Bug 254690

Summary:	REGRESSION(262009@main): [ iOS x86_64 ] 2X webgl/conformance/textures/canvas (layout-tests) are flaky timeouts
Product:	WebKit	Reporter:	Robert Jenner <jenner>
Component:	WebGL	Assignee:	Kimmo Kinnunen <kkinnunen>
Status:	NEW ---
Severity:	Normal	CC:	dino, Hironori.Fujii, kbr, kkinnunen, webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified
See Also:	https://bugs.webkit.org/show_bug.cgi?id=253886 https://bugs.webkit.org/show_bug.cgi?id=255281

Description Robert Jenner 2023-03-29 14:30:47 PDT

The following two  webgl/conformance/textures/canvas layout-tests are near constant timeouts on iOS:

webgl/1.0.x/conformance/textures/canvas/tex-2d-rgb-rgb-unsigned_byte.html
webgl/2.0.y/conformance/textures/canvas/tex-2d-rgb-rgb-unsigned_byte.html

HISTORY:
https://results.webkit.org/?suite=layout-tests&suite=layout-tests&test=webgl%2F1.0.x%2Fconformance%2Ftextures%2Fcanvas%2Ftex-2d-rgb-rgb-unsigned_byte.html&test=webgl%2F2.0.y%2Fconformance%2Ftextures%2Fcanvas%2Ftex-2d-rgb-rgb-unsigned_byte.html


These tests are not new tests, but it does appear that they were disabled for a while, and got re-enabled at https://commits.webkit.org/262009@main

Comment 1 Radar WebKit Bug Importer 2023-03-29 16:02:30 PDT

<rdar://problem/107390761>

Comment 2 Robert Jenner 2023-03-29 16:04:54 PDT

It appears this only impacts simulators running on Intel Macs, and it runs/passes just fine on Apple Silicon Macs.

Comment 3 EWS 2023-03-29 16:40:06 PDT

Test gardening commit 262302@main (148c11453551): <https://commits.webkit.org/262302@main>

Reviewed commits have been landed. Closing PR #12145 and removing active labels.

Comment 4 Robert Jenner 2023-03-29 16:48:09 PDT

I can consistently reproduce this on iOS16 simulator ToT on an Intel Mac  running the test as follows: 


run-webkit-tests --iOS-simulator <test_name_goes_here> --debug --force

Comment 5 Fujii Hironori 2023-04-05 14:11:37 PDT

This problem doesn't seem to be iOS specific. Some WebGL tests are flaky these days for some ports.
https://build.webkit.org/results/Apple-Monterey-Release-WK2-Tests/262623@main%20(8509)/results.html

Comment 6 Kimmo Kinnunen 2023-04-11 06:16:49 PDT

(In reply to Fujii Hironori from comment #5)
> This problem doesn't seem to be iOS specific. Some WebGL tests are flaky
> these days for some ports.
> https://build.webkit.org/results/Apple-Monterey-Release-WK2-Tests/
> 262623@main%20(8509)/results.html

For investigation into Apple-Monterey-Release-WK2-Tests failures, I filed bug 255281