<?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>16504</bug_id>
          
          <creation_ts>2007-12-18 11:41:46 -0800</creation_ts>
          <short_desc>Regression: Transparency mis-decoded in interlaced GIFs</short_desc>
          <delta_ts>2007-12-18 18:39:43 -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>Images</component>
          <version>528+ (Nightly build)</version>
          <rep_platform>PC</rep_platform>
          <op_sys>All</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>DUPLICATE</resolution>
          <dup_id>16508</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>0</everconfirmed>
          <reporter name="Peter Kasting">pkasting</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>64654</commentid>
    <comment_count>0</comment_count>
    <who name="Peter Kasting">pkasting</who>
    <bug_when>2007-12-18 11:41:46 -0800</bug_when>
    <thetext>GIFImageDecoder.cpp (not used by Safari, but used by various other WebKit ports) has a bug I introduced several weeks ago which causes it to mis-decode transparent sections of interlaced GIFs, by not overwriting earlier rows&apos; opaque pixels with later rows&apos; transparent ones.

It&apos;s not too tricky to fix this.  Patch coming shortly.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>64684</commentid>
    <comment_count>1</comment_count>
    <who name="Mark Rowe (bdash)">mrowe</who>
    <bug_when>2007-12-18 18:39:43 -0800</bug_when>
    <thetext>

*** This bug has been marked as a duplicate of 16508 ***</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>