<?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>180002</bug_id>
          
          <creation_ts>2017-11-24 04:21:04 -0800</creation_ts>
          <short_desc>Make reconcileViewportConstrainedLayerPositions start from a specified scrolling node</short_desc>
          <delta_ts>2018-11-29 13:23:36 -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>Frames</component>
          <version>WebKit Nightly Build</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>FIXED</resolution>
          
          <see_also>https://bugs.webkit.org/show_bug.cgi?id=179946</see_also>
          <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>
          <dependson>182868</dependson>
          <blocked>149264</blocked>
    
    <blocked>171667</blocked>
          <everconfirmed>1</everconfirmed>
          <reporter name="Frédéric Wang Nélar">fred.wang</reporter>
          <assigned_to name="Frédéric Wang Nélar">fred.wang</assigned_to>
          <cc>cmarcelo</cc>
    
    <cc>commit-queue</cc>
    
    <cc>ews-watchlist</cc>
    
    <cc>jamesr</cc>
    
    <cc>luiz</cc>
    
    <cc>simon.fraser</cc>
    
    <cc>tonikitoo</cc>
    
    <cc>webkit-bug-importer</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1374567</commentid>
    <comment_count>0</comment_count>
      <attachid>327541</attachid>
    <who name="Frédéric Wang Nélar">fred.wang</who>
    <bug_when>2017-11-24 04:21:04 -0800</bug_when>
    <thetext>Created attachment 327541
Patch

In bug 179946, I&apos;m mentioning that reconcileLayerPositionForViewportRect does not affect children deeper than the root node. Additionally, when the function is called for subframes, the &quot;reconcile layer position&quot; is still only applied from the root node, not the subframe node.

The attached patch tries to address that. However, as in bug 179946 I&apos;m not sure about an effect of reconcileLayerPositionForViewportRect that I can test. I tried my patch with the experimental macOS async frame scrolling but still can not see any difference.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1389322</commentid>
    <comment_count>1</comment_count>
      <attachid>331341</attachid>
    <who name="Frédéric Wang Nélar">fred.wang</who>
    <bug_when>2018-01-15 09:18:59 -0800</bug_when>
    <thetext>Created attachment 331341
Patch (applies on top of bugs 173833 and 179946)

An alternative version applying on top of bugs 173833 and 179946. The test outputs the layer tree. But I&apos;m still not sure how to exhibit a difference with the old code.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1398998</commentid>
    <comment_count>2</comment_count>
      <attachid>333773</attachid>
    <who name="Frédéric Wang Nélar">fred.wang</who>
    <bug_when>2018-02-13 23:52:47 -0800</bug_when>
    <thetext>Created attachment 333773
Patch

Rebasing</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1399872</commentid>
    <comment_count>3</comment_count>
      <attachid>334038</attachid>
    <who name="Frédéric Wang Nélar">fred.wang</who>
    <bug_when>2018-02-16 06:10:31 -0800</bug_when>
    <thetext>Created attachment 334038
Patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1480952</commentid>
    <comment_count>4</comment_count>
      <attachid>355470</attachid>
    <who name="Frédéric Wang Nélar">fred.wang</who>
    <bug_when>2018-11-22 06:13:06 -0800</bug_when>
    <thetext>Created attachment 355470
Patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1480953</commentid>
    <comment_count>5</comment_count>
    <who name="Frédéric Wang Nélar">fred.wang</who>
    <bug_when>2018-11-22 06:15:23 -0800</bug_when>
    <thetext>@Simon: Can you please take a look at this patch?</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1483123</commentid>
    <comment_count>6</comment_count>
      <attachid>355470</attachid>
    <who name="WebKit Commit Bot">commit-queue</who>
    <bug_when>2018-11-29 13:22:11 -0800</bug_when>
    <thetext>Comment on attachment 355470
Patch

Clearing flags on attachment: 355470

Committed r238690: &lt;https://trac.webkit.org/changeset/238690&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1483124</commentid>
    <comment_count>7</comment_count>
    <who name="WebKit Commit Bot">commit-queue</who>
    <bug_when>2018-11-29 13:22:13 -0800</bug_when>
    <thetext>All reviewed patches have been landed.  Closing bug.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1483126</commentid>
    <comment_count>8</comment_count>
    <who name="Radar WebKit Bug Importer">webkit-bug-importer</who>
    <bug_when>2018-11-29 13:23:36 -0800</bug_when>
    <thetext>&lt;rdar://problem/46352107&gt;</thetext>
  </long_desc>
      
          <attachment
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              isprivate="0"
          >
            <attachid>327541</attachid>
            <date>2017-11-24 04:21:04 -0800</date>
            <delta_ts>2018-02-13 23:52:47 -0800</delta_ts>
            <desc>Patch</desc>
            <filename>0001-reconcile-iframe.patch</filename>
            <type>text/plain</type>
            <size>9443</size>
            <attacher name="Frédéric Wang Nélar">fred.wang</attacher>
            
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          </attachment>
          <attachment
              isobsolete="1"
              ispatch="1"
              isprivate="0"
          >
            <attachid>331341</attachid>
            <date>2018-01-15 09:18:59 -0800</date>
            <delta_ts>2018-02-13 23:52:47 -0800</delta_ts>
            <desc>Patch (applies on top of bugs 173833 and 179946)</desc>
            <filename>0001-Bug-180002-ScrollingStateNode-reconcileLayerPosition.patch</filename>
            <type>text/plain</type>
            <size>13079</size>
            <attacher name="Frédéric Wang Nélar">fred.wang</attacher>
            
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          </attachment>
          <attachment
              isobsolete="1"
              ispatch="1"
              isprivate="0"
          >
            <attachid>333773</attachid>
            <date>2018-02-13 23:52:47 -0800</date>
            <delta_ts>2018-02-16 06:10:31 -0800</delta_ts>
            <desc>Patch</desc>
            <filename>0001-Bug-180002-ScrollingStateNode-reconcileLayerPosition.patch</filename>
            <type>text/plain</type>
            <size>7409</size>
            <attacher name="Frédéric Wang Nélar">fred.wang</attacher>
            
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          </attachment>
          <attachment
              isobsolete="1"
              ispatch="1"
              isprivate="0"
          >
            <attachid>334038</attachid>
            <date>2018-02-16 06:10:31 -0800</date>
            <delta_ts>2018-11-22 06:12:59 -0800</delta_ts>
            <desc>Patch</desc>
            <filename>0001-Bug-180002-ScrollingStateNode-reconcileLayerPosition.patch</filename>
            <type>text/plain</type>
            <size>12884</size>
            <attacher name="Frédéric Wang Nélar">fred.wang</attacher>
            
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          </attachment>
          <attachment
              isobsolete="0"
              ispatch="1"
              isprivate="0"
          >
            <attachid>355470</attachid>
            <date>2018-11-22 06:13:06 -0800</date>
            <delta_ts>2018-11-29 13:22:11 -0800</delta_ts>
            <desc>Patch</desc>
            <filename>bug-180002-20181122151305.patch</filename>
            <type>text/plain</type>
            <size>7017</size>
            <attacher name="Frédéric Wang Nélar">fred.wang</attacher>
            
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</data>

          </attachment>
      

    </bug>

</bugzilla>