Bug 132766

Summary: Subpixel (?) errors in high-dpi filters tests
Product: WebKit Reporter: Dean Jackson <dino>
Component: Layout and RenderingAssignee: Simon Fraser (smfr) <simon.fraser>
Status: NEW    
Severity: Normal CC: ap, jonlee, mmaxfield, sabouhallawa, sam, simon.fraser, webkit-bug-importer, zalan
Priority: P2 Keywords: InRadar
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   
See Also: https://bugs.webkit.org/show_bug.cgi?id=232384
Bug Depends on: 93471    
Bug Blocks:    
Attachments:
Description Flags
Patch sam: review+

Dean Jackson
Reported 2014-05-09 19:43:04 PDT
https://bugs.webkit.org/show_bug.cgi?id=93471 is adding some new tests that fail with very small image differences on Mac WK2. It looks like the anti-aliasing is slightly wrong on the edge of the text object. Could this be subpixel?
Attachments
Patch (1.69 KB, patch)
2021-12-21 20:55 PST, Simon Fraser (smfr) 		sam: review+
DetailsFormatted DiffDiff
View All Add attachment proposed patch, testcase, etc.
Radar WebKit Bug Importer
Comment 1 2014-05-09 19:52:39 PDT
<rdar://problem/16875024>
alan
Comment 2 2014-05-09 20:50:16 PDT
(In reply to comment #0) > https://bugs.webkit.org/show_bug.cgi?id=93471 is adding some new tests that fail with very small image differences on Mac WK2. It looks like the anti-aliasing is slightly wrong on the edge of the text object. Could this be subpixel? Yes it could, though if you wanna do hiDPI test, you should prefix it with hidpi- instead (see http://trac.webkit.org/changeset/165470). It automatically turns DumpRenderTree/WebKitTestRunner into hidpi mode and runs the test (not sure what the ensure-hidpi.js does or if it works properly at all)
Dean Jackson
Comment 3 2014-05-10 02:40:41 PDT
Ooh, you told me this already - I forgot, sorry :( I'll fix the test names.
alan
Comment 4 2014-05-10 07:25:35 PDT
(In reply to comment #3) > Ooh, you told me this already - I forgot, sorry :( > > I'll fix the test names. I really need to do this. https://bugs.webkit.org/show_bug.cgi?id=132775
Radar WebKit Bug Importer
Comment 5 2014-07-21 11:01:30 PDT
<rdar://problem/17749324>
Alexey Proskuryakov
Comment 6 2014-07-21 11:01:39 PDT
<rdar://problem/17749328>
Simon Fraser (smfr)
Comment 7 2021-12-21 20:55:30 PST
Created attachment 447778 [details] Patch
Sam Weinig
Comment 8 2021-12-29 08:44:36 PST
(In reply to zalan from comment #4) > (In reply to comment #3) > > Ooh, you told me this already - I forgot, sorry :( > > > > I'll fix the test names. > I really need to do this. https://bugs.webkit.org/show_bug.cgi?id=132775 Where do we stand with this comment?
alan
Comment 9 2021-12-29 08:56:04 PST
(In reply to Sam Weinig from comment #8) > (In reply to zalan from comment #4) > > (In reply to comment #3) > > > Ooh, you told me this already - I forgot, sorry :( > > > > > > I'll fix the test names. > > I really need to do this. https://bugs.webkit.org/show_bug.cgi?id=132775 > > Where do we stand with this comment? I don't think I am going to be working on it anytime soon; not sure about if others have plans.
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