If QPainter does not have clipping, beginPlatformTransparencyLayer can create wrong size pixmap, so it causes incorrect rendering.
Created attachment 129005 [details] patch
Created attachment 129006 [details] patch v.2
Bug 79659 waits for this patch.
(In reply to comment #3) > Bug 79659 waits for this patch. Then let's make it blocking :)
Comment on attachment 129006 [details] patch v.2 Rejecting attachment 129006 [details] from commit-queue. Failed to run "['/mnt/git/webkit-commit-queue/Tools/Scripts/webkit-patch', '--status-host=queues.webkit.org', '-..." exit_code: 1 ERROR: /mnt/git/webkit-commit-queue/ChangeLog neither lists a valid reviewer nor contains the string "Unreviewed" or "Rubber stamp" (case insensitive). Full output: http://queues.webkit.org/results/11770496
Committed r109347: <http://trac.webkit.org/changeset/109347>