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      <base href="https://bugs.freedesktop.org/" />
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        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [r300g] Carvisualizer webgl demo: black flickering spots over the car"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=60552">60552</a>
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>dri-devel@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[r300g] Carvisualizer webgl demo: black flickering spots over the car
          </td>
        </tr>

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

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>pavel.ondracka@email.cz
          </td>
        </tr>

        <tr>
          <th>URL</th>
          <td>http://carvisualizer.plus360degrees.com/threejs/
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Other
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>git
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Drivers/Gallium/r300
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Mesa
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=74497" name="attach_74497" title="screenshot">attachment 74497</a> <a href="attachment.cgi?id=74497&action=edit" title="screenshot">[details]</a></span>
screenshot

In the Car Visualizer Webgl demo, there are some flickering black spots on the
car. This is probably a bug in the shader compiler, as RADEON_DEBUG=noopt works
around this. Specifically its the register_rename pass that causes this, when
it is disabled in r3xx_fragprog.c, everything is fine. Also when I disable only
the dataflow optimize pass, there is still some flickering but much less.

Firefox 18.0
GPU:RV530
Mesa: 0e2f26d5ea26febd16173aa8bbf7427b090e320f
Kernel: 3.7.3-101.fc17.i686</pre>
        </div>
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