Driver Doesn't work in Animation Rendering #72765

New Issue

Ding · 2019-12-29T11:28:35+01:00

Ding commented

2019-12-29 11:28:35 +01:00

System Information
Operating system: Win7
Graphics card: GTX970

Blender Version
Broken: Blender280 Blender281

Short description of error

I created a driver to link between y location & scale.(See Attachment)
Scale should be stable in camera view while Suzanne moves along y axis.
Blender editor view is OK,"Render Image"is OK also.
But doesn't work when "Render Animation".

Driver update seems to be skipped while render animation.

Is this a bug?

//------------------------------------
I tried in blender 2.79.The Driver works bug not what I expected.
seems that something wrong with the update execution order.

**System Information** Operating system: Win7 Graphics card: GTX970 **Blender Version** Broken: Blender280 Blender281 **Short description of error** I created a driver to link between y location & scale.(See Attachment) Scale should be stable in camera view while Suzanne moves along y axis. Blender editor view is OK,"Render Image"is OK also. But doesn't work when "Render Animation". Driver update seems to be skipped while render animation. Is this a bug? //------------------------------------ I tried in blender 2.79.The Driver works bug not what I expected. seems that something wrong with the update execution order.

Ding commented

2019-12-29 11:28:35 +01:00

Added subscriber: @RItsuka

Ding commented

2019-12-29 11:31:32 +01:00

Driver_Animation281.blend

[Driver_Animation281.blend](https://archive.blender.org/developer/F8249952/Driver_Animation281.blend)

Paul Szajner commented

2019-12-30 19:54:42 +01:00

Added subscriber: @sozap

Paul Szajner commented

2019-12-30 19:54:42 +01:00

There is a cyclic dependency in your file, it's visible in the viewport because the object jumps from time to time.
So it's already broken in the viewport and it doesn't get better when rendering animation.

You can kind of make this work by setting the driver differently , using the self.location- [x] instead of accessing the object through a variable :
Driver_Animation281B.blend

I don't know if the dependency graph is designed to be able to drive scale according to location of the same object.
It should be possible with bones within the same armature, I don't know if that should work at object level.

There is a cyclic dependency in your file, it's visible in the viewport because the object jumps from time to time. So it's already broken in the viewport and it doesn't get better when rendering animation. You can kind of make this work by setting the driver differently , using the self.location- [x] instead of accessing the object through a variable : [Driver_Animation281B.blend](https://archive.blender.org/developer/F8252227/Driver_Animation281B.blend) I don't know if the dependency graph is designed to be able to drive scale according to location of the same object. It should be possible with bones within the same armature, I don't know if that should work at object level.

Ding commented

2020-01-06 03:57:07 +01:00

Hi Paul.

Got it.

Thank you so much for your support!

Hi Paul. Got it. Thank you so much for your support!

Ding commented

2020-01-06 04:02:11 +01:00

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

Ding closed this issue

2020-01-06 04:02:11 +01:00

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Driver Doesn't work in Animation Rendering #72765