[Webkit-unassigned] [Bug 248865] New: WebGL via Metal fails on MacBook Air running macOS 13

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=248865

            Bug ID: 248865
           Summary: WebGL via Metal fails on MacBook Air running macOS 13
           Product: WebKit
           Version: Safari 16
          Hardware: Mac (Intel)
                OS: macOS 13
            Status: NEW
          Severity: Critical
          Priority: P2
         Component: WebGL
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: daniel.gjorwell at thunderkick.com
                CC: dino at apple.com, kbr at google.com, kkinnunen at apple.com

WebGL via Metal fails to load and render multiple WebGL 1 based web pages.
The page either doesn't load or takes a long time to load. If it loads, eventually only some graphics will render but most common, the page is rendered black.
Turning off WebGL via Metal restores previous experience (macOS 12.6 or earlier).

Issue found on a MacBook Air (Intel i7) from 2020 running macOS 13.0.1 (Ventura) and Safari 16.1.

The issue is similar but not exactly same as to that of described here which was resolved for Monteray.
https://support.google.com/maps/thread/182536169

-------------------------------------------------------------------------------------
Steps to reproduce issue:

1. Go to www.thunderkick.com and click on the first "Play Game" button shown.
2. The game pops up as a modal and starts to load.
3. The load never finishes or it results in a (commonly) black screen.

Steps to work-around the issue:
1. Go into Developer and Experimental Features and turn off WebGL via Metal.
2. Go to www.thunderkick.com and click on the first "Play Game" button shown.
2. The game pops up as a modal and starts to load.
4. The load never completes reasonably fast and the game is displayed properly.

-------------------------------------------------------------------------------------

-- 
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/20221207/3f6c7edf/attachment-0001.htm>