Bug 232378

Summary: 3D-objects appear without texture/mesh on iOS 15+
Product: WebKit Reporter: bankey1443
Component: WebGLAssignee: Nobody <webkit-unassigned>
Status: RESOLVED DUPLICATE    
Severity: Minor CC: bfulgham, dino, florent.masson, kbr, kkinnunen, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: Other   
Hardware: iPhone / iPad   
OS: Other   
See Also: https://bugs.webkit.org/show_bug.cgi?id=231471
Bug Depends on: 231471    
Bug Blocks:    
Attachments:
Description Flags
3d-model without color (should be orange) none

Description bankey1443 2021-10-27 07:29:09 PDT 
Created attachment 442588 [details]
3d-model without color (should be orange)

https://github.com/google/model-viewer

When using model-viewer (https://github.com/google/model-viewer) on an iPhone with iOS 15.0+, it seems like the 3d-object sometimes displays without textures. While this seems to only affect a small subset of our 3d-objects, it seems pretty consistent to replicate on my iPhone. On first load it usually displays the 3d-model without any color (see attachment), or partially colored, and if you refresh and try again, the page seems to crash or refresh. AR works as intended.

We have tested this on the following devices:
Android - working
iPhone XR/Safari/iOS 13 - working
iPhone 7/Safari/iOS 15 - not working
iPhone XR/Safari/iOS 15.0.2 - not working

Here is a live demo where, on my iPhone, it either works, displays either black/gray (without textures), refreshes the page, or crashes the page seemingly randomly when I try to test it by refreshing the page constantly: https://crawling-bronzed-dash.glitch.me/
Comment 1 Kimmo Kinnunen 2021-10-27 11:44:55 PDT 
Thanks. Most likely this is the same bug as bug 231471.
The orange texture is 4096x4096, which is common with other reports.
Comment 2 Radar WebKit Bug Importer 2021-11-03 07:30:24 PDT 
<rdar://problem/84973567>
Comment 3 Brent Fulgham 2022-02-12 19:26:28 PST 

*** This bug has been marked as a duplicate of bug 231471 ***