Bug 250310

Summary: CSS clip-path should prevent direct image compositing
Product: WebKit Reporter: Ahmad Saleem <ahmad.saleem792>
Component: CSSAssignee: Nobody <webkit-unassigned>
Status: RESOLVED INVALID    
Severity: Normal CC: bfulgham, koivisto, ntim, simon.fraser, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: Safari Technology Preview   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Safari 16.2, Chrome Canary 111 & Firefox Nightly 110 - difference none

Ahmad Saleem
Reported 2023-01-09 03:17:11 PST
Hi Team, While going through Blink's commit, I came cross another failing test case in Safari 16.2 & Safari Technology Preview 160 (while passing in Chrome Canary 111 & Firefox Nightly 110), I tried to look for related bug but couldn't find (it could be silly me here): Test Case - https://jsfiddle.net/sjmanpte/ ^ Hover and it will be different black while in Chrome etc., it would be turning into greyish + light greenish. Blink Commit - https://chromium.googlesource.com/chromium/blink/+/f952e432e1e936b068eed89fbc567ee2a261aa58 WebKit Source - https://searchfox.org/wubkat/source/Source/WebCore/rendering/RenderLayerBacking.cpp#2988 adding "|| renderer().hasClipPath())" into above. Just wanted to raise it so this can be fixed. Thanks!
Attachments
Safari 16.2, Chrome Canary 111 & Firefox Nightly 110 - difference (9.34 MB, video/quicktime)
2023-01-09 15:27 PST, Ahmad Saleem 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Simon Fraser (smfr)
Comment 1 2023-01-09 12:24:36 PST
The testcase renders correctly in WebKit so I'm not sure we need the change.
Ahmad Saleem
Comment 2 2023-01-09 15:27:17 PST
Created attachment 464427 [details] Safari 16.2, Chrome Canary 111 & Firefox Nightly 110 - difference @smfr - I am getting this on my end, you checked with WebKit Trunk build?
Simon Fraser (smfr)
Comment 3 2023-01-09 15:46:48 PST
In a recent WebKit build (and STP 160) I see the same as the CHrome/Firefox behavior; the circle gets more transparent as it zooms up.
Ahmad Saleem
Comment 4 2023-01-09 15:48:20 PST
(In reply to Simon Fraser (smfr) from comment #3) > In a recent WebKit build (and STP 160) I see the same as the CHrome/Firefox > behavior; the circle gets more transparent as it zooms up. For some reason, I have same behavior in STP160 and Safari 16.2 and similar to attached video. Strange! :-(
Ahmad Saleem
Comment 5 2023-01-09 15:50:03 PST
(In reply to Ahmad Saleem from comment #4) > (In reply to Simon Fraser (smfr) from comment #3) > > In a recent WebKit build (and STP 160) I see the same as the CHrome/Firefox > > behavior; the circle gets more transparent as it zooms up. > > For some reason, I have same behavior in STP160 and Safari 16.2 and similar > to attached video. Strange! :-( If I use incognito mode then I get same as Chrome Canary 111 and Firefox Nightly 110 using even Safari 16.2. So it might be cache issue?
Radar WebKit Bug Importer
Comment 6 2023-01-16 03:18:17 PST
<rdar://problem/104294888>
Antti Koivisto
Comment 7 2023-03-10 08:24:21 PST
I can't repro this with WebKit trunk.
Ahmad Saleem
Comment 8 2023-03-10 08:25:57 PST
Let's mark this as "RESOLVED INVALID" since others are not able to reproduce and no need to loss our time here. :-)
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