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Fixed in 2018.3.X

Fixed in 2019.1.X

Votes

224

Found in

2018.3.0b8

2018.3.0b9

2018.3.0b10

2019.1.0a9

Issue ID

1099125

Regression

Yes

[VR] Particle Systems cause "task.rasterData.indexBuffer == NULL" error and lead to graphical glitches

XR SDK

-

Steps to reproduce:
1. Create a new project
2. Enable VR
3. Create a particle system
4. Enter playmode and put it in your HMDs view
5. If error doesn't show, repeat Stop / Play of playmode again. (when doing this i can repro it with the MockHMD)

Result: "task.rasterData.indexBuffer == NULL" error in the console and potential graphical glitches

Reproduced on 2018.3.0b8, 2018.3.0b10, 2019.1.0a9
Not reproduced on 2018.2.16f1, 2018.3.0a1, 2018.3.0b7
Regression introduced in 2018.3.0b8

notes:
- Is known to also cause memory leaks

  1. Resolution Note (fix version 2018.3):

    The fix has now landed in our various release versions. 2019.2.0a4, 2019.1.0b2 (available approx 1st February), 2018.3.5f1 (available approx 6th February). Thank you for your patience.

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Comments (145)

  1. RWeijermars

    Jan 18, 2019 13:44

    Thx for thx for the update Richard. Any news on if a possible solution has been found?

  2. dimitris_baud

    Jan 18, 2019 11:26

    Yes, you are not alone. You can tell by the number of votes.

    My current workflow is:
    - Disable all particle systems and work on the rest of the project fine
    - If I need the particle systems, restart Unity after 2 times I hit Play, when RAM usage is around 30GB (!)

  3. PatrickVRNerds

    Jan 18, 2019 09:09

    Pew.. finally found a thread about this. It's really dramatically - if we start playmode once, everything seems to be fine. If we start playmode a second time our memory usage increases until it's full. We can't do anything right now, computers are crashing when we are closing a build after like 10 minutes runtime. High prio on this please!

  4. FenceGuy

    Jan 17, 2019 22:12

    Still occuring in 2018.3.2f1 unfortunately. Expected as the release notes didn't suggest otherwise though.

  5. eyalfx

    Jan 17, 2019 19:30

    has anyone tested on 2018.3.2 ?
    I'm using 2018.3.1f1 and really hoping for a fix soon.

  6. jonagill_rr

    Jan 17, 2019 18:48

    @ApeSoup: Well, that's disappointing. Thank you for verifying that.

    @RichardKettlewell: Is there an estimate on when this issue might be fixed? I was hopeful we might see it patched in 2018.3.2, and while that build has a lot of good fixes in it, I don't see VR bugs mentioned anywhere.

  7. chatrat12

    Jan 17, 2019 15:07

    One of the reasons I wish unity was open source is because this would be posted as an issueo on GitHub and we all could have helped find a temporary solution while waiting for the official one. Sucks this one does under the radar for 2 months. Glad to hear the fix is under way.:D

  8. bigfoott

    Jan 16, 2019 23:48

    Good to see that this is being investigated.

  9. threeguysgamestudio

    Jan 16, 2019 17:22

    Just wanted to make sure to say that I'm not using VR at all and this happens with many particle effects from the Asset Store.

    Running 2018.3.0f2

  10. SG_roboryantron

    Jan 16, 2019 16:42

    We have an extremely simple repro case for this. VR project with 40 instances of a looping particle system using a billboard renderer. Open profiler and select profile editor.
    Run for 30 seconds and observe that the memory is relatively stable. When stopping play, the editor hangs for a few seconds and then memory usage jumps up by about 10 GB in the profiler and does not go back down.

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