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Bug MacOs Ventura flickering black on Game View when enable Vsync

Discussion in 'macOS' started by thanghp456, Dec 16, 2022.

  1. thanghp456

    thanghp456

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    Hi everyone, I used 2021.3.1 and 2021.3.16 it happen this.
     
  2. toddmakesgames

    toddmakesgames

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    This vsync issue seems to only happen when I have ProMotion turned on, when I set the refresh rate down to 60hz or connect to an external display, I don't have the tearing/flickering issue.

    macOS Ventura 13.1, Unity 2021.3.16f1
    Macbook Pro 16", M1 Max
     
  3. Gillissie

    Gillissie

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    Did you report this as a bug?
     
  4. BACALL

    BACALL

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    Last edited: Mar 7, 2023
  5. CaptainPMM

    CaptainPMM

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    If you dont want to change your display settings...
    I hereby present to you a kinda random fix I came up with while fiddling around with this issue:

    Code (CSharp):
    1.  
    2. #if UNITY_EDITOR_OSX
    3.  
    4. using UnityEngine;
    5.  
    6. namespace Utils {
    7.     public static class MacVSyncFix {
    8.         [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSplashScreen)]
    9.         public static void Fix() {
    10.             QualitySettings.vSyncCount = 2; // Change from default 1 to 2 did the trick
    11.         }
    12.     }
    13. }
    14.  
    15. #endif
    16.  
    Just create a file somewhere in the Assets folder and you can now use the Game View's VSync again.
    In the builds I did not have any problems.
     
  6. Unifikation

    Unifikation

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    This is locking the frame rate to half the screen's refresh rate. Not really a fix, more like a crippling to get back to 60Hz when running in ProMotion's 120Hz.
     
  7. adslitw

    adslitw

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    Any updates on the internal status of this one @Tautvydas-Zilys?

    edit: just wanted to add that whilst I do feel like the Mac version of Unity is really struggling along as of late, I do *really* appreciate the hard work you're putting in keeping us all in the loop. So thanks for that @Tautvydas-Zilys!
     
    Last edited: Apr 28, 2023
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  8. Tautvydas-Zilys

    Tautvydas-Zilys

    Unity Technologies

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    I'll ask the team responsible for that area.
     
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  9. adslitw

    adslitw

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    Hey @Tautvydas-Zilys, any updates from the team? Or is there someone active on the forum I can ask? Thanks!
     
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  10. Tautvydas-Zilys

    Tautvydas-Zilys

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    Sorry, this fell of my radar a bit. As far as I can tell it's assigned to the appropriate engineering team and it's in their backlog. Unfortunately they couldn't give me any particular timelines.
     
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  11. cystedtwister

    cystedtwister

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    This is bad. Bad.
     
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  12. adslitw

    adslitw

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  13. BACALL

    BACALL

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    @Tautvydas-Zilys I understand that you guys have a lot of work to do, but could you please explain why it’s taking so long to fix the flickering bug? The flickering is not only annoying, but it also makes ProMotion unusable on MacBooks. It’s been like this for over six months now :/ I either have to plug the laptop into an external monitor or configure the Display settings every time I work in Unity. I’m confused why this isn’t a priority for you. I don’t mean to sound rude, and I apologize if I do...
     
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  14. Unifikation

    Unifikation

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    And if you're using a black background, it's also hard to see why your game keeps jarring itself all over the place. Thanks to this thread, I found an indication of the symptom, even if we don't yet know the cause.

    There's something wrong with the depth buffer, would be my guess, on Unity for Macs with Apple Silicon.

    @Tautvydas-Zilys can we at least get some indication that your teams have figured out why and what, and how you'll fix... and when?
     
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  15. adslitw

    adslitw

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  16. AcidArrow

    AcidArrow

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    If there is a workaround, and it seems there is, use the workaround and move on, don't expect timely bug fixes from Unity, their turnaround times are 6+ months on average, and a mac only non computer exploding issue is of below average priority.
     
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  17. adslitw

    adslitw

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    Eh, I disagree. The workaround is either to halve the framerate of my screen which doesn't help when I'm making sure things are framerate independent, or disable vsync (which is what I do) but it eats battery. So either way Unity runs like crap on AS Macs. I pay a lot of money to Unity, I think I'm well within my rights to be politely chasing up on a bug that's been annoying me for months.
     
