Render error not shown in VSE #76667

New Issue

Xing Liu · 2020-05-12T06:42:22+02:00

Xing Liu commented

2020-05-12 06:42:22 +02:00

System Information
Operating system: Windows 10

Blender Version
Broken: 2.90 8956e9e5f6
Worked: Unknown

Reproduction

In a scene's Compositing workspace, enable Use Nodes and delete all the nodes.
In another scene's VSE, add the above scene as a strip.
Render

Description

F12 on the outputless scene throws an error.

The VSE shows the checkerboard pattern even if there's another strip (e.g. solid black) below the outputless scene strip and does not throw any error. The outputless scene strip should either not interfere with the layers below it or show an error indicating it doesn't have an output.

**System Information** Operating system: Windows 10 **Blender Version** Broken: 2.90 8956e9e5f6c0 Worked: Unknown **Reproduction** 1. In a scene's Compositing workspace, enable Use Nodes and delete all the nodes. 2. In another scene's VSE, add the above scene as a strip. 3. Render **Description** ![image.png](https://archive.blender.org/developer/F8529606/image.png) F12 on the outputless scene throws an error. ![image.png](https://archive.blender.org/developer/F8529643/image.png) The VSE shows the checkerboard pattern even if there's another strip (e.g. solid black) below the outputless scene strip and does not throw any error. The outputless scene strip should either not interfere with the layers below it or show an error indicating it doesn't have an output.

Xing Liu commented

2020-05-12 06:42:22 +02:00

Added subscriber: @xingyzt

blender-admin commented

2020-05-12 06:42:22 +02:00

#83312 was marked as duplicate of this issue

Richard Antalik commented

2020-05-12 10:50:35 +02:00

Added subscriber: @iss

Richard Antalik commented

2020-05-12 10:50:35 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Richard Antalik commented

2020-05-12 10:50:35 +02:00

@xingyzt

outputless scene throws an error.

What error?

Can you upload sample file? This seems to work correctly when I checked.

@xingyzt >outputless scene throws an error. What error? Can you upload sample file? This seems to work correctly when I checked.

Xing Liu commented

2020-05-12 12:02:59 +02:00

no-vse-render-error.blend
Rendering (F12) in the scene throws an error. Rendering in a separate scene containing the outputless scene as a strip in the VSE doesn't.

[no-vse-render-error.blend](https://archive.blender.org/developer/F8530247/no-vse-render-error.blend) Rendering (F12) in the scene throws an error. Rendering in a separate scene containing the outputless scene as a strip in the VSE doesn't.

Richard Antalik commented

2020-05-12 13:11:05 +02:00

Changed status from 'Needs User Info' to: 'Confirmed'

Richard Antalik commented

2020-05-12 13:11:05 +02:00

I understand now.

As far as sequencer can see everything is OK, and error from target scene doesn't propagate.

Open question is to consider more complicated scenarios like what if there are more scenes and only one of them doesn't produce output, or if this goes through multiple sequencer scenes...

Check is done in RE_is_rendering_allowed and it should be propagated between render jobs somehow.

In any case will consider this more like a TODO or "known issue" as a bug as technically this is working as intended. Implementing this error propagation may be not trivial.

I understand now. As far as sequencer can see everything is OK, and error from target scene doesn't propagate. Open question is to consider more complicated scenarios like what if there are more scenes and only one of them doesn't produce output, or if this goes through multiple sequencer scenes... Check is done in `RE_is_rendering_allowed` and it should be propagated between render jobs somehow. In any case will consider this more like a TODO or "known issue" as a bug as technically this is working as intended. Implementing this error propagation may be not trivial.

Richard Antalik commented

2020-12-08 06:33:32 +01:00

Added subscribers: @tintwotin, @mano-wii

Philipp Oeser removed the

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Render error not shown in VSE #76667