Subdivision modifier with quality 1 crashes blender. #59395

New Issue

Jorge Vásquez Pérez · 2018-12-15T00:21:43+01:00

2018-12-15 00:21:43 +01:00

System Information
Operating system:
Linux 4.19.2-arch1-1-ARCH #1 x86_64 GNU/Linux
Graphics card:
NVIDIA Corporation GP104 [GeForce GTX 1070] (rev a1), drivers for linux ( 410.73-3 )

Blender Version
Broken:
2.80 (sub 37), branch: blender2.8, commit date: 2018-12-14 16:40, hash: ccc09ec124, type: Release
Worked: (optional)
2.80 (sub 31), branch: blender2.8, commit date: 2018-11-16 18:26, hash: 2c347ebbba, type: Release

Short description of error
Subdivision modifier crashes blender in some cases when using the simple algorithm.

Exact steps for others to reproduce the error

open attached file.
Subdivision_Simple_Base.blend
click in the "Simple" button of the Subdivision modifier.
if crash doesn't occur inmediately, repeat #2 as neede.

system-info.txt

**System Information** Operating system: Linux 4.19.2-arch1-1-ARCH #1 x86_64 GNU/Linux Graphics card: NVIDIA Corporation GP104 [GeForce GTX 1070] (rev a1), drivers for linux ( 410.73-3 ) **Blender Version** Broken: 2.80 (sub 37), branch: blender2.8, commit date: 2018-12-14 16:40, hash: ccc09ec1246, type: Release Worked: (optional) 2.80 (sub 31), branch: blender2.8, commit date: 2018-11-16 18:26, hash: 2c347ebbba9, type: Release **Short description of error** Subdivision modifier crashes blender in some cases when using the simple algorithm. **Exact steps for others to reproduce the error** 1. open attached file. [Subdivision_Simple_Base.blend](https://archive.blender.org/developer/F5956146/Subdivision_Simple_Base.blend) 2. click in the "Simple" button of the Subdivision modifier. 3. if crash doesn't occur inmediately, repeat #2 as neede. [system-info.txt](https://archive.blender.org/developer/F5956152/system-info.txt)

Jorge Vásquez Pérez commented

2018-12-15 00:21:43 +01:00

Added subscriber: @yorch

blender-admin commented

2018-12-15 00:21:43 +01:00

studio/blender-studio#60233 was marked as duplicate of this issue

Jacques Lucke commented

2018-12-17 16:55:53 +01:00

Added subscribers: @Sergey, @JacquesLucke

Sergey Sharybin was assigned by Jacques Lucke

2018-12-17 16:55:53 +01:00

Jacques Lucke commented

2018-12-17 16:55:53 +01:00

Sry, something for you again @sergey.

Sergey Sharybin commented

2018-12-18 17:06:52 +01:00

This is actually caused by bug in OpenSubdiv. Good news: it was fixed in upstream revision 0520fc53ffd. Will check with OpenSubdiv team if there is any release planned soon. or whether it's fine to update to a current development branch.

Jorge Vásquez Pérez commented

2018-12-18 19:51:42 +01:00

As always guys, thanks for looking into it.

Sergey Sharybin changed title from ~~Subdivision modifier with simple algorithm crashes blender.~~ to Subdivision modifier with quality 1 crashes blender.

2019-01-07 11:31:10 +01:00

Sergey Sharybin commented

2019-01-07 11:33:27 +01:00

Promoting this report to be an entry point to all related issues.

The root of the problem is following:

Specific non-quad topology.
Infinitely sharp patches which we request from OpenSubdiv.
Creases.
Subdivision Quality 1 (simple subdivision is a creased mesh with quality 1).

Trying to figure out good solution which is possible without waiting for the next release of OpenSubdiv (which is will take some time, and is not very stable/recommended for production yet) .

Promoting this report to be an entry point to all related issues. The root of the problem is following: - Specific non-quad topology. - Infinitely sharp patches which we request from OpenSubdiv. - Creases. - Subdivision Quality 1 (simple subdivision is a creased mesh with quality 1). Trying to figure out good solution which is possible without waiting for the next release of OpenSubdiv (which is will take some time, and is not very stable/recommended for production yet) .

Sergey Sharybin commented

2019-01-07 11:33:43 +01:00

Added subscribers: @MilanJaros, @brecht

blender-admin commented

2019-01-21 16:43:30 +01:00

This issue was referenced by d6d101feca

This issue was referenced by d6d101feca09ae17af00f080a76acbc4d6785c3e

Sergey Sharybin commented

2019-01-22 11:57:58 +01:00

Changed status from 'Open' to: 'Resolved'

Sergey Sharybin closed this issue

2019-01-22 11:57:58 +01:00

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Subdivision modifier with quality 1 crashes blender. #59395