[Webkit-unassigned] [Bug 226265] Safari iOS ignoring URL fragment parameters when opening USDZ as BLOB in AR QuickLook

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=226265

--- Comment #4 from Chris Dumez <cdumez at apple.com> ---
(In reply to Miles from comment #3)
> Thanks for looking into. 
> 
> In fact, for me, the issue has become worse somewhere along the line. I'm
> not sure which release this degraded between my initial report and now.
> 
> But I'm now testing in iOS 15.4 beta, and when I try to generate a USDZ blob
> and append #allowsContentScaling=0, now AR Quick Look opens the camera view,
> but the model is never rendered, I just keep seeing the initial loading
> spinner which never resolves. 
> 
> When generating a USDZ blob without appending #allowsContentScaling=0, AR
> QuickLook renders the model fine. 
> 
> I'm using the Model-Viewer.dev component to open in AR, which in turn
> leverages three.js to auto generate a USDZ from GLB source. 
> 
> Demo here:
> https://modelviewer-auto-usdz.glitch.me
> 
> When 'Fixed Scale' is not selected (does not append allowsContentScaling
> parameter), USDZ is generated and displays in AR as expected. 
> 
> When 'Fixed Scale' is selected (does append allowsContentScaling=0), USDZ is
> not displayed in Quick Look view. 
> 
> The part in the Model-Viewer code that pertains to this is here:
> 
> https://github.com/google/model-viewer/blob/
> 77c1f8aff8fe9d9004672e5bc81b941ea986aa68/packages/model-viewer/src/features/
> ar.ts#L368
> 
> 
> Do you have a working example that you are able to verify is working?

That part sounds like Bug 236069, which I am fixing.

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