The geometry nodes aren't updating the animation render. Everything else is. #89397

New Issue

Robert Shane · 2021-06-23T22:09:54+02:00

Robert Shane commented

2021-06-23 22:09:54 +02:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 960/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.71

Blender Version
Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-06-22 21:12, hash: dbc054bb88
Broken: version: 2.93.0, branch: master, commit date: 2021-06-02 11:21, hash: 84da05a8b8
Worked: Never

Short description of error
The geometry nodes aren't updating when the animation is rendered. Everything else is though. If I render still images, it works fine. In the attached blend file, I have a Geometry Node setup that animates and a cube that slides across the screen. When I press spacebar to play the animation, the viewport looks fine. The Geometry Node move around like they should. However, when I render the animation, the Geometry Nodes don't update but the cube does. The file was created in 2.93 and imported into 3.0 just to see if it was still broken and it's still broken. I've setup this scene before (turning it into a tutorial) and it worked fine the first time. Recreating the scene step-by-step made it break.

This seems to be related to usage of an object that is hidden in renders.
If this object uses Fcurve animation on its genode modifier properties, animation does not update, if it uses drivers, animation updates

Exact steps for others to reproduce the error
Render animation for these two files:
For upload.blend
For upload tweaked.blend

note: drivers on all geonode modifiers seem to be mandatory to make it work

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: GeForce GTX 960/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.71 **Blender Version** Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-06-22 21:12, hash: `dbc054bb88` Broken: version: 2.93.0, branch: master, commit date: 2021-06-02 11:21, hash: `84da05a8b8` Worked: Never **Short description of error** The geometry nodes aren't updating when the animation is rendered. Everything else is though. If I render still images, it works fine. In the attached blend file, I have a Geometry Node setup that animates and a cube that slides across the screen. When I press spacebar to play the animation, the viewport looks fine. The Geometry Node move around like they should. However, when I render the animation, the Geometry Nodes don't update but the cube does. The file was created in 2.93 and imported into 3.0 just to see if it was still broken and it's still broken. I've setup this scene before (turning it into a tutorial) and it worked fine the first time. Recreating the scene step-by-step made it break. This seems to be related to usage of an object that is hidden in renders. If this object uses Fcurve animation on its genode modifier properties, animation does not update, if it uses drivers, animation updates **Exact steps for others to reproduce the error** Render animation for these two files: [For upload.blend](https://archive.blender.org/developer/F10191486/For_upload.blend) [For upload tweaked.blend](https://archive.blender.org/developer/F10201920/For_upload_tweaked.blend) note: drivers on all geonode modifiers seem to be mandatory to make it work

Robert Shane commented

2021-06-23 22:09:54 +02:00

Added subscriber: @RobertShane

Fen commented

2021-06-23 22:22:01 +02:00

Added subscriber: @chemicalcrux

Fen commented

2021-06-23 22:22:01 +02:00

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

Fen commented

2021-06-23 22:22:01 +02:00

It looks like the file is missing -- can you attach that to the report?

Robert Shane commented

2021-06-23 22:40:27 +02:00

For upload.blend

I didn't realize this 👆 was the upload. I deleted it by mistake

[For upload.blend](https://archive.blender.org/developer/F10191486/For_upload.blend) I didn't realize this 👆 was the upload. I deleted it by mistake

Fen commented

2021-06-23 22:42:53 +02:00

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

Jesse Yurkovich commented

2021-06-24 08:12:03 +02:00

Added subscriber: @deadpin

Jesse Yurkovich commented

2021-06-24 08:12:03 +02:00

Changed status from 'Needs Triage' to: 'Needs Developer To Reproduce'

Jesse Yurkovich commented

2021-06-24 08:12:03 +02:00

The issue is that the 'Delete Grid Geometry' object has its Render visibility turned off. Turning it on will do the right thing; the 'Grid' object properly updates during the animation but the 'Delete Grid Geometry' object will obviously obscure the scene if nothing else is done to make it invisible.

