234006 2021-12-08 07:32:35 -0800 ANGLE Metal stencil, depth, multisample performance regression 2022-03-01 01:42:17 -0800 1 1 1 Unclassified WebKit WebGL Safari 15 iPhone / iPad iOS 15 NEW InRadar P2 Major --- 231180 1 jekfer.bichon webkit-unassigned dino kbr kkinnunen kpiddington sebastien.videcoq webkit-bug-importer oldest_to_newest 1821544 0 446362 jekfer.bichon 2021-12-08 07:32:35 -0800 Created attachment 446362 Sample to reproduce Hello, We have detected a performance regression on Safari 15 when using "antialias: true" option on the WebGLRendering context. The regression was detected on an iPad Gen 8. I have attached a sample to reproduce the issue, on portrait mode. On Safari 14 we were getting an average of 58-59 fps on the sample, meanwhile Safari 15 runs around 36 fps. Disabling the experimental option "WebGL via Metal" on Safari 15 puts the performances back at Safari 14 level. The portrait/landscape mode is not very important to the issue at hand, the quad on the sample was simply positioned in a way to occupy most of the screen on portrait mode. Thank you. 1824351 1 webkit-bug-importer 2021-12-15 08:07:16 -0800 <rdar://problem/86523176> 1824404 2 kkinnunen 2021-12-15 10:00:28 -0800 Thank you for the report. I can reproduce the issue. 1824410 3 kkinnunen 2021-12-15 10:05:40 -0800 Note: The test case is also setting up canvas with four times the screen size with antialias: true, stencil:true, depth:true, so the default framebuffer consumes quite much memory (100+gb) and jetsams on some devices. 1842272 4 sebastien.videcoq 2022-02-16 07:11:19 -0800 Hello, any progress on this ? This is severely impacting performances of our products. 1846953 5 kkinnunen 2022-03-01 01:42:17 -0800 (In reply to Sébastien VIDECOQ from comment #4) > Hello, any progress on this ? This is severely impacting performances of our > products. Thanks for the query. Currently I cannot reproduce this on iPad Pro 2020, iOS 15.4 seed 4. I'll try with other devices later. If you have time, please update to iOS 15.4 seed 4 or later and retry on your end. 446362 2021-12-08 07:32:35 -0800 2021-12-08 07:32:35 -0800 Sample to reproduce iosCanvasAAReg.html text/html 2274 jekfer.bichon PCFET0NUWVBFIGh0bWw+DQo8aHRtbD4NCg0KPGhlYWQ+DQogICAgPG1ldGEgY2hhcnNldD0idXRm LTgiPg0KICAgIDx0aXRsZT5pb3MxNSBncHUgQUEgcmVncmVzc2lvbjwvdGl0bGU+DQogICAgPHNj cmlwdCB0eXBlPSJtb2R1bGUiPg0KICAgICAgICBpbXBvcnQgKiBhcyBUSFJFRSBmcm9tICdodHRw czovL2Nkbi5za3lwYWNrLmRldi90aHJlZSc7DQogICAgICAgIGltcG9ydCBTdGF0cyBmcm9tICdo dHRwczovL2Nkbi5za3lwYWNrLmRldi90aHJlZS9leGFtcGxlcy9qc20vbGlicy9zdGF0cy5tb2R1 bGUnOw0KDQogICAgICAgIC8vIGNyZWF0ZSB0aGUgY2FtZXJhDQogICAgICAgIHZhciBjYW1lcmEg