RESOLVED FIXED 170986
Avoid repaints for invisible animations on tumblr.com/search/aww 
https://bugs.webkit.org/show_bug.cgi?id=170986
Summary Avoid repaints for invisible animations on tumblr.com/search/aww
Antti Koivisto
Reported 2017-04-19 03:57:10 PDT
There is an invisible CSS animation here that is triggering unnecessary repaints.
Attachments
patch (3.98 KB, patch)
2017-04-19 04:05 PDT, Antti Koivisto 		kling: review+
DetailsFormatted DiffDiff
View All Add attachment proposed patch, testcase, etc.
Antti Koivisto
Comment 1 2017-04-19 03:57:26 PDT
<rdar://problem/28644580>
Antti Koivisto
Comment 2 2017-04-19 04:05:15 PDT
Created attachment 307475 [details] patch
Antti Koivisto
Comment 3 2017-04-19 05:18:19 PDT
https://trac.webkit.org/r215507
Darin Adler
Comment 4 2017-04-20 10:44:11 PDT
Comment on attachment 307475 [details] patch View in context: https://bugs.webkit.org/attachment.cgi?id=307475&action=review > Source/WebCore/rendering/style/RenderStyle.cpp:852 > + if (style.visibility() == HIDDEN) > + return false; > + if (!style.opacity()) > + return false; > + return true; Not at all critical but I would have liked writing it like this: return style.visibility() != HIDDEN && style.opacity(); And probably explicitly specified inline too.
Antti Koivisto
Comment 5 2017-04-20 11:41:26 PDT
> Not at all critical but I would have liked writing it like this: That approach turns incomprehensible when additional and more complex conditions are added (we have plenty of examples). Granted, two conditions is not there yet.
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