Toggling "Visible in Render" is extremely slow since 2.90 (when texture is used in modifier) #92386

New Issue

Ronan · 2021-10-21T11:38:43+02:00

Ronan commented

2021-10-21 11:38:43 +02:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 1660/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.71

Blender Version
Broken: version: 2.93.5, branch: master, commit date: 2021-10-05 12:04, hash: a791bdabd0
Broken: version: 2.90.0
Worked: 2.83.18.0

Caused by 23919d2275 btw.
So this might be an intended change in the end (with no real way around), will let developers decide here.

Short description of error
Toggling an object's visibility for rendering is very slow (>10s freeze in the attached file, on my system) in 2.93 LTS, but is instant in 2.83 LTS.
Toggling viewport visibility is instant in both versions.

Exact steps for others to reproduce the error
In the attached file, simply toggle any object's render visibility in the outliner. At least on my system, Blender freezes for around 10 seconds each time you do this in this file, and >30 seconds on some of my other files (which I can't share unfortunately).
I realise these are quite hi-poly objects but they have never been a problem in previous Blender versions.
Blender Slow Hide Test - Packed.blend

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: GeForce GTX 1660/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.71 **Blender Version** Broken: version: 2.93.5, branch: master, commit date: 2021-10-05 12:04, hash: `a791bdabd0` Broken: version: 2.90.0 Worked: 2.83.18.0 Caused by 23919d2275 btw. So this might be an intended change in the end (with no real way around), will let developers decide here. **Short description of error** Toggling an object's visibility for rendering is very slow (>10s freeze in the attached file, on my system) in 2.93 LTS, but is instant in 2.83 LTS. Toggling viewport visibility is instant in both versions. **Exact steps for others to reproduce the error** In the attached file, simply toggle any object's render visibility in the outliner. At least on my system, Blender freezes for around 10 seconds each time you do this in this file, and >30 seconds on some of my other files (which I can't share unfortunately). I realise these are quite hi-poly objects but they have never been a problem in previous Blender versions. [Blender Slow Hide Test - Packed.blend](https://archive.blender.org/developer/F11490600/Blender_Slow_Hide_Test_-_Packed.blend)

Ronan commented

2021-10-21 11:38:43 +02:00

Added subscriber: @Don-Macaron

Germano Cavalcante commented

2021-10-25 05:05:17 +02:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2021-10-25 05:05:17 +02:00

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

Germano Cavalcante commented

2021-10-25 05:05:17 +02:00

I cannot reproduce this with either the latest stable or current development versions of Blender.
It's pretty fast here. Almost instantaneous.

Please try the latest daily build: https://builder.blender.org/download/

Go to File → Defaults → Load Factory Settings and then load your file to see if you still can reproduce this issue.

If the problem persists, please give us more clear instructions on how to reproduce it from scratch.

I cannot reproduce this with either the latest stable or current development versions of Blender. It's pretty fast here. Almost instantaneous. Please try the latest daily build: https://builder.blender.org/download/ Go to File → Defaults → Load Factory Settings and then load your file to see if you still can reproduce this issue. If the problem persists, please give us more clear instructions on how to reproduce it from scratch.

Ronan commented

2021-10-25 14:41:40 +02:00

Hi, thanks for investigating.

I've tried the latest 2.93 build, and have tried loading Factory Settings both on that version and on the LTS 2.93 version.
The problem does still persist, and still does not happen in 2.83.
I'm getting a colleague to try the file on his PC and will report back on that.

However, I have noticed that removing the texture in the Displace modifier from all the objects seems to solve the issue (even though the Displace modifier was not enabled in viewport or render.)
I didn't pack all the textures into the previous .blend file I uploaded here, so perhaps the fact that the texture was missing when you tried it might have had an effect?
Here is a version with the textures packed:

Blender Slow Hide Test - Packed.blend

I'm not yet sure how to reproduce the error fully from scratch, all I know is that most of my files exhibit this behaviour.

Hi, thanks for investigating. I've tried the latest 2.93 build, and have tried loading Factory Settings both on that version and on the LTS 2.93 version. The problem does still persist, and still does not happen in 2.83. I'm getting a colleague to try the file on his PC and will report back on that. However, I have noticed that removing the texture in the Displace modifier from all the objects seems to solve the issue (even though the Displace modifier was not enabled in viewport or render.) I didn't pack all the textures into the previous .blend file I uploaded here, so perhaps the fact that the texture was missing when you tried it might have had an effect? Here is a version with the textures packed: [Blender Slow Hide Test - Packed.blend](https://archive.blender.org/developer/F11490600/Blender_Slow_Hide_Test_-_Packed.blend) I'm not yet sure how to reproduce the error fully from scratch, all I know is that most of my files exhibit this behaviour.

Germano Cavalcante commented

2021-10-25 14:53:07 +02:00

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

Germano Cavalcante commented

2021-10-25 14:53:07 +02:00

In #92386#1240795, @Don-Macaron wrote:
(...)
I didn't pack all the textures into the previous .blend file I uploaded here, so perhaps the fact that the texture was missing when you tried it might have had an effect?

It's quite possible.
I'll take a look at the new version soon.

