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GetPixel-compatible formats for all iOS devices

Discussion in 'iOS and tvOS' started by PanicEnsues, Oct 18, 2020.

  1. PanicEnsues

    PanicEnsues

    Joined:
    Jul 17, 2014
    Posts:
    185
    I use GetPixelBilinear to read from several textures. Works fine on Android & PC with their default formats (RGBA Compressed ETC2 8 bits & RGBA Compressed DXT5, respectively).

    But on iOS, if I use the default format (RGBA Compressed PVRTC 4 bits) it errors with "Unsupported GraphicsFormat(117) for GetPixel operations." I switched to the Compressed ETC2 8 bits format and it worked fine on my handful of test devices, but fails with the same error on a tester's iPad Pro.

    Does anyone know of a compressed format that is GetPixel-compatible on all iOS devices? (I'm sure I could RGBA32, but the memory required would lead me straight down crash alley.)

    Thanks!

    -Scott
     
    PanicEnsues, Oct 18, 2020
    #1

  2. magnusfox

    magnusfox

    Joined:
    Nov 7, 2014
    Posts:
    26
    Hey, did you ever get an answer to this somewhere?
     
    magnusfox, Feb 16, 2021
    #2

  3. PanicEnsues

    PanicEnsues

    Joined:
    Jul 17, 2014
    Posts:
    185
    No, unfortunately. The compromise solution I settled on was to use RGB16 format, which seems to be compatible on every device I've tried so far, but eats up an eye-watering 8MB per 2k x 2k texture. But since I only need to load two of them per level, I think it'll be okay.
     
    PanicEnsues, Feb 16, 2021
    #3
    magnusfox likes this.

  4. Alexey

    Alexey

    Unity Technologies

    Joined:
    May 10, 2010
    Posts:
    1,602
    >>I switched to the Compressed ETC2 8 bits format and it worked fine on my handful of test devices, but fails with the same error on a tester's iPad Pro.

    this should not happen. Can you create small repro project and bug report it?
     
    Alexey, Feb 17, 2021
    #4

  5. AdamBebko

    AdamBebko

    Joined:
    Apr 8, 2016
    Posts:
    161
    same issue here. "unsupported GraphicsFormat(117) for GetPixel operations." in IOS platform in editor. The error message in console has no links nor any useful info for debugging.

    I am also using GetPixelBillinear in the project. not sure if that's where it's coming from

    Also fixed when changing textures to RGBA 32
     
    AdamBebko, Apr 7, 2022
    #5