<html>
    <head>
      <base href="https://bugs.freedesktop.org/" />
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Tonga: Weston-drm direct scan out corruption"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=93866">93866</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Tonga: Weston-drm direct scan out corruption
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>DRI
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>DRI 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>DRM/AMDgpu
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>adf.lists@gmail.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=121287" name="attach_121287" title="external picture showing corruption">attachment 121287</a> <a href="attachment.cgi?id=121287&action=edit" title="external picture showing corruption">[details]</a></span>
external picture showing corruption

Testing both release and git wayland/weston on R9285.

Using weston-launch from fbcon so it uses weston-drm.

Apart from <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - weston client egl corruption above certain window size since radeonsi: Enable DCC."
   href="show_bug.cgi?id=93740">https://bugs.freedesktop.org/show_bug.cgi?id=93740</a> which can be
worked around, rendering is good when compositing.

If I run something that allows weston to enable direct scanout there is slight
corruption. kodi and mpv are the only ways I know to do this.

If I do something that changes back yo compositing the corruption goes, taking
a screen shot/recording or zooming in will all "fix" the corruption.

I am inferring direct scan out is happening as I can't change transparency +
the man page for weston-drm says it will be used where possible.

Tried going back in time with mesa to see if it ever worked, but I started
hitting places where either weston wouldn't start or I always got compositing
so no corruption but I could change transparency.</pre>
        </div>
      </p>
      <hr>
      <span>You are receiving this mail because:</span>
      
      <ul>
          <li>You are the assignee for the bug.</li>
      </ul>
    </body>
</html>