REOPENED305560
[GTK][WPE][Coordinated Graphics] rendering glitches for unpainted tiles 
https://bugs.webkit.org/show_bug.cgi?id=305560
Summary [GTK][WPE][Coordinated Graphics] rendering glitches for unpainted tiles
Fujii Hironori
Reported 2026-01-15 05:32:55 PST
[GTK][WPE][Coordinated Graphics] rendering glitches for unpainted tiles 1. Load attachment#477989 [details] 2. Scroll the page by wheel events 3. rendering glitches for unpainted tiles See attachment#477990 [details] video which shows the problem.
Attachments
Add attachment proposed patch, testcase, etc.
Fujii Hironori
Comment 1 2026-01-15 05:37:26 PST
Specifying a semi-transparent color background works around this problem. ./Tools/Scripts/run-minibrowser --gtk --release "https://bugs.webkit.org/attachment.cgi?id=477989" -- --bg-color "#00000050" https://github.com/WebKit/WebKit/blob/430ffe2d947cc6819a5ea30a8aa091f55a46779c/Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/AcceleratedSurface.cpp#L1010-L1013
Fujii Hironori
Comment 2 2026-01-16 03:33:29 PST
Pull request: https://github.com/WebKit/WebKit/pull/56702
Fujii Hironori
Comment 3 2026-01-19 04:16:53 PST
I'm going to fix this bug in bug#305758. *** This bug has been marked as a duplicate of bug 305758 ***
Fujii Hironori
Comment 4 2026-01-19 16:29:42 PST
Reopened. I'm going to solve this problem separately.
Note You need to log in before you can comment on or make changes to this bug.