Bug 79157

Summary: [chromium] Painting a layer clears opaque rect in untouched tiles
Product: WebKit Reporter: Dana Jansens <danakj>
Component: New BugsAssignee: Dana Jansens <danakj>
Status: RESOLVED FIXED    
Severity: Normal CC: backer, enne, jamesr, piman, webkit.review.bot
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Patch none

Dana Jansens
Reported 2012-02-21 15:42:01 PST
[chromium] Painting a layer clears opaque rect in untouched tiles
Attachments
Patch (7.28 KB, patch)
2012-02-21 16:46 PST, Dana Jansens 		no flags
DetailsFormatted DiffDiff
View All Add attachment proposed patch, testcase, etc.
Dana Jansens
Comment 1 2012-02-21 16:46:12 PST
Created attachment 128084 [details] Patch
James Robinson
Comment 2 2012-02-21 16:50:54 PST
Is this fixing a correctness bug or a performance improvement? I would expect that throwing away opaqueness could never result in an incorrect rendering, but might cause you to go slower sometimes.
Dana Jansens
Comment 3 2012-02-21 17:58:11 PST
Yes, performance. I noticed it while fixing the G+ bug, as many tiles were being drawn correctly when they should have stayed (incorrectly) opaque from the bug.
James Robinson
Comment 4 2012-02-21 18:08:20 PST
Comment on attachment 128084 [details] Patch Gotcha, thanks for the clarification. Looks good.
WebKit Review Bot
Comment 5 2012-02-21 18:45:02 PST
Comment on attachment 128084 [details] Patch Clearing flags on attachment: 128084 Committed r108431: <http://trac.webkit.org/changeset/108431>
WebKit Review Bot
Comment 6 2012-02-21 18:45:06 PST
All reviewed patches have been landed. Closing bug.
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