<?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>256088</bug_id>
          
          <creation_ts>2023-04-28 05:07:19 -0700</creation_ts>
          <short_desc>Some Unity shaders slower on Metal than on OpenGL</short_desc>
          <delta_ts>2023-05-05 05:08:17 -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>ANGLE</component>
          <version>WebKit Local Build</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>NEW</bug_status>
          <resolution></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>255987</blocked>
          <everconfirmed>1</everconfirmed>
          <reporter name="Kimmo Kinnunen">kkinnunen</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          <cc>dino</cc>
    
    <cc>kbr</cc>
    
    <cc>kkinnunen</cc>
    
    <cc>webkit-bug-importer</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1951796</commentid>
    <comment_count>0</comment_count>
    <who name="Kimmo Kinnunen">kkinnunen</who>
    <bug_when>2023-04-28 05:07:19 -0700</bug_when>
    <thetext>See for example on bug 255987

On OpenGL, fullscreen Studio display 5120x2880 runs full rate, 60 fps.

On Metal, fullscreen Studio display 5120x2880 runs 32 fps.

Resizing the app to smaller window increases the frame rate.

Disabling the shaders in Web Inspector increases the frame rate.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1953130</commentid>
    <comment_count>1</comment_count>
    <who name="Radar WebKit Bug Importer">webkit-bug-importer</who>
    <bug_when>2023-05-05 05:08:17 -0700</bug_when>
    <thetext>&lt;rdar://problem/108943724&gt;</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>