Keyed particles work on viewport but not in render, also they are not affected by force fields #69238

New Issue

Mahmoud Alnaanah · 2019-08-28T07:25:26+02:00

Mahmoud Alnaanah commented

2019-08-28 07:25:26 +02:00

System Information
Operating system: Linux-4.15.0-20-generic-x86_64-with-debian-buster-sid 64 Bits
Graphics card: Mesa DRI Intel(R) Haswell Desktop Intel Open Source Technology Center 4.5 (Core Profile) Mesa 18.2.8

Blender Version
Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: f6cb5f5449
Worked: (optional)

When making a particle system with keyed physics, it works in viewport but the particles do not show properly in the final render. They reappear from the world center when all the previous particles die. Also the particles of the keyed particle system are not affected by force fields.

See the link for screen recording and the sample file.

The problem shows in blender 2.80 and 2.81 but not in 2.79.

I think this might be a bug in blender 2.8 but I hope you can help me to solve it.

screencast

https://drive.google.com/file/d/1iHwAM4mmqMhqjmfCOXsXbziubV17bbsO/view?usp=sharing

Steps to reproduce:
#69238.blend

Open file
Render animation
Compare output to viewport

**System Information** Operating system: Linux-4.15.0-20-generic-x86_64-with-debian-buster-sid 64 Bits Graphics card: Mesa DRI Intel(R) Haswell Desktop Intel Open Source Technology Center 4.5 (Core Profile) Mesa 18.2.8 **Blender Version** Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: `f6cb5f5449` Worked: (optional) When making a particle system with keyed physics, it works in viewport but the particles do not show properly in the final render. They reappear from the world center when all the previous particles die. Also the particles of the keyed particle system are not affected by force fields. See the link for screen recording and the sample file. The problem shows in blender 2.80 and 2.81 but not in 2.79. I think this might be a bug in blender 2.8 but I hope you can help me to solve it. screencast https://drive.google.com/file/d/1iHwAM4mmqMhqjmfCOXsXbziubV17bbsO/view?usp=sharing **Steps to reproduce:** [#69238.blend](https://archive.blender.org/developer/F8290496/T69238.blend) - Open file - Render animation - Compare output to viewport

Mahmoud Alnaanah commented

2019-08-28 07:25:26 +02:00

Added subscriber: @malnaanah

Richard Antalik commented

2020-01-08 20:27:32 +01:00

Added subscriber: @iss

Richard Antalik commented

2020-01-08 20:27:32 +01:00

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

Richard Antalik commented

2020-01-08 20:27:32 +01:00

@malnaanah Is this still an issue with latest build? https://builder.blender.org/download/

Mahmoud Alnaanah commented

2020-01-09 11:07:24 +01:00

Yes, the problem still exist.

Please run the sample file in the original comment (link below) and render it.

https://drive.google.com/file/d/1oSP_xRjhFfo1ZBMhNjsHvpAj8H05HfQo/view?usp=sharing

Yes, the problem still exist. Please run the sample file in the original comment (link below) and render it. https://drive.google.com/file/d/1oSP_xRjhFfo1ZBMhNjsHvpAj8H05HfQo/view?usp=sharing

Philipp Oeser commented

2020-01-09 11:14:10 +01:00

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

Richard Antalik commented

2020-01-20 21:33:56 +01:00

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

Bastien Montagne commented

2020-01-22 09:44:37 +01:00

Added subscriber: @mont29

Bastien Montagne commented

2020-01-22 09:44:37 +01:00

Switching to known issue, as this seems to be an old one, and this whole particle system thing is pending a complete rework anyway…

Philipp Oeser removed the

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Keyed particles work on viewport but not in render, also they are not affected by force fields #69238