[Webkit-unassigned] [Bug 223740] Inconsistent WebGL video upload performance
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Sat Oct 23 05:31:35 PDT 2021
https://bugs.webkit.org/show_bug.cgi?id=223740
--- Comment #9 from Dustin Kerstein <dustin.kerstein at gmail.com> ---
FYI this and 231031 may be dupes / related. It might also be worth looking into the Feedback assistant bugs:
FB9688897
FB9666426
FB9554184
See here for another simple replication test case - https://jsfiddle.net/qz9ka6xm (using RGBA textures from a very simple cycling color video).
On stock Safari 15 + latest Beta 15.1 Safari + Safari Technical Preview, when using my 2018 Macbook Pro i9 I am always seeing around 18-20fps in that above test, regardless of enabling GPU Process WebGL and/or WebGL Metal (Chrome and Firefox are >50fps)
However, on a Macbook Air M1, enabling WebGL Metal on Safari 15, seems to fix the issue entirely, with fps >50. When WebGL Metal is disabled (ie. the default setting), I see 4fps...
Has there been any work / investigation into these serious performance regressions? I'm sure this is fairly widespread amongst production websites using WebGL and will only grow as more people upgrade to Safari 15.x
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