Particle emitting object disappears when switching editor types #44169

New Issue

Georg K · 2015-03-29T00:52:17+01:00

Georg K commented

2015-03-29 00:52:17 +01:00

Particle emitting object disappears when switching editor types

System Information
Win 7 x64, Radeon HD7770

Blender Version
Broken: 2.73a, 2.74 RC4
Worked: ?

Short description of error
While rendering, an object with a particle system disappears if you switch an editor to become a 3D viewport (even if it already was a 3D viewport).
Rendering resolution was increased so that the rendering takes longer giving you more time to switch the editor types.

Exact steps for others to reproduce the error
In this file disappearing_emitter_bug.blend do the following:

In the upper editor, notice the visible emitter mesh, now switch the editor type from 3D viewport to something different so there is no editor displaying a 3D view (e.g. press Shift-F3 to switch to the node editor)
Press F12 so rendering starts in the lower image editor
Switch the upper editor back to 3D viewport (Shift-F5) - now the emitter mesh has disappeared and will remain hidden no matter what while rendering
After rendering has finished, it will reappear when you interact with blender like changing a value/switching modes/almost anything
You could also skip step 1) but I think it is more clear this way.

Sorry if this already got reported, but I got this error message when querying for bugs:
Unhandled Exception ("AphrontQueryException")

144: Table './phabricator_search/search_documentfield' is marked as crashed and last (automatic?) repair failed

Particle emitting object disappears when switching editor types **System Information** Win 7 x64, Radeon HD7770 **Blender Version** Broken: 2.73a, 2.74 RC4 Worked: ? **Short description of error** While rendering, an object with a particle system disappears if you switch an editor to become a 3D viewport (even if it already was a 3D viewport). Rendering resolution was increased so that the rendering takes longer giving you more time to switch the editor types. **Exact steps for others to reproduce the error** In this file [disappearing_emitter_bug.blend](https://archive.blender.org/developer/F155958/disappearing_emitter_bug.blend) do the following: 1) In the upper editor, notice the visible emitter mesh, now switch the editor type from 3D viewport to something different so there is no editor displaying a 3D view (e.g. press Shift-F3 to switch to the node editor) 2) Press F12 so rendering starts in the lower image editor 3) Switch the upper editor back to 3D viewport (Shift-F5) - now the emitter mesh has disappeared and will remain hidden no matter what while rendering 4) After rendering has finished, it will reappear when you interact with blender like changing a value/switching modes/almost anything You could also skip step 1) but I think it is more clear this way. ``` ``` Sorry if this already got reported, but I got this error message when querying for bugs: Unhandled Exception ("AphrontQueryException") - 144: Table './phabricator_search/search_documentfield' is marked as crashed and last (automatic?) repair failed

Georg K commented

2015-03-29 00:52:17 +01:00

Changed status to: 'Open'

Georg K commented

2015-03-29 00:52:17 +01:00

Added subscriber: @georgK

Bastien Montagne commented

2015-03-30 11:17:10 +02:00

Added subscribers: @Sergey, @mont29

Bastien Montagne commented

2015-03-30 11:17:10 +02:00

Can confirm that, yes - together with other things, like if you stay in 3DView, start render, and try to switch e.g. to FCurve view, it remains in 3DView…

Sergey, think that kind of things is not really considered a bug, iirc using Blender UI during render is not recommended anyway (we even have an option to lock it completely)?

Can confirm that, yes - together with other things, like if you stay in 3DView, start render, and try to switch e.g. to FCurve view, it remains in 3DView… Sergey, think that kind of things is not really considered a bug, iirc using Blender UI during render is not recommended anyway (we even have an option to lock it completely)?

Sergey Sharybin commented

2015-05-25 21:34:30 +02:00

Changed status from 'Open' to: 'Archived'

Sergey Sharybin closed this issue

2015-05-25 21:34:30 +02:00

Sergey Sharybin self-assigned this 2015-05-25 21:34:30 +02:00

Sergey Sharybin commented

2015-05-25 21:34:30 +02:00

Particles/hair duplis and emitters are being hidden from the viewport due to their total thread instability and loads of conflicts with the render thread. There are two things here:

Eventually we'll have copy-on-write approach, which will let us solve huge amount of such kind of conflicts
Having a replacement of current particle/hair code is also in our TODO list

For until any of those project happened in master i would not consider this is a bug. So thanks for the report, but it's just currently the only way to prevent particles from crash during rendering.

Particles/hair duplis and emitters are being hidden from the viewport due to their total thread instability and loads of conflicts with the render thread. There are two things here: - Eventually we'll have copy-on-write approach, which will let us solve huge amount of such kind of conflicts - Having a replacement of current particle/hair code is also in our TODO list For until any of those project happened in master i would not consider this is a bug. So thanks for the report, but it's just currently the only way to prevent particles from crash during rendering.

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Particle emitting object disappears when switching editor types #44169