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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - High latency using GL_FEEDBACK mode"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=97489">97489</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>High latency using GL_FEEDBACK mode
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Mesa
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>11.0
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86-64 (AMD64)
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Drivers/DRI/i965
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>idr@freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>sancelot@free.fr
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>intel-3d-bugs@lists.freedesktop.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=126049" name="attach_126049" title="stops when glRenderMode has high latency test case">attachment 126049</a> <a href="attachment.cgi?id=126049&action=edit" title="stops when glRenderMode has high latency test case">[details]</a></span>
stops when glRenderMode has high latency test case

Hi,

for unknown reasons I noticed my GL application was very slow after migrating
to recent platforms.

after dissection of application, I found that has happened when using
GL_FEEDBACK rendermode. 

Sometime, it takes very long time. I made a single testcase app that monitors
time spent in it to reproduce the problem.

Regards
steph</pre>
        </div>
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