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Fixed in 2022.2.X
Fixed in 2020.3.X, 2021.2.X, 2022.1.X
Votes
21
Found in
2020.3.23f1
2020.3.24f1
2021.2
2022.1
Issue ID
1390346
Regression
Yes
[URP] Particles are flickering when in Play Mode
How to reproduce:
1. Open the attached project "Mesh Particle System bug.zip"
2. Enter Play Mode
3. Turn on VSync
4. Observe the Game View
Expected result: Particles are rendered correctly and are not flickering
Actual result: Particles are flickering
Reproducible with: 2020.3.23f1, 2020.3.25f1, 2021.2.7f1, 2022.1.0b2
Not reproducible with: 2019.4.34f1, 2020.3.22f1
Note: The flickering appears without VSync, but turning it on makes the flickering more noticeable
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freezman13
Jul 08, 2022 01:23
@SMEAS solution worked for me.
Looking at docs it seems we've used the incorrect particle system to have GPU instancing enabled.
docs.unity3d.com/Manual/PartSysInstancing.html
"The particle shader that supports GPU instancing is called Particles/Standard Surface."Unfortunately I don't have the skills to make a shader of this type to verify if it works properly. If our art team gets to implementing this I'll edit.
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freezman13
Jul 08, 2022 01:20
@SMEAS solution also worked for me.
looking at docs https://docs.unity3d.com/Manual/PartSysInstancing.html it seems we were using the wrong particle system to have GPU instancing enabled:
"The particle shader that supports GPU instancing is called Particles/Standard Surface."Unfortunately I don't have the skills to create one to see if it actually works with GPU instancing enabled and doesn't flicker. Will edit if our art team implements this and it works.
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henningsteinbock
May 30, 2022 12:11
Still happening in 2022.1.17f1 on Android in VR and URP
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Racines
Mar 30, 2022 08:00
2022.2.17f1!
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Racines
Mar 30, 2022 07:57
not fixed on Android builds with 2022.1.17f1
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DragonCoder
Mar 24, 2022 02:09
Can confirm, 2022.1.0b13 has fixed for built-in too :)
Thank you! -
Vincent13122
Mar 15, 2022 14:44
I am hoping too that this is fixed for built in as well, this is not just specific to urp
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DragonCoder
Mar 12, 2022 04:20
Just to make sure, the fixes will cover the built-in pipeline as well?
Tickets that have been marked as "duplicate" of this one, are referring to the built-in pipeline too.Also indeed the issue is related to GPU instancing somehow as I can confirm what SMEAS said.
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smeas
Jan 15, 2022 14:36
In my case I was able to get rid of the flickering by disabling GPU Instacing on the particle system.
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Resolution Note (fix version 2022.2):
Fixed in: 2022.2.0a9
Resolution Note (fix version 2022.1):
Fixed in: 2022.1.0b13
Resolution Note (fix version 2021.2):
Fixed in: 2021.2.17f1
Resolution Note (fix version 2020.3):
Fixed in: 2020.3.32f1