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Fixed in 2021.2.X

Fixed in 2019.4.X, 2020.3.X, 2021.1.X

Votes

0

Found in

2018.4

2019.4

2019.4.14f1

2020.2

2021.1

2021.2

Issue ID

1296365

Regression

No

ParticleSystem.Prewarm is caused when calling ParticleSystem.Simulate even if "PreWarm" option is disabled on the ParticleSystem

Shuriken

-

How to reproduce:
1. Open the attached project's Scene labeled "SampleScene"
2. Enter the Play Mode
3. Press the "Space" key
4. Open up the Profiler Window (Window->Analysis->Profiler)
5. In the Profiler, search for "ParticleSystem.Prewarm"

Expected result: "ParticleSystem.Prewarm" is not found
Actual result: Simulating Particle System in Late Update causes a prewarm

Reproducible with: 2018.4.31f1, 2019.4.18f1, 2020.2.3f1, 2021.1.0b4, 2021.2.0a3

  1. Response avatar

    Resolution Note (fix version 2021.2):

    Simulate was incorrectly labelled as Prewarm in the profiler. Fixed in Unity 2021.2.0a5 and above

  2. Response avatar

    Resolution Note (fix version 2021.1):

    Fixed in Unity 2021.1.0f1

  3. Response avatar

    Resolution Note (fix version 2020.3):

    Fixed in Unity 2020.3.5f1

  4. Response avatar

    Resolution Note (fix version 2019.4):

    Fixed in Unity 2019.4.26f1

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