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johnnyprogrammer
Participant
April 15, 2023
Solved

web xr passthrough on quest2 only works at one specific head position

  • April 15, 2023
  • 5 replies
  • 7111 views

Hi, I don't know if anyone has had any similar experiences, but I wanted to just have a little play with superimposing some text over the top of the passthrough mode on the quest 2 using web xr.

I tried to use the examples from here: Mixed Reality Support in Meta Quest Browser | Oculus Developers 

My quest is on version 51 PTC software and I find the passthrough mode and text is only visible if your head is in exactly one position. If you move your head the screen goes completely black. 

My code is: 

 

 

<html>
<head>
  <script src="https://aframe.io/releases/1.3.0/aframe.min.js"></script>
  <script src="https://mixedreality.mozilla.org/webxr-polyfill/build/webxr-polyfill.js"></script>
</head>
<body>
  <a-scene xrweb="arMode: true">
    <a-text value="test" color="black" position="0 1.5 -2" background-color="white"></a-text>
    <a-camera></a-camera>
    <script>
      // Get the XR system
      const xr = navigator.xr;
      // Check if the device supports immersive-ar mode
      xr.isSessionSupported('immersive-ar').then((supported) => {
        if (supported) {
          // Request a session with local-floor and depth-sensing features
          xr.requestSession('immersive-ar', {
            requiredFeatures: ['local-floor', 'depth-sensing']
          }).then((session) => {
            // Start rendering the scene
            const renderer = document.querySelector('a-scene').renderer;
            renderer.xr.setSession(session);
          });
        }
      });
    </script>
  </a-scene>
</body>
</html>

 

 

 

Has anyone seen a similar issue? It just seems like perhaps we could do something cool with web XR and passthrough (If we can get it to work..)

    Best answer by GenericGuy

    Tested the problem on a Quest 2 in my lab (v54), and it did not have the issue. I did a factory reset on my personal headset (hold down volume on when you boot for service menu) and the issue is resolved after a factory reset (v56).

    5 replies

    HiroProtag0nist
    HiroProtag0nist
    Honored Contributor
    May 25, 2023

    Hi johnny_programmer  , not sure if this helps but have you tried the webxr samples - these seem to work for me on the Quest browser.  https://immersive-web.github.io/webxr-samples/

    I'm having an issue trying to get it working over Link - seems that it then doesn't work if you use Link, then go to that site on desktop browsers.

    Big PC, all the headsets, now using Quest 3
    GenericGuy
    New Participant
    August 8, 2023

    Hey there,

    I am experiencing a similar problems that seems to come and go. Passthrough will be working perfectly for days at a time, then all of a sudden the background will be solid unless I look up at the ceiling or cover one of the lower cameras on the headset with my fingers. I've experienced the problem across all levels of lighting (dark, normal, bright). I am using an "immersive-ar" session with no background, renderer alpha = true. 

    Quest 2 - Problem exists on V55 and V56 (only versions I've tested).
    Quest 1 - Works perfectly (V50). 

    It seems to be very random. Passthrough in the main OS always works perfectly. This is just a WebXR issue in the Quest Browser.

      GenericGuyAnswer
      New Participant
      August 8, 2023

      Tested the problem on a Quest 2 in my lab (v54), and it did not have the issue. I did a factory reset on my personal headset (hold down volume on when you boot for service menu) and the issue is resolved after a factory reset (v56).

      johnnyprogrammerAuthor
      Participant
      August 9, 2023

      Thanks for testing that, Its been a while and now we're on v56 PTC. I'll have another go. If it works then the future for the quest 3 is probably looking good as far as XR is concerned.

      kfarr
      Participant
      November 7, 2023

      I also had the same experiences on the quest2 and just upgraded to quest3. At the time I reported to webxr discord #browser channel and said this:

      > On quest2 browser trying to do passthrough webxr. I'm only seeing black background instead of transparent. I have passthrough set on at OS level. Am I doing something wrong? using this demo https://immersive-web.github.io/webxr-samples/immersive-ar-session.html

      > For a very brief moment here and there the black fades out from passthrough when I put my hands or controllers in front of my face, very odd.
      > I tried restarting the headset and same issue. Most of the time it is black but I captured a brief moment when it showed pass through and returned.

      Here is a video of the issue:

      https://youtube.com/shorts/F-PZG33BrQw?feature=share

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