Surface Deform modifier always updates when selecting objects #90985

New Issue

Łukasz · 2021-08-27T10:40:59+02:00

Łukasz commented

2021-08-27 10:40:59 +02:00

System Information
Operating system: Windows 10
Graphics card: NVidia GTX1080

Blender Version
2.93.1, 2.93.3

Short description of error
Surface Deform modifier causes click lag even if object or/and the modifier is disabled in viewport. It doesn't affect camera panning or rotation.
While I'm at it, it also seems to keep unnecessary data in saved file. I wanted to provide an example file, but it turned out to be over 1 GB. I don't see why it keeps the deformed mesh in the file rather than recalculating it when we enable it or open the file.
It seemed to me to be the best way of making a chainmail, but I can't work with the lag.

Exact steps for others to reproduce the error

Subdivide the default cube with 7-10 cuts (7 enough for my PC, if in the end it doesn't lag, try more divisions).
Duplicate the cube.
Add subdivision modifier (level=6) to 2nd Cube, then add Surface Deform, set the source to 1st Cube, bind.
Disable both objects in viewport, you can even disable the modifiers.
Add a new Cube to the scene. Try selecting and deselecting in in the viewport. There's a lag. Camera panning and rotation works fine. The only way to fix the lag is to apply or remove the Surface Deform modifier.
Save the file. Our file is just 396 faces with modifiers applied. It's over 1GB in size.

Video: https://youtu.be/hEQnVVvPEGU

or

Open .blend file
Bind mesh to the target
Try to select the Cube.001 in viewport
#90985.blend

**System Information** Operating system: Windows 10 Graphics card: NVidia GTX1080 **Blender Version** 2.93.1, 2.93.3 **Short description of error** Surface Deform modifier causes click lag even if object or/and the modifier is disabled in viewport. It doesn't affect camera panning or rotation. While I'm at it, it also seems to keep unnecessary data in saved file. I wanted to provide an example file, but it turned out to be over 1 GB. I don't see why it keeps the deformed mesh in the file rather than recalculating it when we enable it or open the file. It seemed to me to be the best way of making a chainmail, but I can't work with the lag. **Exact steps for others to reproduce the error** 1. Subdivide the default cube with 7-10 cuts (7 enough for my PC, if in the end it doesn't lag, try more divisions). 2. Duplicate the cube. 3. Add subdivision modifier (level=6) to 2nd Cube, then add Surface Deform, set the source to 1st Cube, bind. 4. Disable both objects in viewport, you can even disable the modifiers. 5. Add a new Cube to the scene. Try selecting and deselecting in in the viewport. There's a lag. Camera panning and rotation works fine. The only way to fix the lag is to apply or remove the Surface Deform modifier. 6. Save the file. Our file is just 396 faces with modifiers applied. It's over 1GB in size. Video: https://youtu.be/hEQnVVvPEGU or - Open .blend file - Bind mesh to the target - Try to select the Cube.001 in viewport [#90985.blend](https://archive.blender.org/developer/F10335566/T90985.blend)

Łukasz commented

2021-08-27 10:40:59 +02:00

Added subscriber: @Shaggy90

Pratik Borhade commented

2021-08-27 12:03:39 +02:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2021-08-27 12:08:13 +02:00

Hi, thanks reporting the issue. I am not able to reproduce from scratch on master: fe7377809596c5a65e185afeefd500f7474c274b & 2.93.4 (63559a779c04

Our file is just 396 faces with modifiers applied. It's over 1GB in size.

Can you please try again with factory settings?: File -> Defaults -> Load Factory Settings

Hi, thanks reporting the issue. I am not able to reproduce from scratch on master: `fe7377809596c5a65e185afeefd500f7474c274b` & 2.93.4 (`63559a779c04` >Our file is just 396 faces with modifiers applied. It's over 1GB in size. Can you please try again with factory settings?: `File -> Defaults -> Load Factory Settings`

Łukasz commented

2021-08-27 12:37:29 +02:00

Maybe I'm not describing the issue clearly enough. Here's a video. https://youtu.be/hEQnVVvPEGU I'm loading factory settings at the beginning. Then I'm adding one more cube just to show how clicking works before and after. The rest is what I described.

Pratik Borhade commented

2021-08-27 12:54:00 +02:00

Can reproduce actually. Steps are not clear in description so I will edit that part :)

Damien Monteillard commented

2021-09-12 06:10:39 +02:00

Added subscriber: @lastrodamo

Damien Monteillard commented

2021-09-12 06:14:12 +02:00

I'm on blender 2.83.8
I have 3 surface deform on a model (212 570 vertices) and my file is really heavy 820Mo.

Yesterday, I play animation and my computer was in memory limit (I have 16Go of memory)

My file has memory leaks !
I suspect surface deform modifier...

Is there a way to have a solution with this huge blend file ?
At this time my better solution was to kick this 3 surface deform modifiers.
I have export my model to obj and import in a new file
And my file take 5.5 Mo not 820 Mo !

Would you the huge blend file ?

I'm on blender 2.83.8 I have 3 surface deform on a model (212 570 vertices) and my file is really heavy 820Mo. Yesterday, I play animation and my computer was in memory limit (I have 16Go of memory) My file has memory leaks ! I suspect surface deform modifier... Is there a way to have a solution with this huge blend file ? At this time my better solution was to kick this 3 surface deform modifiers. I have export my model to obj and import in a new file And my file take 5.5 Mo not 820 Mo ! Would you the huge blend file ?

Germano Cavalcante commented

2022-02-10 17:02:27 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2022-02-10 17:02:27 +01:00

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

Germano Cavalcante commented

2022-02-10 17:02:27 +01:00

The fact that the disabled modifier still affects performance is a known issue and has been reported in #73199 (Editing an object that is referenced in a disabled modifier (of another object) forces the other modifiers on the same stack to update).
But the unnecessary updates do indeed look like a bug.

The fact that the disabled modifier still affects performance is a known issue and has been reported in #73199 (Editing an object that is referenced in a disabled modifier (of another object) forces the other modifiers on the same stack to update). But the unnecessary updates do indeed look like a bug.

Germano Cavalcante changed title from ~~Surface Deform lags even when disabled in viewport~~ to Surface Deform modifier always updates when selecting objects

2022-02-10 17:04:42 +01:00

Łukasz commented

2022-02-10 17:05:00 +01:00

The fact that the disabled modifier still affects performance is a known issue

This is more than forcing other modifiers. It lags even if the whole object is disabled.

> The fact that the disabled modifier still affects performance is a known issue This is more than forcing other modifiers. It lags even if the whole object is disabled.

Philipp Oeser removed the

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Surface Deform modifier always updates when selecting objects #90985