RESOLVED FIXED248299
[WinCairo] performance drop for text rendering by Cairo 1.17.6 
https://bugs.webkit.org/show_bug.cgi?id=248299
Summary [WinCairo] performance drop for text rendering by Cairo 1.17.6
Fujii Hironori
Reported 2022-11-23 21:59:29 PST
[WinCairo] MotionMark Design performance drop by Cairo 1.17.6 Tested with: WinCairo WK1 256973@main + WebKitRequirements v2022.10.20 WebKitRequirements v2022.03.05 cairo.dll: 40.71 WebKitRequirements v2022.10.20 cairo.dll: 1.00 Screenshots: https://ibb.co/album/bH7c9t
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Fujii Hironori
Comment 1 2022-11-24 21:26:03 PST
https://github.com/freedesktop/cairo/commit/62681fe0523ae96a29e2ff9c080a4c0f4ad40d4c https://github.com/freedesktop/cairo/commit/82119ec2f38fc92ba711454d87558092f0ef4b32 They are the culprit. Reverting both changes fixes the performance problem.
Fujii Hironori
Comment 2 2022-11-24 23:10:24 PST
Fix scaled_glyph hash lookup on Win64 · freedesktop/cairo@1cc2320 https://github.com/freedesktop/cairo/commit/1cc23206bde186d4aef948bba11e591120c99dcd It was fixed by this.
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