Smoke simulation silently fails in Sync to Audio or Frame Dropping playback #98376

New Issue

Toby Yang · 2022-05-25T17:30:04+02:00

Toby Yang commented

2022-05-25 17:30:04 +02:00

Smoke simulation silently fails in Sync to Audio or Frame Dropping playback

Original Report:

System Information
Operating system: Windows-10-10.0.22000-SP0 64 Bits
Graphics card: GeForce GTX 1650/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 462.30

Blender Version
Broken: version: 3.1.2, branch: master, commit date: 2022-03-31 17:40, hash: cc66d1020c
Worked: Never (tried 2.93, 2.83)

Short description of error
The smoke simulation does not simulate beyond the first frame in this particular file. Any smoke simulation added or appended from other files stops working as well.

However, everything works fine in new files on the same system & hardware.

smoke simulation issue.blend.

Exact steps for others to reproduce the error
Open the blend file, move the smoke domain to clear the old cache.
Hit play and the smoke is not moving. Other physics (rigid body, particles) are working fine.

Delete everything, add a cube, add the quick smoke effect, and the same happens.

Smoke simulation silently fails in Sync to Audio or Frame Dropping playback --- **Original Report:** **System Information** Operating system: Windows-10-10.0.22000-SP0 64 Bits Graphics card: GeForce GTX 1650/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 462.30 **Blender Version** Broken: version: 3.1.2, branch: master, commit date: 2022-03-31 17:40, hash: `cc66d1020c` Worked: Never (tried 2.93, 2.83) **Short description of error** The smoke simulation does not simulate beyond the first frame in this particular file. Any smoke simulation added or appended from other files stops working as well. However, everything works fine in new files on the same system & hardware. [smoke simulation issue.blend](https://archive.blender.org/developer/F13104659/smoke_simulation_issue.blend). **Exact steps for others to reproduce the error** Open the blend file, move the smoke domain to clear the old cache. Hit play and the smoke is not moving. Other physics (rigid body, particles) are working fine. Delete everything, add a cube, add the quick smoke effect, and the same happens.

Toby Yang commented

2022-05-25 17:30:04 +02:00

Added subscriber: @tianer2820-2

Omar Emara commented

2022-05-26 10:30:24 +02:00

Added subscriber: @OmarEmaraDev

Omar Emara commented

2022-05-26 10:30:24 +02:00

Seems to be an issue in replay cache, and all caching works, investigating.

Omar Emara commented

2022-05-26 10:59:01 +02:00

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

Omar Emara commented

2022-05-26 10:59:01 +02:00

So apparently replay smoke simulation doesn't work if Sync to Audio or Frame Dropping is in use. I guess you can say that those options don't make sense in simulations, but the confusion that this might cause to the user is no great, so confirming this.

Omar Emara changed title from ~~Smoke simulation does not simulate beyond the first frame in particular file~~ to Smoke simulation silently fails in Sync to Audio or Frame Dropping playback

2022-05-26 11:00:54 +02:00

Toby Yang commented

2022-05-27 02:09:51 +02:00

Thanks for the investigation. This makes sense.

I'm mentioning this in the doc D15038, hopefully this can save some time for other users.

Thanks for the investigation. This makes sense. I'm mentioning this in the doc [D15038](https://archive.blender.org/developer/D15038), hopefully this can save some time for other users.

Philipp Oeser removed the

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Smoke simulation silently fails in Sync to Audio or Frame Dropping playback #98376