I'm not sure if this is expected or not. Deferring to the developers for a second opinion.

The issue is that the 'Delete Grid Geometry' object has its Render visibility turned off. Turning it on will do the right thing; the 'Grid' object properly updates during the animation but the 'Delete Grid Geometry' object will obviously obscure the scene if nothing else is done to make it invisible. I'm not sure if this is expected or not. Deferring to the developers for a second opinion.

Robert Shane commented

2021-06-24 16:32:49 +02:00

For upload 2.blend
Working0001-0100.mp4

Here's a blend file where it's working with render visibility turned off so that's not the issue. This scene was created from scratch. Maybe you guys can spot the difference better than I can.

[For upload 2.blend](https://archive.blender.org/developer/F10194411/For_upload_2.blend) [Working0001-0100.mp4](https://archive.blender.org/developer/F10194413/Working0001-0100.mp4) Here's a blend file where it's working with render visibility turned off so that's not the issue. This scene was created from scratch. Maybe you guys can spot the difference better than I can.

Philipp Oeser commented

2021-06-25 11:14:40 +02:00

Added subscribers: @JacquesLucke, @dr.sybren, @lichtwerk

Philipp Oeser commented

2021-06-25 11:14:40 +02:00

Hm, there seems to be a difference in regards to animation evaluation on hidden objects with geonodes:

fcurve based animation does not seem to be evaluated [as in For upload.blend]
driver based animation does seem to be evaluated [as in For upload 2.blend]

If I tweak For upload.blend to use drivers instead of fcurves it seems to update properly on renders even if the object is hidden [note we seem to need drivers on both geonode modifiers]:
For upload tweaked.blend

@JacquesLucke , @dr.sybren : this is not expected behavior, is it?
Will confirm for now

Hm, there seems to be a difference in regards to animation evaluation on hidden objects with geonodes: - fcurve based animation does not seem to be evaluated [as in `For upload.blend`] - driver based animation does seem to be evaluated [as in `For upload 2.blend`] If I tweak `For upload.blend` to use drivers instead of fcurves it seems to update properly on renders even if the object is hidden [note we seem to need drivers on **both** geonode modifiers]: [For upload tweaked.blend](https://archive.blender.org/developer/F10201920/For_upload_tweaked.blend) @JacquesLucke , @dr.sybren : this is not expected behavior, is it? Will confirm for now

Philipp Oeser commented

2021-06-25 11:14:53 +02:00

Changed status from 'Needs Developer To Reproduce' to: 'Confirmed'

Sybren A. Stüvel commented

2021-07-06 14:15:31 +02:00

In #89397#1182520, @lichtwerk wrote:

fcurve based animation does not seem to be evaluated [as in For upload.blend]

driver based animation does seem to be evaluated [as in For upload 2.blend]
...
@JacquesLucke , @dr.sybren : this is not expected behavior, is it?

No, that's not expected. Not by me, anyway, but I know very little about the internals of Geometry Nodes.

> In #89397#1182520, @lichtwerk wrote: > - fcurve based animation does not seem to be evaluated [as in `For upload.blend`] > - driver based animation does seem to be evaluated [as in `For upload 2.blend`] > ... > @JacquesLucke , @dr.sybren : this is not expected behavior, is it? No, that's not expected. Not by me, anyway, but I know very little about the internals of Geometry Nodes.

blender-admin commented

2021-07-07 10:56:45 +02:00

This issue was referenced by 77834aff22

This issue was referenced by 77834aff223e49eaa3abed56fb120aeca302a0e0

Jacques Lucke commented

2021-07-07 11:02:42 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Jacques Lucke closed this issue

2021-07-07 11:02:42 +02:00

Jacques Lucke self-assigned this 2021-07-07 11:02:42 +02:00

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The geometry nodes aren't updating the animation render. Everything else is. #89397