> In #92386#1240795, @Don-Macaron wrote: > (...) > I didn't pack all the textures into the previous .blend file I uploaded here, so perhaps the fact that the texture was missing when you tried it might have had an effect? It's quite possible. I'll take a look at the new version soon.

Germano Cavalcante commented

2021-10-27 20:44:31 +02:00

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

Germano Cavalcante commented

2021-10-27 20:44:31 +02:00

I opened the file in 2.83 and 2.93 but didn't notice any difference in duration when hiding and unhiding the objects.
Perhaps you are experiencing an issue described 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 ">10s freeze" is really not expected.

Can you try the latest daily build (3.0)? https://builder.blender.org/download/

I opened the file in 2.83 and 2.93 but didn't notice any difference in duration when hiding and unhiding the objects. Perhaps you are experiencing an issue described 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 ">10s freeze" is really not expected. Can you try the latest daily build (3.0)? https://builder.blender.org/download/

Ronan commented

2021-10-28 12:54:58 +02:00

Okay, so interesting result: the latest 3.0 build is absolutely fine. Render visibility for all parts can be toggled instantaneously.
The plot thickens...

I've re-tried in the 2.83 & 2.93 latest builds and latest LTS versions (just to double check) and it definitely seems to be an issue with the 2.93 versions specifically.
It seems the wait time can vary a bit (maybe depending on how many other programs I have running?) but it's generally in the range of 5-12 seconds. It's also impossible to click & drag to hide multiple objects at once, so I have to do them one at a time, and wait 5-12 seconds per object I want to hide.

Okay, so interesting result: the latest 3.0 build is absolutely fine. Render visibility for all parts can be toggled instantaneously. The plot thickens... I've re-tried in the 2.83 & 2.93 latest builds and latest LTS versions (just to double check) and it definitely seems to be an issue with the 2.93 versions specifically. It seems the wait time can vary a bit (maybe depending on how many other programs I have running?) but it's generally in the range of 5-12 seconds. It's also impossible to click & drag to hide multiple objects at once, so I have to do them one at a time, and wait 5-12 seconds *per object* I want to hide.

Ronan commented

2021-10-28 14:58:52 +02:00

Also, just to note, my colleague has now tried the file on his PC and has the same result as me - 2.83 works fine but 2.93 freezes

Germano Cavalcante commented

2021-10-28 17:23:27 +02:00

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

Germano Cavalcante commented

2021-10-28 17:23:27 +02:00

I've tested it on 2.93.2, 2.93.5 and 2.93.6, but I still can't replicate the problem.
Tested on Windows and on Mac.

I'll leave the report open in case anyone else can take a look.
But it seems to be a low priority problem, while this is a real issue, it is only happening to a few people so far. And it seems that to troubleshoot it, developers needs to have direct access to hardware.

I've tested it on 2.93.2, 2.93.5 and 2.93.6, but I still can't replicate the problem. Tested on Windows and on Mac. I'll leave the report open in case anyone else can take a look. But it seems to be a low priority problem, while this is a real issue, it is only happening to a few people so far. And it seems that to troubleshoot it, developers needs to have direct access to hardware.

Philipp Oeser commented

2022-02-23 12:43:38 +01:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2022-02-23 12:43:38 +01:00

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

Philipp Oeser commented

2022-02-23 12:43:38 +01:00

I can confirm the slowness of the toggle.

In #92386#1243071, @Don-Macaron wrote:
Okay, so interesting result: the latest 3.0 build is absolutely fine. Render visibility for all parts can be toggled instantaneously.

Cant confirm this, for me 3.0, 3.1 and 3.2 are equally slow, @Don-Macaron: could you recheck?
Will try to see where this changed between 2.83 and onwards

I can confirm the slowness of the toggle. > In #92386#1243071, @Don-Macaron wrote: > Okay, so interesting result: the latest 3.0 build is absolutely fine. Render visibility for all parts can be toggled instantaneously. Cant confirm this, for me 3.0, 3.1 and 3.2 are equally slow, @Don-Macaron: could you recheck? Will try to see where this changed between 2.83 and onwards

Philipp Oeser commented

2022-02-23 13:28:27 +01:00

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

Philipp Oeser commented

2022-02-23 13:28:27 +01:00

Caused by 23919d2275 btw.

So this might be an intended change in the end (with no real way around), will let developers decide here.

Caused by 23919d2275 btw. So this might be an intended change in the end (with no real way around), will let developers decide here.

Philipp Oeser changed title from ~~Toggling "Visible in Render" is extremely slow in latest 2.93 LTS~~ to Toggling "Visible in Render" is extremely slow since 2.90 (when texture is used in modifier)

2022-02-23 13:29:21 +01:00

Philipp Oeser commented

2022-02-23 13:48:30 +01:00

Just noticed we have a report for this already, see #83271 (Displace modifier with Image Texture causes scene slowdown), will merge reports

Philipp Oeser commented

2022-02-23 13:48:43 +01:00

Closed as duplicate of #83271

Philipp Oeser closed this issue

2022-02-23 13:48:43 +01:00

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Toggling "Visible in Render" is extremely slow since 2.90 (when texture is used in modifier) #92386