126570 2014-01-07 02:55:40 -0800 REGRESSION(r161381): [GTK] Rendering is broken in GTK after r161381 2014-01-07 11:57:44 -0800 1 1 1 Unclassified WebKit Platform 528+ (Nightly build) Unspecified Unspecified RESOLVED FIXED Gtk, Regression P2 Normal --- 1 cgarcia webkit-unassigned abucur changseok commit-queue esprehn+autocc glenn jinwoo7.song kondapallykalyan ryuan.choi simon.fraser thorton WebkitBugTracker oldest_to_newest 964936 0 cgarcia 2014-01-07 02:55:40 -0800 Both GtkLauncher and MiniBrowser don't render anything after r161381. http://build.webkit.org/builders/GTK%20Linux%2064-bit%20Release/builds/43685/steps/layout-test 964991 1 cgarcia 2014-01-07 06:46:47 -0800 I think the problem has to do with the LayoutRect/IntRect conversion in RenderLayer.cpp. Using LayoutRect::infiniteRect() for the clips in RenderLayer.cpp fixes the problem. 965037 2 220532 cgarcia 2014-01-07 09:18:10 -0800 Created attachment 220532 Patch Using LayoutRect::infinteRect() instead of IntRect::infinteRect() when a LayoutRect is expected fixes the problem. 965041 3 abucur 2014-01-07 09:30:16 -0800 This may not be related, but while working on the CSS Regions visual overflow patch we noticed the cairo based GraphicsContext was not able to clip using the infiniteRect(). It seems to cause an integer overflow in cairo and it clips using a completely wrong rectangle. It's probably a good idea to make infiniteRect platform specific, based on the limitations of the underlying graphics library. 965044 4 cgarcia 2014-01-07 09:38:25 -0800 I don't know the details, but the Int/FloatRect::infiniteRect() is not defined the same way than the LayoutRect one, see: LayoutRect: LayoutUnit::nearlyMin() / 2, LayoutUnit::nearlyMin() / 2, LayoutUnit::nearlyMax(), LayoutUnit::nearlyMax() which substituting nearlyMin/Max would be something like (std::numeric_limits<int>::min() / 2) / 2, (std::numeric_limits<int>::min() / 2) / 2, std::numeric_limits<int>::max() / 2, std::numeric_limits<int>::max() / 2 IntRect: -std::numeric_limits<int>::max() / 2, -std::numeric_limits<int>::max() / 2, std::numeric_limits<int>::max(), std::numeric_limits<int>::max() 965100 5 220532 thorton 2014-01-07 11:53:08 -0800 Comment on attachment 220532 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=220532&action=review > Source/WebCore/ChangeLog:9 > + Use LayoutRect::infiniteRect() instead of IntRect::infiniteRect() > + when a LayoutRect is expected. Whoops :( 965103 6 cgarcia 2014-01-07 11:57:44 -0800 Committed r161443: <http://trac.webkit.org/changeset/161443> 220532 2014-01-07 09:18:10 -0800 2014-01-07 11:53:08 -0800 Patch wkcore-infinite-rect.diff text/plain 7851 cgarcia ZGlmZiAtLWdpdCBhL1NvdXJjZS9XZWJDb3JlL0NoYW5nZUxvZyBiL1NvdXJjZS9XZWJDb3JlL0No YW5nZUxvZwppbmRleCA3ZTA1M2JiLi41NWQ1N2MxIDEwMDY0NAotLS0gYS9Tb3VyY2UvV2ViQ29y ZS9DaGFuZ2VMb2cKKysrIGIvU291cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCkBAIC0xLDMgKzEsMjMg QEAKKzIwMTQtMDEtMDcgIENhcmxvcyBHYXJjaWEgQ2FtcG9zICA8Y2dhcmNpYUBpZ2FsaWEuY29t PgorCisgICAgICAgIFJFR1JFU1NJT04ocjE2MTM4MSk6IFtHVEtdIFJlbmRlcmluZyBpcyBicm9r ZW4gaW4gR1RLIGFmdGVyIHIxNjEzODEKKyAgICAgICAgaHR0cHM6Ly9idWdzLndlYmtpdC5vcmcv c2hvd19idWcuY2dpP2lkPTEyNjU3MAorCisgICAgICAgIFJldmlld2VkIGJ5IE5PQk9EWSAoT09Q UyEpLgorCisgICAgICAgIFVzZSBMYXlvdXRSZWN0OjppbmZpbml0ZVJlY3QoKSBpbnN0ZWFkIG9m IEludFJlY3Q6OmluZmluaXRlUmVjdCgpCisgICAgICAgIHdoZW4gYSBMYXlvdXRSZWN0IGlzIGV4 cGVjdGVkLgorCisgICAgICAgICogcmVuZGVyaW5nL1JlbmRlckZsb3dUaHJlYWQuY3BwOgorICAg 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