133704 2014-06-10 15:47:29 -0700 [Win] Port Mac Tiled Drawing Logic to Windows 2016-03-22 13:34:27 -0700 1 1 1 Unclassified WebKit Layout and Rendering 528+ (Nightly build) PC All RESOLVED FIXED P2 Normal --- 133819 133862 133895 1 bfulgham bfulgham bfulgham webkit.review.bot oldest_to_newest 1014560 0 bfulgham 2014-06-10 15:47:29 -0700 Certain markup can cause the Windows tiled drawing logic to waste resources laying out and rendering off-screen rectangle. This can be triggered if a DOM element has a style with a very large negative (e.g., -100,000) 'left' property. Our Mac code is much smarter about this kind of thing, and excludes rects that are not visible. We should do the same on Windows. 1177102 1 bfulgham 2016-03-22 13:34:27 -0700 This has been complete for some time.