PSBuZXcgVEhSRUUuUGVyc3BlY3RpdmVDYW1lcmEoNDUsIHdpbmRvdy5pbm5lcldpZHRoIC8gd2lu ZG93LmlubmVySGVpZ2h0LCAwLjEsIDEwMDApOw0KICAgICAgICBjYW1lcmEucG9zaXRpb24uc2V0 KDAsIDAsIDIwKTsNCiAgICAgICAgY2FtZXJhLmxvb2tBdChuZXcgVEhSRUUuVmVjdG9yMygwLCA1 LCAtMikpOw0KDQogICAgICAgIHZhciByZW5kZXJlciA9IG5ldyBUSFJFRS5XZWJHTFJlbmRlcmVy KHsNCiAgICAgICAgICAgIGFudGlhbGlhczogdHJ1ZSwNCiAgICAgICAgICAgIGFscGhhOiB0cnVl LA0KICAgICAgICAgICAgcHJlbXVsdGlwbGllZEFscGhhOiBmYWxzZSwNCiAgICAgICAgfSk7DQog ICAgICAgIHZhciBjb250ZXh0ID0gcmVuZGVyZXIuZ2V0Q29udGV4dCgpOw0KICAgICAgICB2YXIg cmF0aW8gPSA0Ow0KICAgICAgICByZW5kZXJlci5zZXRQaXhlbFJhdGlvKHJhdGlvKTsNCg0KICAg ICAgICAvLyBzZXQgc2l6ZQ0KICAgICAgICByZW5kZXJlci5zZXRTaXplKHdpbmRvdy5pbm5lcldp ZHRoLCB3aW5kb3cuaW5uZXJIZWlnaHQpOw0KDQogICAgICAgIC8vIGFkZCBjYW52YXMgdG8gZG9t DQogICAgICAgIGRvY3VtZW50LmJvZHkuYXBwZW5kQ2hpbGQocmVuZGVyZXIuZG9tRWxlbWVudCk7 DQoNCiAgICAgICAgLy8gY3JlYXRlIHRoZSBzY2VuZQ0KICAgICAgICB2YXIgc2NlbmUgPSBuZXcg VEhSRUUuU2NlbmUoKTsNCiAgICAgICAgLy8gY29uZmlnDQogICAgICAgIHZhciB1cmwgPSBuZXcg VVJMKHdpbmRvdy5sb2NhdGlvbik7DQogICAgICAgIHZhciBwYXJhbXMgPSBuZXcgVVJMU2VhcmNo UGFyYW1zKHVybC5zZWFyY2gpOw0KICAgICAgICAvLw0KICAgICAgICBjb25zdCBtYXQgPSBuZXcg VEhSRUUuU2hhZGVyTWF0ZXJpYWwoew0KICAgICAgICAgICAgdmVydGV4U2hhZGVyOiBgDQogICAg ICAgICAgICB2b2lkIG1haW4oKSB7DQogICAgICAgICAgICAgICAgZ2xfUG9zaXRpb24gPSBwcm9q ZWN0aW9uTWF0cml4ICogbW9kZWxWaWV3TWF0cml4ICogdmVjNChwb3NpdGlvbiwgMS4wKTsNCiAg ICAgICAgICAgIH0NCiAgICAgICAgICAgIGAsDQogICAgICAgICAgICBmcmFnbWVudFNoYWRlcjog YA0KICAgICAgICAgICAgDQogICAgICAgICAgICB2b2lkIG1haW4oKSB7DQogICAgICAgICAgICAg ICAgZ2xfRnJhZ0NvbG9yID0gdmVjNCgxLjAsIDAuMCwgMC4wLCAxLjApOw0KICAgICAgICAgICAg fQ0KICAgICAgICAgICAgYCwNCiAgICAgICAgfSk7DQogICAgICAgIC8vIGdlb21ldHJ5DQogICAg ICAgIGNvbnN0IGdlb21ldHJ5ID0gbmV3IFRIUkVFLlBsYW5lR2VvbWV0cnkoMTAsIDEwKTsNCiAg ICAgICAgY29uc3QgcXVhZCA9IG5ldyBUSFJFRS5NZXNoKGdlb21ldHJ5LCBtYXQpOw0KICAgICAg ICBxdWFkLnBvc2l0aW9uLnNldCgwLCAwLCAwKTsNCiAgICAgICAgc2NlbmUuYWRkKHF1YWQpOw0K ICAgICAgICAvLyBzdGF0cw0KICAgICAgICB2YXIgc3RhdHMgPSBuZXcgU3RhdHMoKTsNCiAgICAg ICAgc3RhdHMuc2hvd1BhbmVsKDApOyAvLyAwOiBmcHMsIDE6IG1zLCAyOiBtYiwgMys6IGN1c3Rv bQ0KICAgICAgICBkb2N1bWVudC5ib2R5LmFwcGVuZENoaWxkKHN0YXRzLmRvbSk7DQogICAgICAg IC8vIA0KICAgICAgICBmdW5jdGlvbiBhbmltYXRlKCkgew0KICAgICAgICAgICAgcmVxdWVzdEFu aW1hdGlvbkZyYW1lKGFuaW1hdGUpOw0KICAgICAgICAgICAgcmVuZGVyKCk7DQogICAgICAgIH0N Cg0KICAgICAgICBmdW5jdGlvbiByZW5kZXIoKSB7DQogICAgICAgICAgICBzdGF0cy5iZWdpbigp Ow0KDQogICAgICAgICAgICByZW5kZXJlci5yZW5kZXIoc2NlbmUsIGNhbWVyYSk7DQoNCiAgICAg ICAgICAgIHN0YXRzLmVuZCgpOw0KICAgICAgICB9DQoNCiAgICAgICAgYW5pbWF0ZSgpOw0KDQoN CiAgICA8L3NjcmlwdD4NCjwvaGVhZD4NCg0KPGJvZHk+PC9ib2R5Pg0KDQo8L2h0bWw+