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    <body><span class="vcard"><a class="email" href="mailto:gman&#64;chromium.org" title="Gregg Tavares &lt;gman&#64;chromium.org&gt;"> <span class="fn">Gregg Tavares</span></a>
</span> changed
              <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - preserveDrawingBuffer=true wrongly double-buffers on current iOS h/w"
   href="https://bugs.webkit.org/show_bug.cgi?id=159608">bug 159608</a>
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            <th>What</th>
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               &nbsp;
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           <td>gman&#64;chromium.org
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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - preserveDrawingBuffer=true wrongly double-buffers on current iOS h/w"
   href="https://bugs.webkit.org/show_bug.cgi?id=159608#c2">Comment # 2</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - preserveDrawingBuffer=true wrongly double-buffers on current iOS h/w"
   href="https://bugs.webkit.org/show_bug.cgi?id=159608">bug 159608</a>
              from <span class="vcard"><a class="email" href="mailto:gman&#64;chromium.org" title="Gregg Tavares &lt;gman&#64;chromium.org&gt;"> <span class="fn">Gregg Tavares</span></a>
</span></b>
        <pre>I don't remember if I'm supposed to report this stuff but I also filed it as an apple bug 27317599

Also the conformance test fails on iOS

<a href="https://www.khronos.org/registry/webgl/sdk/tests/conformance/context/context-attribute-preserve-drawing-buffer.html?webglVersion=1&amp;quiet=0">https://www.khronos.org/registry/webgl/sdk/tests/conformance/context/context-attribute-preserve-drawing-buffer.html?webglVersion=1&amp;quiet=0</a></pre>
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