Bug 245813

Summary: [WinCairo] REGRESSION(WebKitRequirements v2022.09.06): image rendering issue
Product: WebKit Reporter: Fujii Hironori <Hironori.Fujii>
Component: Layout and RenderingAssignee: Nobody <webkit-unassigned>
Status: RESOLVED CONFIGURATION CHANGED    
Severity: Normal CC: don.olmstead
Priority: P2    
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
URL: https://ascii.jp/
Attachments:
Description Flags
test case
none
test case 2 none

Description Fujii Hironori 2022-09-28 20:49:11 PDT 
Created attachment 462696 [details]
test case

REGRESSION: wrong negative background-position

254165@main OK
254443@main NG
Comment 1 Fujii Hironori 2022-09-29 12:57:28 PDT 
I tested only with WinCairo MiniBrowser. I can't reproduce this bug with Mac MiniBrowser. Cairo port bug? Preferences?
Comment 2 Fujii Hironori 2022-09-29 13:02:58 PDT 
Not reproducible with GTK MiniBrowser. WinCairo specific bug?
Comment 3 Fujii Hironori 2022-09-29 20:52:32 PDT 
Downgrading cairo 1.17.6 to 1.17.4 fixed the problem. It seems like cairo 1.17.6 regression.
Comment 4 Fujii Hironori 2022-09-30 00:44:10 PDT 
If I build cairo-1.17.6.tar.bz2 with meson, it has no problem.
It seems like a CMake script problem.
https://github.com/WebKitForWindows/WebKitRequirements/blob/main/ports/cairo/patches/0001-Add-CMake-build.patch
Comment 5 Fujii Hironori 2022-10-02 14:05:46 PDT 
Playwright issue: https://github.com/microsoft/playwright/issues/17766
Comment 6 Fujii Hironori 2022-10-02 20:24:07 PDT 
Removing CAIRO_NO_MUTEX=1 fixes the bug.
Comment 7 Fujii Hironori 2022-10-11 18:03:37 PDT 
Created attachment 462928 [details]
test case 2