<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<!DOCTYPE bugzilla SYSTEM "https://bugs.webkit.org/page.cgi?id=bugzilla.dtd">

<bugzilla version="5.0.4.1"
          urlbase="https://bugs.webkit.org/"
          
          maintainer="admin@webkit.org"
>

    <bug>
          <bug_id>179871</bug_id>
          
          <creation_ts>2017-11-18 21:19:31 -0800</creation_ts>
          <short_desc>Remove slow repaint object from FrameView when style changes.</short_desc>
          <delta_ts>2017-11-20 09:19:02 -0800</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>Layout and Rendering</component>
          <version>WebKit Nightly Build</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>FIXED</resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords>InRadar</keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="alan">zalan</reporter>
          <assigned_to name="alan">zalan</assigned_to>
          <cc>bfulgham</cc>
    
    <cc>commit-queue</cc>
    
    <cc>ddkilzer</cc>
    
    <cc>koivisto</cc>
    
    <cc>simon.fraser</cc>
    
    <cc>zalan</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1373640</commentid>
    <comment_count>0</comment_count>
    <who name="alan">zalan</who>
    <bug_when>2017-11-18 21:19:31 -0800</bug_when>
    <thetext>rdar://problem/34949171</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1373722</commentid>
    <comment_count>1</comment_count>
      <attachid>327353</attachid>
    <who name="alan">zalan</who>
    <bug_when>2017-11-19 18:34:45 -0800</bug_when>
    <thetext>Created attachment 327353
Patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1373723</commentid>
    <comment_count>2</comment_count>
      <attachid>327353</attachid>
    <who name="alan">zalan</who>
    <bug_when>2017-11-19 18:35:46 -0800</bug_when>
    <thetext>Comment on attachment 327353
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=327353&amp;action=review

&gt; Source/WebCore/rendering/RenderElement.cpp:921
&gt; +        if (drawsRootBackground &amp;&amp; newStyle.hasEntirelyFixedBackground() &amp;&amp; view().compositor().supportsFixedRootBackgroundCompositing())
&gt; +            newStyleSlowScroll = false;

or simply newStyleSlowScroll = !((drawsRootBackground &amp;&amp; newStyle.hasEntirelyFixedBackground() &amp;&amp; view().compositor().supportsFixedRootBackgroundCompositing()));</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1373793</commentid>
    <comment_count>3</comment_count>
      <attachid>327353</attachid>
    <who name="WebKit Commit Bot">commit-queue</who>
    <bug_when>2017-11-20 09:19:00 -0800</bug_when>
    <thetext>Comment on attachment 327353
Patch

Clearing flags on attachment: 327353

Committed r225052: &lt;https://trac.webkit.org/changeset/225052&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1373794</commentid>
    <comment_count>4</comment_count>
    <who name="WebKit Commit Bot">commit-queue</who>
    <bug_when>2017-11-20 09:19:02 -0800</bug_when>
    <thetext>All reviewed patches have been landed.  Closing bug.</thetext>
  </long_desc>
      
          <attachment
              isobsolete="0"
              ispatch="1"
              isprivate="0"
          >
            <attachid>327353</attachid>
            <date>2017-11-19 18:34:45 -0800</date>
            <delta_ts>2017-11-20 09:19:00 -0800</delta_ts>
            <desc>Patch</desc>
            <filename>bug-179871-20171119183444.patch</filename>
            <type>text/plain</type>
            <size>9077</size>
            <attacher name="alan">zalan</attacher>
            
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          </attachment>
      

    </bug>

</bugzilla>