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<!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>256535</bug_id>
          
          <creation_ts>2023-05-09 11:18:37 -0700</creation_ts>
          <short_desc>[GPU Process][Filters] Top level SVGFilter should own its FilterResults</short_desc>
          <delta_ts>2023-05-11 18:50:46 -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>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>
          
          <blocked>232845</blocked>
          <everconfirmed>1</everconfirmed>
          <reporter name="Said Abou-Hallawa">sabouhallawa</reporter>
          <assigned_to name="Said Abou-Hallawa">sabouhallawa</assigned_to>
          <cc>bfulgham</cc>
    
    <cc>simon.fraser</cc>
    
    <cc>webkit-bug-importer</cc>
    
    <cc>zalan</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1954085</commentid>
    <comment_count>0</comment_count>
    <who name="Said Abou-Hallawa">sabouhallawa</who>
    <bug_when>2023-05-09 11:18:37 -0700</bug_when>
    <thetext>This will allow caching the FilterResults along with the SVGFilter in RemoteResourceCache. The solution has to consider the following cases for the SVGFilter &amp; FilterResults:

a. SVGFilter is created in WebProcess:
    1. Rendering in WebProcess:
        i. Top level SVGFilter: SVGFilter creates its FilterResults. SVGFilter caches its FilterResults (will be implemented by this bug).
       ii. Referenced SVGFilter: SVGFilter should not create FilterResults.
    2. Rendering in GPUProcess:
        i. Top level SVGFilter: SVGFilter should not create FilterResults (will be fixed by this bug).
       ii. Referenced SVGFilter: SVGFilter should not create FilterResults.
b. SVGFilter is created in GPUProcess:
    1. Rendering in GPUProcess:
        i. Top level SVGFilter: SVGFilter creates its FilterResults (Memory has to be attributed to WebProcess). SVGFilter caches its FilterResults (will be implemented in another bug).
       ii. Referenced SVGFilter: SVGFilter should not create FilterResults.

To do that GraphicsContext::drawFilteredImageBuffer() has to take FilterResultsEnsurer which returns FilterResults&amp;. drawFilteredImageBuffer() will call it only when the FilterResults is needed.  SVGFilter::ensureResults() will return FilterResults&amp; and it takes FilterResultsCreator. FilterResultsCreator will return a std::unique_ptr&lt;FilterResults&gt; which SVGFilter will maintain.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1954086</commentid>
    <comment_count>1</comment_count>
    <who name="Radar WebKit Bug Importer">webkit-bug-importer</who>
    <bug_when>2023-05-09 11:19:25 -0700</bug_when>
    <thetext>&lt;rdar://problem/109107572&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1954094</commentid>
    <comment_count>2</comment_count>
    <who name="Said Abou-Hallawa">sabouhallawa</who>
    <bug_when>2023-05-09 11:45:30 -0700</bug_when>
    <thetext>Pull request: https://github.com/apple/WebKit/pull/587</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1954124</commentid>
    <comment_count>3</comment_count>
    <who name="Said Abou-Hallawa">sabouhallawa</who>
    <bug_when>2023-05-09 13:46:42 -0700</bug_when>
    <thetext>Pull request: https://github.com/WebKit/WebKit/pull/13652</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1954211</commentid>
    <comment_count>4</comment_count>
    <who name="Said Abou-Hallawa">sabouhallawa</who>
    <bug_when>2023-05-09 18:22:20 -0700</bug_when>
    <thetext>Pull request: https://github.com/WebKit/WebKit/pull/13676</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1954880</commentid>
    <comment_count>5</comment_count>
    <who name="EWS">ews-feeder</who>
    <bug_when>2023-05-11 18:50:44 -0700</bug_when>
    <thetext>Committed 263996@main (b860110f0ae4): &lt;https://commits.webkit.org/263996@main&gt;

Reviewed commits have been landed. Closing PR #13676 and removing active labels.</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>