Bug 86158 - Overlay scrollbars without layers never paint in overflow regions in tiled drawing mode
Summary: Overlay scrollbars without layers never paint in overflow regions in tiled dr...
Status: RESOLVED FIXED
Alias: None
Product: WebKit
Classification: Unclassified
Component: Layout and Rendering (show other bugs)
Version: 528+ (Nightly build)
Hardware: Macintosh OS X 10.7
: P2 Normal
Assignee: Beth Dakin
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2012-05-10 16:47 PDT by Beth Dakin
Modified: 2012-05-11 13:34 PDT (History)
3 users (show)

See Also:


Attachments
Patch (4.48 KB, patch)
2012-05-10 16:56 PDT, Beth Dakin
darin: review+
Details | Formatted Diff | Diff

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Description Beth Dakin 2012-05-10 16:47:21 PDT
Overlay scrollbars without layers never paint in overflow regions in tiled drawing mode. 

<rdar://problem/11289546>
Comment 1 Beth Dakin 2012-05-10 16:56:56 PDT
Created attachment 141295 [details]
Patch
Comment 2 Darin Adler 2012-05-10 17:16:47 PDT
Comment on attachment 141295 [details]
Patch

Can we land a regression test for this? Manual test if necessary?
Comment 3 Beth Dakin 2012-05-10 17:22:18 PDT
We don't have a way to test overlay scrollbars, and we also don't have a way to test tiled drawing. Even the very simplest <div style="overflow:scroll"> will demonstrate the bug (so long as there is enough overflow to require the scrollbar). I definitely could land a manual test like that, but it's so simple that I'm not sure it's valuable. Is it?
Comment 4 Beth Dakin 2012-05-11 13:34:28 PDT
 http://trac.webkit.org/changeset/116711