Unity Issue Tracker - Billboard Particle System rolls in the Game View with "Allow Roll" disabled when a Camera is rotating around it

Fixed in 2020.1.X

Fixed in 2018.4.X, 2019.3.X

Votes

56

Found in

2018.3.0b1

2018.3.0b2

2019.1.0a1

2020.1.0a1

Issue ID

1081596

Regression

No

Billboard Particle System rolls in the Game View with "Allow Roll" disabled when a Camera is rotating around it

Visual Effects - Legacy

Sep 16, 2018

Repro steps:
1. Open user attached project
2. Enter Play Mode
3. Observe the Game View

Expected: The Camera rotates around the cloud without it rotating itself
Actual: The cloud rotates from time to time and only in the Game View

Reproducible with: 2018.3.0b2, 2019.1.0a1
Not reproducible with: 2017.4.11f1, 2018.2.9f1

richardkettlewell

Oct 28, 2019

We are investigating ways to address this issue but it is not trivial, so a fix may not come in the short term.

For anyone hitting this issue, we advise reverting to the scripting method mentioned here: https://forums.oculusvr.com/developer/discussion/5998/hmd-roll-and-particles

If using Unity 2019, rewriting it to use the C# Job System with Burst will make it run very efficiently. Details on that API can be found here: https://forum.unity.com/threads/particle-system-c-job-system-support.529284/

Comments (23)

Mandarb

Aug 19, 2020 21:23

I still have this issue in Unity 2020.1. (The particles sometimes roll uncontrollably while I turn the camera, even though "allow roll" is disabled.)
VERYVVVVVV

Aug 18, 2020 06:39

still an issue in 2018.4.25f1
z rotate is fixed but x,y rotate still occurs
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Jul 13, 2020 17:13

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mattxreality

Dec 06, 2019 03:14

I'm experiencing the same issue with particle rotation when tilting the HDM. I've added my vote to this issue. As the rest, I'm absolutely stunned that this hasn't been fixed in a very long time. If there is no fix, Unity should CLEARLY identify and document a work-around. Visual fidelity is key to VR experience development. Especially for those working to ensure content is built with quality visuals. Remove this issue and you will have opened a new set of creative possibilities for the VR developer community.
mkroll

Nov 08, 2019 07:29

2019.3.0b10 :)

And pretty much every version between 2018.4 - 2019.2 i tried.
scotsdez

Sep 28, 2019 11:23

Experiencing this issue with 2019.2.3f1.
ilhomparisi

Sep 27, 2019 17:38

*1 YEAR LATER*