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Inspiring
December 12, 2022
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Quest Pro OpenXR extension: XR_META_local_dimming. Will this ever work over Link/AirLink?

  • December 12, 2022
  • 53 replies
  • 14824 views

Hi, I bought the Quest Pro and love it, and develop for both PC VR and Android.

I would like to know if Local Dimming will ever work on PC through OpenXR via Link or AirLink, or if it will be possible to enable it in the runtime somehow, like Link Sharpening is.

I paid good money for this headset and I expect all its features to work on PC. I'm a pro developer and need PC vs Android builds to have visual quality parity and local dimming missing on PC is a glaring oversight, in my opinion. It's simply unacceptable to spend 2000$ and not be able to use local dimming for PC VR games and apps.

If we can't enable it at a platform level on the headset itself, then if could at least consider a way to add it to Link / AirLink options in a similar way that LinkSharpening was, that would be great. If not, allowing us to enable it through OpenXR as it is on Android, would be fine as well.

If this isn't done by my Amazon return window of Jan 31st, 2023, I will be returning the Quest Pro for a full refund as it's not providing access to all its advertised features. I'm kind of surprised it's even enabled this way at all, even on Android. In my opinion, this belongs in the system settings on the device so you can immediately benefit from it, even in older Quest games (or over Link), that will never get updated to support Pro-specific features. Honestly the entire approach is kind of strange. I get that it adds a bit of processing overhead, but that's why users should be able to disable it in a control panel somewhere. But not being able to use it on PC at all is just wrong, and forcing devs to implement it just to turn on a generic contrast enhancing feature seems like a way to guarantee it will hardly ever get any use, even on standalone apps. I honestly don't get it. Pimax implemented local dimming in their new Crystal headset and it "just works" 24/7, no code required. 

Please consider fixing this or changing the approach, it seems backwards to me. A better place to put it would be next to the place where you select the headset's colour space (rec 709 or rec 2020), in the experimental section.

I just want to be able to use features I paid good money for, local dimming not working unless it's explicitly coded seems like a drastic mistake to me, I don't think any other HMD will do it this way because it makes no sense, honestly.

    Best answer by johnkearney

    Hi all,
    Local dimming for Meta Quest Link has been released as part of our v51 release - which is now on the Public Test Channel. We are not exposing the API as an OpenXR API but instead enabling it for all Meta Quest Link apps.
    John

    53 replies

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    Inspiring
    November 10, 2023

    It's pretty clear the whole "we've got our best men working on it. Who? Our "best men"" means this will never get fixed. I gave up and I suggest other PC VR devs do the same and focus on open source alternatives to AirLink. 

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    Thanks