[Webkit-unassigned] [Bug 226975] iPhone 6S - iOS 15.0 - unable to retrieve WebGL2 context

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=226975

--- Comment #2 from Kenneth Russell <kbr at google.com> ---
Kyle mentioned on Slack that ANGLE's Metal backend looks for Apple GPU Family 4 at a minimum, possibly because of features around depth comparison samplers.

The restriction was added in:
https://chromium-review.googlesource.com/c/angle/angle/+/2433332

and is related to:
https://bugs.chromium.org/p/angleproject/issues/detail?id=5107

It's not completely clear to me why GPU Family 4 is needed. It doesn't seem to add features over GPU Family 3 that are required to implement GLES 3.0:
https://developer.apple.com/metal/Metal-Feature-Set-Tables.pdf

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.webkit.org/pipermail/webkit-unassigned/attachments/20210616/3a59d9c6/attachment-0001.htm>