NEW248460
Canvas2D has up to 10x performance degradation if Canvas HTML Element has outline 
https://bugs.webkit.org/show_bug.cgi?id=248460
Summary Canvas2D has up to 10x performance degradation if Canvas HTML Element has out...
george.pomas
Reported 2022-11-29 00:15:25 PST
Safari 16.1 and Safari 16.4 (Technology Preview) have performance degradation up to 10 times when outline is present on Canvas element. It is most noticeable on M1 machines, but it is also present on Intel machines, but to a much lesser extent.
Attachments
Reproducible example (967 bytes, text/html)
2022-11-29 00:16 PST, george.pomas 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
george.pomas
Comment 1 2022-11-29 00:16:03 PST
Created attachment 463779 [details] Reproducible example
george.pomas
Comment 2 2022-11-29 01:17:34 PST
Just noticed, you probably will need to refresh the page a couple of times for bug to reproduce.
Radar WebKit Bug Importer
Comment 3 2022-12-01 15:58:01 PST
<rdar://problem/102880775>
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