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A tip for you who develop on mobile platforms

Discussion in 'General Discussion' started by pKallv, Mar 24, 2021.

  1. pKallv

    pKallv

    Joined:
    Mar 2, 2014
    Posts:
    1,071
    pKallv, Mar 24, 2021
    #1
    pekdata, AxPetre, BennyTan and 4 others like this.

  2. tree_arb

    tree_arb

    Joined:
    Dec 30, 2019
    Posts:
    300
    Thanks i did not know this at all!

    Excellent info to know when developing for mobile.
     
    tree_arb, Mar 24, 2021
    #2
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  3. Noisecrime

    Noisecrime

    Joined:
    Apr 7, 2010
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    1,779
    It’s a useful feature and there is more discussion of it in the original beta thread.

    It should be noted though that when a frame skips being rendered some callbacks in Unity may or will no longer fire such as WaitForEndOfFrame. I also discovered recently in 2019.4.21f if using the Unity Device Simulator package and a world space canvas that the canvas will only be visible for the rendered frame and disappears for non-rendered frames causes it to flash on and off. This only happened in the Device Simulator view and not the game view and may well be addressed in 2020 where the Simulator is now native to Unity editor.

    Overall point being it’s a great feature but has a couple of gotcha’s to watch out for.
     
    Noisecrime, Mar 25, 2021
    #3
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  4. Havokki

    Havokki

    Joined:
    Jun 28, 2015
    Posts:
    117
    I haven't been able to get this work with UI yet and apparently at least one other person has the same issue:
    https://issuetracker.unity3d.com/is...t-renderframeinterval-value-causes-flickering

    All canvases disappear for one frame whenever the renderFrameInterval is changed, meaning that I can only modify it when there is absolutely no canvases visible (which is never). I don't use the Device Simulator, so that is not the cause.

    EDIT:
    Oh, it works if I change the interval only when willCurrentFrameRender returns true :O
     
    Last edited: Mar 29, 2021
    Havokki, Mar 29, 2021
    #4
    allergicracoon, mklasson, tmonestudio and 1 other person like this.

  5. Noisecrime

    Noisecrime

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    Apr 7, 2010
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    Strange i'd not noticed any problems with other canvases, but that WillCurrentFrameRender tip sounds interesting will definitely explore that a bit more.
     
    Noisecrime, Mar 29, 2021
    #5

  6. mklasson

    mklasson

    Joined:
    Oct 30, 2018
    Posts:
    27
    THANK YOU! I was the one filing that bug report 8 months ago. I'd noticed that the bug happened about 2/3 of the time when going from renderFrameInterval 3 to 1, but didn't make the jump to realising it happened exactly when willCurrentFrameRender is false... Seems like an obvious correlation in retrospect, but that's hindsight for you :)

    Seeing as the flickering made the feature completely unusable for me I just put it aside and hoped they would eventually fix it. I just tried it again now though and your workaround works great.

    Again, thank you so very very much!
     
    mklasson, Apr 26, 2021
    #6
    tmonestudio and Havokki like this.