)

It's not a bug! you have to use smooth feature. (This is same as we set phong in Cinema 4D)

Here's how you can do this >

Screenshot (13)_LI.jpg
Screenshot (14).png

BTW, Sorry for wrong step for texture export, This is how you can do this >

File > External Data > "Automatically pack files into .blend" (This is when you want to export or share files with others you should tick this.)

Hope this helps.

It's not a bug! you have to use smooth feature. (This is same as we set phong in Cinema 4D) Here's how you can do this > ![Screenshot (13)_LI.jpg](https://archive.blender.org/developer/F6502480/Screenshot__13__LI.jpg) ![Screenshot (14).png](https://archive.blender.org/developer/F6502485/Screenshot__14_.png) BTW, Sorry for wrong step for texture export, This is how you can do this > File > External Data > "Automatically pack files into .blend" (This is when you want to export or share files with others you should tick this.) Hope this helps.
Author

So are you saying that even though I am using Cycles in 2.79 and 2.80, I now have to retouch all my work to work in Blender 2.80?

Seriously!!

So are you saying that even though I am using Cycles in 2.79 and 2.80, I now have to retouch all my work to work in Blender 2.80? Seriously!!
Member

Added subscribers: @Sergey, @lichtwerk

Added subscribers: @Sergey, @lichtwerk
Sergey Sharybin was assigned by Philipp Oeser 2019-02-04 11:18:56 +01:00
Member

To me it looks like the subdivision modifier still has problems with ngons.
(unsure why we would have to enable autosmooth...)

Simpler file here:
#61145.blend

@Sergey: is this a know thing?

To me it looks like the subdivision modifier still has problems with ngons. (unsure why we would **have** to enable autosmooth...) Simpler file here: [#61145.blend](https://archive.blender.org/developer/F6504727/T61145.blend) @Sergey: is this a know thing?
Philipp Oeser changed title from Strange artifacts in Blender 2.80 to Subdivision modifier artifacts in Blender 2.80 2019-02-04 11:19:18 +01:00

Yes, Blender 2.8 is still not a stable version. So please better you use it for testing purpose only. I told him a temporary way "Auto Smooth". but Developer will solve the problem if they find anything... Thank You.

Yes, Blender 2.8 is still not a stable version. So please better you use it for testing purpose only. I told him a temporary way "Auto Smooth". but Developer will solve the problem if they find anything... Thank You.
Author

What ever happened to this bug, as Blender is now released the artifact still exists in Blender 2.80, where as it doesn't in Blender 2.79

What ever happened to this bug, as Blender is now released the artifact still exists in Blender 2.80, where as it doesn't in Blender 2.79
Sergey Sharybin was unassigned by Dalai Felinto 2019-12-23 16:35:13 +01:00
Member

Added subscriber: @HDMaster84

Added subscriber: @HDMaster84
Member

I just tried this with current master and got the same result, so this is still valid. I also made an even simpler file with just 4 vertices and using Simple Subdivision.
#61145.blend
Since there are various very simple workarounds like flat shading (e.g. with autosmooth), triangulate modifier, apply modifier and enter editmode, ... I would consider this low priority.

I just tried this with current master and got the same result, so this is still valid. I also made an even simpler file with just 4 vertices and using Simple Subdivision. [#61145.blend](https://archive.blender.org/developer/F8905775/T61145.blend) Since there are various very simple workarounds like flat shading (e.g. with autosmooth), triangulate modifier, apply modifier and enter editmode, ... I would consider this low priority.
Philipp Oeser removed the
Interest
Modeling
label 2023-02-09 15:29:56 +01:00
Sign in to join this conversation.
No Label
Interest
Alembic
Interest
Animation & Rigging
Interest
Asset Browser
Interest
Asset Browser Project Overview
Interest
Audio
Interest
Automated Testing
Interest
Blender Asset Bundle
Interest
BlendFile
Interest
Collada
Interest
Compatibility
Interest
Compositing
Interest
Core
Interest
Cycles
Interest
Dependency Graph
Interest
Development Management
Interest
EEVEE
Interest
EEVEE & Viewport
Interest
Freestyle
Interest
Geometry Nodes
Interest
Grease Pencil
Interest
ID Management
Interest
Images & Movies
Interest
Import Export
Interest
Line Art
Interest
Masking
Interest
Metal
Interest
Modeling
Interest
Modifiers
Interest
Motion Tracking
Interest
Nodes & Physics
Interest
OpenGL
Interest
Overlay
Interest
Overrides
Interest
Performance
Interest
Physics
Interest
Pipeline, Assets & IO
Interest
Platforms, Builds & Tests
Interest
Python API
Interest
Render & Cycles
Interest
Render Pipeline
Interest
Sculpt, Paint & Texture
Interest
Text Editor
Interest
Translations
Interest
Triaging
Interest
Undo
Interest
USD
Interest
User Interface
Interest
UV Editing
Interest
VFX & Video
Interest
Video Sequencer
Interest
Virtual Reality
Interest
Vulkan
Interest
Wayland
Interest
Workbench
Interest: X11
Legacy
Blender 2.8 Project
Legacy
Milestone 1: Basic, Local Asset Browser
Legacy
OpenGL Error
Meta
Good First Issue
Meta
Papercut
Meta
Retrospective
Meta
Security
Module
Animation & Rigging
Module
Core
Module
Development Management
Module
EEVEE & Viewport
Module
Grease Pencil
Module
Modeling
Module
Nodes & Physics
Module
Pipeline, Assets & IO
Module
Platforms, Builds & Tests
Module
Python API
Module
Render & Cycles
Module
Sculpt, Paint & Texture
Module
Triaging
Module
User Interface
Module
VFX & Video
Platform
FreeBSD
Platform
Linux
Platform
macOS
Platform
Windows
Priority
High
Priority
Low
Priority
Normal
Priority
Unbreak Now!
Status
Archived
Status
Confirmed
Status
Duplicate
Status
Needs Info from Developers
Status
Needs Information from User
Status
Needs Triage
Status
Resolved
Type
Bug
Type
Design
Type
Known Issue
Type
Patch
Type
Report
Type
To Do
No Milestone
No project
No Assignees
4 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#61145
No description provided.