84480 2012-04-20 12:44:07 -0700 ASSERT failure in RenderLayer::computeRepaintRects 2012-04-24 18:58:41 -0700 1 1 1 Unclassified WebKit Layout and Rendering 528+ (Nightly build) Unspecified Unspecified RESOLVED FIXED P2 Normal --- 1 yong.li.webkit webkit-unassigned simon.fraser tonikitoo webkit.review.bot oldest_to_newest 606817 0 yong.li.webkit 2012-04-20 12:44:07 -0700 When accelerated compositing is enabled, an assert failure can occur in RenderLayer::computeRepaintRects: ASSERT(!m_visibleContentStatusDirty); #0 WebCore::RenderLayer::computeRepaintRects #1 WebCore::RenderLayerCompositor::updateBacking #2 WebCore::RenderLayerCompositor::updateLayerCompositingState ( #3 WebCore::RenderLayer::styleChanged (this=0x766bbb28, #4 WebCore::RenderBoxModelObject::styleDidChange The issue can be simply and obviously fixed by adding a call to updateVisibilityStatus() before styleChanged() calling compositor->updateLayerCompositingState(). Do I have to create a test case for it? 606829 1 138149 yong.li.webkit 2012-04-20 12:58:00 -0700 Created attachment 138149 The patch The problem is obvious and easy to fix. The patch doesn't include a test. Creating a test may need much more effort than fixing it, and probably doesn't worth for such a small flaw. 606873 2 138149 simon.fraser 2012-04-20 13:55:11 -0700 Comment on attachment 138149 The patch This should have a testcase. I haven't seen this assertion on Mac. 609000 3 138634 yong.li.webkit 2012-04-24 13:45:48 -0700 Created attachment 138634 With test case 609023 4 138634 simon.fraser 2012-04-24 14:01:31 -0700 Comment on attachment 138634 With test case View in context: https://bugs.webkit.org/attachment.cgi?id=138634&action=review > LayoutTests/compositing/visibility/compositing-and-visibility--turned-off-together.html:16 > +if (window.layoutTestController) > + layoutTestController.dumpAsText(); > + > +function dotest() > +{ > + document.getElementById('theelement').style.setProperty('visibility','hidden',''); > + document.getElementById('theelement').style.removeProperty('-webkit-perspective'); > + > + // force layout > + document.body.offsetTop; > +} > +</script> > +</head> > +<body onload="setTimeout(dotest,20)"> If you're using setTimeout, you need to use layoutTestController.waitUntilDone/notifyDone. 609050 5 138640 yong.li.webkit 2012-04-24 14:15:39 -0700 Created attachment 138640 with test case 609089 6 138640 yong.li.webkit 2012-04-24 14:42:13 -0700 Comment on attachment 138640 with test case Thanks Simon! 609372 7 138640 webkit.review.bot 2012-04-24 18:58:25 -0700 Comment on attachment 138640 with test case Clearing flags on attachment: 138640 Committed r115157: <http://trac.webkit.org/changeset/115157> 609373 8 webkit.review.bot 2012-04-24 18:58:41 -0700 All reviewed patches have been landed. Closing bug. 138149 2012-04-20 12:58:00 -0700 2012-04-24 13:45:48 -0700 The patch 84480.patch text/plain 479 yong.li.webkit ZGlmZiAtLWdpdCBhL1NvdXJjZS9XZWJDb3JlL3JlbmRlcmluZy9SZW5kZXJMYXllci5jcHAgYi9T b3VyY2UvV2ViQ29yZS9yZW5kZXJpbmcvUmVuZGVyTGF5ZXIuY3BwCmluZGV4IDEzMjg4MWYuLjZi YmRjNWEgMTAwNjQ0Ci0tLSBhL1NvdXJjZS9XZWJDb3JlL3JlbmRlcmluZy9SZW5kZXJMYXllci5j cHAKKysrIGIvU291cmNlL1dlYkNvcmUvcmVuZGVyaW5nL1JlbmRlckxheWVyLmNwcApAQCAtNDcx OSw2ICs0NzE5LDcgQEAgdm9pZCBSZW5kZXJMYXllcjo6c3R5bGVDaGFuZ2VkKFN0eWxlRGlmZmVy ZW5jZSwgY29uc3QgUmVuZGVyU3R5bGUqIG9sZFN0eWxlKQogI2VuZGlmCiAKICNpZiBVU0UoQUND RUxFUkFURURfQ09NUE9TSVRJTkcpCisgICAgdXBkYXRlVmlzaWJpbGl0eVN0YXR1cygpOwogICAg IHVwZGF0ZVRyYW5zZm9ybSgpOwogCiAgICAgaWYgKGNvbXBvc2l0b3IoKS0+dXBkYXRlTGF5ZXJD b21wb3NpdGluZ1N0YXRlKHRoaXMpKQo= 138634 2012-04-24 13:45:48 -0700 2012-04-24 14:01:30 -0700 With test case 84480.patch text/plain 3575 yong.li.webkit ZGlmZiAtLWdpdCBhL0xheW91dFRlc3RzL0NoYW5nZUxvZyBiL0xheW91dFRlc3RzL0NoYW5nZUxv 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