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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 --- - wayland/weston EGL/GLESv2 client corruption+flicker on mesa-10.x r600"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=72890">72890</a>
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>wayland-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>wayland/weston EGL/GLESv2 client corruption+flicker on mesa-10.x r600
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>mesa-dev@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>major
          </td>
        </tr>

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

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

        <tr>
          <th>Reporter</th>
          <td>emiettin@edu.lahti.fi
          </td>
        </tr>

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

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

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

        <tr>
          <th>Component</th>
          <td>EGL/Wayland
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Mesa
          </td>
        </tr></table>
      <p>
        <div>
        <pre>On my Radeon HD 5770, upgrading from mesa-9.2.5 to either mesa-10.0.1 or
mesa-git master introduces (in both versions) a corruption/flickering bug
concerning wayland/weston EGL/GLESv2 clients. See
<a href="http://www.youtube.com/watch?v=RQXE4h-E8PI">http://www.youtube.com/watch?v=RQXE4h-E8PI</a> for a relevant screen capture. 

It looks to me as if the glClear(GL_COLOR_BUFFER_BIT) call wasn't actually
coming into effect; instead, previous (or random) color data lingers in the
part of the frame buffer that isn't updated during rendering. The bug doesn't
really manifest itself in a weston client that updates each and every pixel
within each frame during rendering.

setup: Arch Linux x86_64 (Linux 3.12.5),
       mesa-git (+ ati-dri-git & mesa-libgl-git). Bug also in 10.0.1 stable.
       wayland/weston 1.3.0/1.3.1 as well as git</pre>
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      </p>
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