Regression: Mask Modifier Creates "Web" of Phantom Lines #43716

New Issue

Zauber Paracelsus · 2015-02-18T03:37:23+01:00

Zauber Paracelsus commented

2015-02-18 03:37:23 +01:00

System Information
64bit Manjaro Linux, kernel 3.14.39
CPU: AMD Phenom II 970 Deneb quad-core
GPU: nVidia GTX 650 Ti, driver 343.36

Blender Version
Broken: 2.73-dev 0294327
Worked: 2.73 b4d8fb5

Short description of error
When the Mask modifier is used to selectively eliminate the geometry of a mesh, a ton of lines appears in the viewport when the object is selected, but they do not seem to conform to any known geometry, and do not show up in rendering. Mostly they seem to connect gaps between pieces of the mesh, or connect to the scene center.

Minor bug, but annoying.

Exact steps for others to reproduce the error
This .blend file repros the issue when opened: MaskModifierSpazout.blend

**System Information** 64bit Manjaro Linux, kernel 3.14.39 CPU: AMD Phenom II 970 Deneb quad-core GPU: nVidia GTX 650 Ti, driver 343.36 **Blender Version** Broken: 2.73-dev 0294327 Worked: 2.73 b4d8fb5 **Short description of error** When the Mask modifier is used to selectively eliminate the geometry of a mesh, a ton of lines appears in the viewport when the object is selected, but they do not seem to conform to any known geometry, and do not show up in rendering. Mostly they seem to connect gaps between pieces of the mesh, or connect to the scene center. ![MaskModifierSpazout.png](https://archive.blender.org/developer/F144389/MaskModifierSpazout.png) Minor bug, but annoying. **Exact steps for others to reproduce the error** This .blend file repros the issue when opened: [MaskModifierSpazout.blend](https://archive.blender.org/developer/F144391/MaskModifierSpazout.blend)

Zauber Paracelsus commented

2015-02-18 03:37:23 +01:00

Changed status to: 'Open'

Zauber Paracelsus commented

2015-02-18 03:37:23 +01:00

Added subscriber: @ZauberParacelsus

Julian Eisel commented

2015-02-18 15:36:15 +01:00

Added subscriber: @JulianEisel

Julian Eisel commented

2015-02-18 15:36:15 +01:00

Also something I can't reproduce here (OpenSuse 64Bit). Could you test again with the softwaregl? Really looks like a driver issue.

Zauber Paracelsus commented

2015-02-18 15:59:26 +01:00

Still repros with softwaregl. However, when I do a factory reset (by renaming the settings folder), the file actually crashes when opened, both with normal blender and with softwaregl. The crash doesn't occur on my debug build though, which is about a week older than the buildbot build I had used.

I have recompiled the debug build against bf0a001e and ran it. Here is the backtrace: T43716_backtrace.txt

Still repros with softwaregl. However, when I do a factory reset (by renaming the settings folder), the file actually crashes when opened, both with normal blender and with softwaregl. The crash doesn't occur on my debug build though, which is about a week older than the buildbot build I had used. I have recompiled the debug build against bf0a001e and ran it. Here is the backtrace: [T43716_backtrace.txt](https://archive.blender.org/developer/F144474/T43716_backtrace.txt)

Julian Eisel commented

2015-02-18 16:15:50 +01:00

Added subscriber: @Psy-Fi

Julian Eisel commented

2015-02-18 16:15:50 +01:00

Mhh starting an earlyer 2.73 build works fine (as I did in my last test), using master crashes on startup for me too, using master with a debug build shows the issue. Pretty weird but looks like an OGL issue. We need @Psy-Fi!

Antonis Ryakiotakis was assigned by Julian Eisel

2015-02-18 16:16:07 +01:00

Zauber Paracelsus commented

2015-02-18 16:23:53 +01:00

Curiously, something with my blender configuration prevents the crash: it only repros for me with a factory reset, the opposite of what I was seeing in #43714.

In case it is helpful, here is a copy of my blender configuration: 2.73.tar.gz

Curiously, something with my blender configuration prevents the crash: it only repros for me with a factory reset, the opposite of what I was seeing in #43714. In case it is helpful, here is a copy of my blender configuration: [2.73.tar.gz](https://archive.blender.org/developer/F144477/2.73.tar.gz)

blender-admin commented

2015-02-18 17:59:16 +01:00

This issue was referenced by 839a6b22d6

This issue was referenced by 839a6b22d6c3750b0c8a98ccdb50d57e475ec754

Antonis Ryakiotakis commented

2015-02-18 17:59:44 +01:00

Changed status from 'Open' to: 'Resolved'

Antonis Ryakiotakis closed this issue

2015-02-18 17:59:44 +01:00

Antonis Ryakiotakis commented

2015-02-18 17:59:44 +01:00

Closed by commit 839a6b22d6.

Closed by commit 839a6b22d6.

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Regression: Mask Modifier Creates "Web" of Phantom Lines #43716