Frame change handler not called for "master" scene #74093

New Issue

Robert Juricek · 2020-02-21T23:41:00+01:00

Robert Juricek commented

2020-02-21 23:41:00 +01:00

System Information
Operating system: all
Graphics card: irrelevant

Blender Version
Broken: 2.80 and newer
Worked: 2.79

Short description of error
frame_change handler is not called for "master" scene, when rendering "slave" scene directly via compositor or VSE

Exact steps for others to reproduce the error

Open File
Execute script in text editor

render animation (Ctrl+F12) and watch output in console

Compositor case (created in 2.79):
#74093.blend

VSE case:
sequence-editor-scenes.blend

**System Information** Operating system: all Graphics card: irrelevant **Blender Version** Broken: 2.80 and newer Worked: 2.79 **Short description of error** frame_change handler is not called for "master" scene, when rendering "slave" scene directly via compositor or VSE **Exact steps for others to reproduce the error** - Open File - Execute script in text editor # render animation (Ctrl+F12) and watch output in console Compositor case (created in 2.79): [#74093.blend](https://archive.blender.org/developer/F8366415/T74093.blend) VSE case: [sequence-editor-scenes.blend](https://archive.blender.org/developer/F8360418/sequence-editor-scenes.blend)

Robert Juricek commented

2020-02-21 23:41:00 +01:00

Added subscriber: @rooobertek

Richard Antalik changed title from ~~Sequence editor: inconsistent app handlers for sequences of type Scene~~ to Frame change handler not called for "master" scene

2020-02-24 14:56:40 +01:00

Richard Antalik commented

2020-02-24 14:57:28 +01:00

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

Brecht Van Lommel commented

2020-05-13 20:54:43 +02:00

Added subscriber: @brecht

Brecht Van Lommel commented

2020-05-13 20:54:43 +02:00

Changed status from 'Confirmed' to: 'Archived'

Brecht Van Lommel closed this issue

2020-05-13 20:54:43 +02:00

Brecht Van Lommel self-assigned this 2020-05-13 20:54:43 +02:00

Brecht Van Lommel commented

2020-05-13 20:54:43 +02:00

This is currently by design. The master scene is not fully evaluated at this frame, none of its objects or collections are affected and so running the frame change handler would not work for most Python scripts.

We may extend or change the API to support this, but for now it's not considered a bug.

This is currently by design. The master scene is not fully evaluated at this frame, none of its objects or collections are affected and so running the frame change handler would not work for most Python scripts. We may extend or change the API to support this, but for now it's not considered a bug.

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Frame change handler not called for "master" scene #74093

render animation (Ctrl+F12) and watch output in console