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      <base href="https://bugs.freedesktop.org/">
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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 - Unreal Engine corrupted preview viewport"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=97852">97852</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Unreal Engine corrupted preview viewport
          </td>
        </tr>

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

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

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

        <tr>
          <th>Reporter</th>
          <td>mw@graph-ix.net
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>dri-devel@lists.freedesktop.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=126603" name="attach_126603" title="Viewport corruption">attachment 126603</a> <a href="attachment.cgi?id=126603&action=edit" title="Viewport corruption">[details]</a></span>
Viewport corruption

Unreal Engine 4.13.1 editor shows corrupted preview viewports when at least one
of the following post-processing effects is active in a viewport:
* Motion Blur
* Tonemapper

A screenshot of a viewport segment is attached.

When both effects are turned off, viewports appear to render correctly.


Graphics card: AMD TONGA chipset (Radeo R9 380)
Mesa version: 12.1~git1600917222200.073129c~x~padoka0 on Ubuntu 16.04 with
Padoka PPA
glxinfo:
  OpenGL core profile version string: 4.3 (Core Profile) Mesa 12.1.0-devel -
padoka PPA
  OpenGL version string: 3.0 Mesa 12.1.0-devel - padoka PPA
  OpenGL ES profile version string: OpenGL ES 3.1 Mesa 12.1.0-devel - padoka
PPA</pre>
        </div>
      </p>


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