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  18. AcidArrow

    AcidArrow

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    You are totally within your rights, I just think it's wasted effort. You cannot depend on Unity delivering fixes in a timely manner so don't depend on that. Unity has always (at least the last 5-6 years) had a ton of issues on Macs and with Silicon the issues have exploded.

    For example, here is a video of me having tons of fun making Unity freeze when trying to maximize / minimize the game view by double clicking the top bar:


    I battled with QA for a bit, but then I somehow found out that adding command line arguments to disable editor multithreading stops the freezing, so I just did that and moved on. After also having to disable multithreaded rendering on my builds on all platforms to stop our games from crashing, I think it's more productive for me to consider Unity a single threaded editor and renderer and act accordingly than to actually fight with QA.
     
    Last edited: Jun 30, 2023
  19. Unifikation

    Unifikation

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    These problems are MUCH worse when trying to screen record video of gameplay via Quicktime or similar. Shockingly bad. Something needs to be done about Unity's general disregard for Apple Macs given their new claim to being THE engine for VisionOS.

    No idea who to nudge to make this concern into action at Unity's end. Do knows some folks at Apple that might be pissed to discover this kind of goings on and am sending this thread their way.

    @Unity, please do better for Mac and (therefore) VisionOS, iOS and iPads. This kind of lag on meaningful responses and fixes to significant and fundamental and obvious flaws is deeply troubling for a market that Unity has pretty much to themselves.
     
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  20. Tautvydas-Zilys

    Tautvydas-Zilys

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    I was told they are actively working on fixing this.
     
  21. adslitw

    adslitw

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    Just checked in on this - looks like a fix might finally be landing soon!
     
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  22. Propagant

    Propagant

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    Any updates on this? Even when I set the VSync to every second V Blank the flickering still occurs...
     
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  23. Unifikation

    Unifikation

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    Has it been done yet?
     
  24. Tautvydas-Zilys

    Tautvydas-Zilys

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    Yes, the fix landed to 2021.3.31f1 and 2022.3.10f1 (as per the issue tracker link above). Are you still reproducing it?
     
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  25. Unifikation

    Unifikation

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    It still happens when recording screen video with quicktime and other video capturing software.

    No, you don't need a bug report. You need to try record video at 120fps (Pro Motion) of a game being played.

    And at 60fps, too.
     
  26. Propagant

    Propagant

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    The issue just disappeared once I updated my Macbook Pro M1 to Sonoma OS. Also VSync with locked framerate works well now... I guess things just happen randomly o_O

    Edit: Also I'm using Unity 2022.3.10f1 (Same version before the OS update). So I guess the solution is to keep up to date with the OS on mac!
     
  27. Unifikation

    Unifikation

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    Nonsense.

    It's got nothing to do with the MacOS version.
     
  28. BACALL

    BACALL

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    I don't know if it's only me but I definitely felt issues when I upgraded to macOS Ventura a year ago, that's when all the graphical issues started (V-Sync, Flickering, Lower FPS etc). Sonoma definitely feels better, maybe Apple did something with Metal 3, who knows...
     
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  29. Unifikation

    Unifikation

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    No. You've gotten used to the flickering etc.

    I had someone come over to do some gameplay testing the other day, and he immediately asked "what's with all the flickering..."
     
  30. adslitw

    adslitw

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    The issue 100% started with Ventura - I had no problems one day, updated to Ventura (changing nothing else) and the issue began. So it's not the biggest stretch to believe Sonoma might have changed something back.

    Personally I've had no problems since 2022.3.10f1, but I'm not updating OS version unless I have to, I don't want another year of issues!
     
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  31. Unifikation

    Unifikation

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    This is on Unity, one way or the other. No other apps have these issues. One of the most important jobs of a game engine is to cycle from one frame to the next. Etc.
     
  32. adslitw

    adslitw

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    Well, you're moving the goalposts a bit. However Rider did also have problems, so you're still not quite right. However I do agree that Unity have been incredibly slow to fix the issue.
     
  33. Unifikation

    Unifikation

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    Those were Rider versions running under Rosetta, from my experience. Not the native versions.