[Webkit-unassigned] [Bug 218637] New: Textures Fail to Render in WebGL from HLS Stream on iPhone 12 [iOS 14.2]

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=218637

            Bug ID: 218637
           Summary: Textures Fail to Render in WebGL from HLS Stream on
                    iPhone 12 [iOS 14.2]
           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: tony at 8thwall.com
                CC: dino at apple.com

Created attachment 413357

  --> https://bugs.webkit.org/attachment.cgi?id=413357&action=review

Image comparing HLS WebHL playback on iPhone12 vs iPhone11 in iOS 14.2

As a follow-up to https://bugs.webkit.org/show_bug.cgi?id=215908 HLS WebGL playback is still broken on iPhone 12 devices in today's iOS 14.2 release (18B92)

*Examples to Reproduce Issue*

Device: iPhone 12

three.js example: Visit https://8w.8thwall.app/hls-threejs on an iPhone 12 running iOS 14.2 (18B92). The rotating cube has a video texture applied from an HLS stream. The video in the top left corner is using the same HLS stream but rendering on top of the page outside WebGL.

babylon.js example: Visit https://www.babylonjs-playground.com/#9FSDC7#49 on iPhone 12 running iOS 14.2. The plane has a video texture applied from an HLS stream.

Both examples work correctly on:
iPhone 11 (Model MWLC2LL/A) running iOS 14.2 (18B92)
iPhone SE (Model MX9Q2LL/A) running iOS 14.2 (18B92)

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