Crash when starting to render (F12) with a 3D viewport in Rendered shading mode #49751

New Issue

Wout · 2016-10-17T09:27:50+02:00

Wout commented

2016-10-17 09:27:50 +02:00

System Information
MacBook 12"
Intel Core M at 1.2GHz
8GB ram
Intel HD Graphics 5300 1536 MB

Blender Version
Broken: 2.78 0b13b7a
(Or any recent version actually)

Short description of error
If one 3D viewport has shading set to Rendered, Blender crashed when starting a render (F12).

crashtest.mov

Exact steps for others to reproduce the error

set the shading of one 3D viewport to Rendered
press F12

crashtest.blend

crashtest.crash.txt

**System Information** MacBook 12" Intel Core M at 1.2GHz 8GB ram Intel HD Graphics 5300 1536 MB **Blender Version** Broken: 2.78 0b13b7a (Or any recent version actually) **Short description of error** If one 3D viewport has shading set to Rendered, Blender crashed when starting a render (F12). [crashtest.mov](https://archive.blender.org/developer/F379745/crashtest.mov) **Exact steps for others to reproduce the error** set the shading of one 3D viewport to Rendered press F12 [crashtest.blend](https://archive.blender.org/developer/F379746/crashtest.blend) [crashtest.crash.txt](https://archive.blender.org/developer/F379747/crashtest.crash.txt)

Wout commented

2016-10-17 09:27:50 +02:00

Changed status to: 'Open'

Wout commented

2016-10-17 09:27:50 +02:00

Added subscriber: @wout

Sergey Sharybin commented

2016-10-17 10:25:57 +02:00

Added subscriber: @Sergey

Sergey Sharybin commented

2016-10-17 10:25:57 +02:00

Changed status from 'Open' to: 'Archived'

Sergey Sharybin closed this issue

2016-10-17 10:25:57 +02:00

Sergey Sharybin self-assigned this 2016-10-17 10:25:57 +02:00

Sergey Sharybin commented

2016-10-17 10:25:57 +02:00

It seems you've got some addon or script enabled which hooks up to scene pre-render event and switches viewports to non-rendered mode. This is a dangerous situation because switching off rendered mode involves OpenGL communication which in such scenario happens form non-main thread (which is really bad idea and causes crashes).

If you use that script to give final render all the compute power you can use workaround of pausing viewport render instead.

So thanks for the report, but it's either a script or non-official addon which does unsupported operation.

It seems you've got some addon or script enabled which hooks up to scene pre-render event and switches viewports to non-rendered mode. This is a dangerous situation because switching off rendered mode involves OpenGL communication which in such scenario happens form non-main thread (which is really bad idea and causes crashes). If you use that script to give final render all the compute power you can use workaround of pausing viewport render instead. So thanks for the report, but it's either a script or non-official addon which does unsupported operation.

Wout commented

2016-10-17 20:59:48 +02:00

Thanks for your swift reply. You're right indeed. Disabling all add-ons fixes the issue. Now it's about finding the bad guy. Would you able to give me any pointers towards the name/functionality of the add-on? Or should I go trial and error?

Sergey Sharybin commented

2016-10-17 21:17:10 +02:00

It's hard to tell from just a backtrace gathered from release build. Just disable addons one by one i guess.

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Crash when starting to render (F12) with a 3D viewport in Rendered shading mode #49751