Bug 51839

Summary: [CG] Extend color is wrong for some gradients
Product: WebKit Reporter: Simon Fraser (smfr) <simon.fraser>
Component: CSSAssignee: Simon Fraser (smfr) <simon.fraser>
Status: RESOLVED CONFIGURATION CHANGED    
Severity: Normal CC: ahmad.saleem792, jonlee, krit, kyle.bavender, simon.fraser, webkit-bug-importer, webmaster
Priority: P2 Keywords: InRadar
Version: 528+ (Nightly build)   
Hardware: PC   
OS: OS X 10.5   
Bug Depends on:    
Bug Blocks: 54749    
Attachments:
Description Flags
Testcases
none
WIP patch
none
Safari 18.5, Chrome Canary 138 and Firefox Nightly 140 none

Simon Fraser (smfr)
Reported 2011-01-03 11:40:26 PST
Core Graphics has a bug with the extend color for radial gradients, which we'll need to work around. See attached testcase.
Attachments
Testcases (2.10 KB, text/html)
2011-01-03 11:40 PST, Simon Fraser (smfr) 		no flags
Details
WIP patch (2.69 KB, patch)
2011-01-03 14:07 PST, Simon Fraser (smfr) 		no flags
DetailsFormatted DiffDiff
Safari 18.5, Chrome Canary 138 and Firefox Nightly 140 (2.55 MB, image/png)
2025-05-17 17:54 PDT, Ahmad Saleem 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Simon Fraser (smfr)
Comment 1 2011-01-03 11:40:43 PST
Created attachment 77831 [details] Testcases
Simon Fraser (smfr)
Comment 2 2011-01-03 14:07:09 PST
Created attachment 77845 [details] WIP patch
Simon Fraser (smfr)
Comment 3 2011-01-03 14:08:10 PST
This bug is also apparent in LayoutTests/svg/batik/paints/gradientLimit.svg
Simon Fraser (smfr)
Comment 4 2011-01-03 21:36:35 PST
This patch will require new pixel results for various SVG, CSS and canvas tests. Also, some of the canvas/philip tests break (and some get fixed).
Simon Fraser (smfr)
Comment 5 2011-02-24 21:04:45 PST
<rdar://problem/8814089>
Simon Fraser (smfr)
Comment 6 2019-01-15 13:14:24 PST
rdar://problem/8814089 was fixed in 2011 but we still don't render the test case correctly.
Jon Lee
Comment 7 2019-01-17 17:28:30 PST
Both software and hardware paths fail in the first two (colored) cases.
Radar WebKit Bug Importer
Comment 8 2019-01-17 17:29:28 PST
<rdar://problem/47370816>
Ahmad Saleem
Comment 9 2022-09-30 15:33:22 PDT
Safari 16 and Safari Technology Preview 154 still differ from Chrome Canary 108 and Firefox Nightly 107 for two first row cases in attached test cases. Just wanted to share updated testing results. Thanks!
Ahmad Saleem
Comment 10 2025-05-17 17:54:17 PDT
Created attachment 475288 [details] Safari 18.5, Chrome Canary 138 and Firefox Nightly 140 Attached test cases seems to work fine now in Safari 18.5 for me, is it something we still need to track? @Simon
Simon Fraser (smfr)
Comment 11 2025-05-20 11:36:27 PDT
I worked around this in bug 282584.
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