RESOLVED WONTFIX114502
Use view-sized tiles during live window resize. 
https://bugs.webkit.org/show_bug.cgi?id=114502
Summary Use view-sized tiles during live window resize.
Andreas Kling
Reported 2013-04-12 04:06:14 PDT
On pages with very complex render trees, we can improve responsiveness during window resize by rendering everything into a single tile instead of multiple ones. This buys us a couple of FPS when resizing the MAS, for instance.
Attachments
Proposed patch (5.14 KB, patch)
2013-04-12 04:45 PDT, Andreas Kling 		simon.fraser: review-
buildbot: commit-queue-
DetailsFormatted DiffDiff
Archive of layout-test-results from webkit-ews-12 for mac-mountainlion-wk2 (795.29 KB, application/zip)
2013-04-12 05:52 PDT, Build Bot 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Radar WebKit Bug Importer
Comment 1 2013-04-12 04:07:43 PDT
<rdar://problem/13639664>
Andreas Kling
Comment 2 2013-04-12 04:45:46 PDT
Created attachment 197745 [details] Proposed patch
Build Bot
Comment 3 2013-04-12 05:52:21 PDT
Comment on attachment 197745 [details] Proposed patch Attachment 197745 [details] did not pass mac-wk2-ews (mac-wk2): Output: http://webkit-queues.appspot.com/results/131024 New failing tests: fast/repaint/japanese-rl-selection-repaint-in-regions.html
Build Bot
Comment 4 2013-04-12 05:52:23 PDT
Created attachment 197752 [details] Archive of layout-test-results from webkit-ews-12 for mac-mountainlion-wk2 The attached test failures were seen while running run-webkit-tests on the mac-wk2-ews. Bot: webkit-ews-12 Port: mac-mountainlion-wk2 Platform: Mac OS X 10.8.2
Simon Fraser (smfr)
Comment 5 2013-04-12 09:05:08 PDT
I'm not sure I like this. It can cause a lot of tile thrash. Can we just optimize the painting code to not have as much overhead when painting into tiles?
Andreas Kling
Comment 6 2013-04-12 09:40:23 PDT
(In reply to comment #5) > I'm not sure I like this. It can cause a lot of tile thrash. Do you mean in the case where resizing doesn't cause any relayout / dirtying? > Can we just optimize the painting code to not have as much overhead when painting into tiles? Probably. Any bright ideas? Perhaps we could merge vertically adjacent tiles and render them in one go, and then break them up into separate tiles.
Simon Fraser (smfr)
Comment 7 2013-04-12 11:28:46 PDT
Comment on attachment 197745 [details] Proposed patch I don't think we should do this.
Andreas Kling
Comment 8 2013-04-12 12:43:39 PDT
(In reply to comment #7) > (From update of attachment 197745 [details]) > I don't think we should do this. Yeah, okay.
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