<?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>64915</bug_id>
          
          <creation_ts>2011-07-20 18:22:16 -0700</creation_ts>
          <short_desc>[chromium] Compositor should take slow path for scrolling iframes</short_desc>
          <delta_ts>2011-07-21 16:49:57 -0700</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>WebCore Misc.</component>
          <version>528+ (Nightly build)</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>DUPLICATE</resolution>
          <dup_id>64991</dup_id>
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords></keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Adrienne Walker">enne</reporter>
          <assigned_to name="Adrienne Walker">enne</assigned_to>
          <cc>enne</cc>
    
    <cc>jamesr</cc>
    
    <cc>vangelis</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>440170</commentid>
    <comment_count>0</comment_count>
    <who name="Adrienne Walker">enne</who>
    <bug_when>2011-07-20 18:22:16 -0700</bug_when>
    <thetext>When --force-compositing-mode is turned on, iframes (in gmail) take the fast path scrolling because they think they can blit to the window.  The Chromium compositor only handles the root layer blitting to the window, and so it scrolls and invalidates the contents incorrectly.

An easier approach to fix this in the short term would be to make the compositor take the slow path by changing the &quot;can blit to window&quot; triggers.

See: http://crbug.com/81048</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>440718</commentid>
    <comment_count>1</comment_count>
    <who name="Adrienne Walker">enne</who>
    <bug_when>2011-07-21 16:49:57 -0700</bug_when>
    <thetext>

*** This bug has been marked as a duplicate of bug 64991 ***</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>