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Question Getting camera feed texture

Discussion in 'Unity MARS' started by Katerpilet, Nov 16, 2021.

  1. Katerpilet

    Katerpilet

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    Aug 2, 2015
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    87
    Trying to get camera feed texture using IUsesCameraTexture and this.GetCameraTexture(), but rendering it to screen seems to always show as white. I'm using URP and 2020.3 w/ latest MARS. Is there any other special configuration I need
     
    Katerpilet, Nov 16, 2021
    #1

  2. jmunozar

    jmunozar

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    1,090
    Hey there!

    Interesting; Do you get the same problems if you are not using URP ?
     
    jmunozar, Nov 17, 2021
    #2

  3. CiaranWills

    CiaranWills

    Unity Technologies

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    Which platform is this on?
     
    CiaranWills, Nov 17, 2021
    #3

  4. Katerpilet

    Katerpilet

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    I got the IUsesCameraTexture working on Android (both URP and Standard), but it wasn't working on iOS for me. The ARCameraManager method works in conjunction with MARS on both platforms, so I ended up using that.
     
    Katerpilet, Nov 17, 2021
    #4

  5. CiaranWills

    CiaranWills

    Unity Technologies

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    Ok - interesting to know that it isn't working on iOS, we'll look into that.

    And as you found, MARS can coexist with AR Foundation managers in your project so you can also use those.
     
    CiaranWills, Nov 18, 2021
    #5

  6. CiaranWills

    CiaranWills

    Unity Technologies

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    Confirmed that this is a bug in MARS with AR Foundation 4. A fix is coming, but the workarounds are to either use AR Foundation 3 or to use the ARCameraManager directly.
     
    CiaranWills, Nov 25, 2021
    #6

  7. Realift

    Realift

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    Can you explain how to get the ARCameraManager directly?
     
    Realift, Nov 26, 2021
    #7

  8. CiaranWills

    CiaranWills

    Unity Technologies

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    You can just have one in your scene (and other AR Foundation components) and MARS will use them instead of creating it's own.
     
    CiaranWills, Nov 27, 2021
    #8

  9. azevedco

    azevedco

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    Mar 2, 2014
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    Hi CiaranWills,
    It seems this is still an issue that i'm experiencing with my project for iOS, yet running as intended for Android.
    Unity 2020.3.12
    URP
    MARS 1.3.1

    Is there a status update on this fix?

    I've tried switching out some systems to utilize the AR Foundation components but was given an error from the MARS Session component, should that just be removed?

    Cheers!
     
    azevedco, Jan 17, 2022
    #9

  10. CiaranWills

    CiaranWills

    Unity Technologies

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    What is the error you see?
     
    CiaranWills, Jan 18, 2022
    #10

  11. azevedco

    azevedco

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    Thanks for your response!
    Haven't really looked out for an error, is it something that would be shown in XCode since this only occurs on iOS builds?
     
    azevedco, Jan 18, 2022
    #11

  12. CiaranWills

    CiaranWills

    Unity Technologies

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    Yeah, when you build and run from xcode you should see messages in the xcode console.
     
    CiaranWills, Jan 18, 2022
    #12

  13. azevedco

    azevedco

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    We're currently getting the following error message from xCode:
    Code (CSharp):
    1. NullReferenceException: Object reference not set to an instance of an object.
    2. at Unity.MARS.Providers.IUsesCameraTextureMethods.GetCameraTexture (Unity.MARS.Providers.IUsesCameraTexture obj) [0x00000] in <00000000000000000000000000000000>:0
    3. at Unit9.UserMarsMirror.LateUpdate () [0x00000] in <00000000000000000000000000000000>:0
     
    azevedco, Jan 19, 2022
    #13

  14. CiaranWills

    CiaranWills

    Unity Technologies

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    Interesting - you don't see this error?
    Code (CSharp):
    1. Metal: Error creating pipeline state (Unlit/ARKitBackground): depthAttachmentPixelFormat is not valid and shader writes to depth
     
    CiaranWills, Jan 26, 2022
    #14