Line Art errors when rendering small details #95740

New Issue

Nick Alberelli · 2022-02-13T01:36:41+01:00

Nick Alberelli commented

2022-02-13 01:36:41 +01:00

System Information
Operating system: Linux-5.15.5-76051505-generic-x86_64-with-glibc2.31 64 Bits
Graphics card: NVIDIA GeForce RTX 3090/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 470.86

Blender Version
Broken: version: 3.0.1, branch: master, commit date: 2022-01-25 17:19, hash: dc2d180181
Broken: version: 3.1.0 Beta, branch: master, commit date: 2022-02-11 22:52, hash: 27d3140b13
Broken: version: 3.2.0 Alpha, branch: master, commit date: 2022-02-11 22:58, hash: 35c261dfcf

Worked: version: 2.93.8, branch: master, commit date: 2022-02-01 21:14, hash: 09da7f489a

Short description of error
Line art when rendering fine edge mark details now produces errors that were not present in 2.93.

Example of Error
{F12864446}

Expected Results
{F12864444}

EXAMPLE BEND FILE: Line Art Fine Detail Error.zip
Exact steps for others to reproduce the error

Open Example File
Ensure Line Art is enabled
Render Image

**System Information** Operating system: Linux-5.15.5-76051505-generic-x86_64-with-glibc2.31 64 Bits Graphics card: NVIDIA GeForce RTX 3090/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 470.86 **Blender Version** Broken: version: 3.0.1, branch: master, commit date: 2022-01-25 17:19, hash: `dc2d180181` Broken: version: 3.1.0 Beta, branch: master, commit date: 2022-02-11 22:52, hash: `27d3140b13` Broken: version: 3.2.0 Alpha, branch: master, commit date: 2022-02-11 22:58, hash: `35c261dfcf` Worked: version: 2.93.8, branch: master, commit date: 2022-02-01 21:14, hash: `09da7f489a` **Short description of error** Line art when rendering fine edge mark details now produces errors that were not present in 2.93. **Example of Error** {[F12864446](https://archive.blender.org/developer/F12864446/3.0_World_Space.png)}![3.0 Screen Space.png](https://archive.blender.org/developer/F12864447/3.0_Screen_Space.png) **Expected Results** {[F12864444](https://archive.blender.org/developer/F12864444/2.93_Screen_Space.png)}![2.93 World Space.png](https://archive.blender.org/developer/F12864445/2.93_World_Space.png) EXAMPLE BEND FILE: [Line Art Fine Detail Error.zip](https://archive.blender.org/developer/F12864453/Line_Art_Fine_Detail_Error.zip) **Exact steps for others to reproduce the error** 1. Open Example File 2. Ensure Line Art is enabled 3. Render Image

Nick Alberelli commented

2022-02-13 01:36:41 +01:00

Added subscriber: @TinyNick

Pratik Borhade commented

2022-02-14 05:20:19 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Pratik Borhade commented

2022-02-14 05:20:21 +01:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2022-02-14 05:45:41 +01:00

Changed status from 'Confirmed' to: 'Needs Developer To Reproduce'

Pratik Borhade commented

2022-02-14 05:45:41 +01:00

Added subscriber: @ChengduLittleA

Pratik Borhade commented

2022-02-14 05:45:41 +01:00

This can be fixed by reducing smooth tolerance value ({nav Line Art modifier > Chaining > smooth tolerance})
Doesn't look like a bug. @ChengduLittleA can you check?

This can be fixed by reducing smooth tolerance value ({nav Line Art modifier > Chaining > smooth tolerance}) Doesn't look like a bug. @ChengduLittleA can you check?

Nick Alberelli commented

2022-02-14 16:23:29 +01:00

Seems to work fine with these settings. Thank you @PratikPB2123

I have also tested this in the production file where I found the original error and it has fixed the line art in that scene as well thank you.

![image.png](https://archive.blender.org/developer/F12866823/image.png) Seems to work fine with these settings. Thank you @PratikPB2123 I have also tested this in the production file where I found the original error and it has fixed the line art in that scene as well thank you.

YimingWu self-assigned this 2022-02-19 14:49:39 +01:00

YimingWu commented

2022-02-19 14:49:39 +01:00

Changed status from 'Needs Developer To Reproduce' to: 'Confirmed'

YimingWu commented

2022-02-19 14:49:39 +01:00

@TinyNick @PratikPB2123 Yes this is indeed the behaviour of smooth tolerance.

I'm thinking of removing that default value of 0.2 so it's always 0 fresh start, so it won't confuse people. This value is mainly there for smoothing out geometries that has subdiv, it looks much better with this default value.

Any ideas guys?

@TinyNick @PratikPB2123 Yes this is indeed the behaviour of smooth tolerance. I'm thinking of removing that default value of 0.2 so it's always 0 fresh start, so it won't confuse people. This value is mainly there for smoothing out geometries that has subdiv, it looks much better with this default value. Any ideas guys?

Nick Alberelli commented

2022-02-19 15:42:24 +01:00

This comment was removed by @TinyNick

*This comment was removed by @TinyNick*

Nick Alberelli commented

2022-02-19 15:44:04 +01:00

I think it should be left as is, lots of users subdivide meshes, maybe just document the importance of this option if its not already in the manual would be the only course of action i see.

Sergey Sharybin added

and removed

labels 2023-02-13 18:09:56 +01:00

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