[Webkit-unassigned] [Bug 230617] New: gl.texImage2D upload of getUserMedia streams via <video> element fails on iOS 15.1 beta 1

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=230617

            Bug ID: 230617
           Summary: gl.texImage2D upload of getUserMedia streams via
                    <video> element fails on iOS 15.1 beta 1
           Product: WebKit
           Version: Other
          Hardware: iPhone / iPad
                OS: Other
            Status: NEW
          Severity: Critical
          Priority: P2
         Component: WebGL
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: connell at zappar.com
                CC: dino at apple.com, kbr at google.com, kkinnunen at apple.com

Uploading a camera stream to a WebGL texture using getUserMedia(...), a <video> element, and gl.texImage2D(...) is failing in Safari on the iOS 15.1 beta 1 release.

It works correctly on the release version of iOS 15.0 and earlier.

I've prepared a minimal test case here:
https://clv.zappar.io/3571850569055456732/1.0.0/

The page should show a live camera feed in the canvas after allowing camera permissions. On iOS 15.1 beta 1 no camera feed appears. The source for this test case is entirely within the page itself should you wish to take a look at how it's implemented.

This is a common flow for web-based augmented reality and image processing applications. We have many sites and customers who rely on this behaviour to work correctly, so this is a major regression and concern for us.

The same issue is also reported in the following bug but I've filed this one with a minimal test case and a more specific title in the hopes that it helps surface this significant regression to the right team :-)
https://bugs.webkit.org/show_bug.cgi?id=230589

Let me know if I can help with any questions!

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