<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 - Weston renders sub-surface even if parent is not mapped"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94735">94735</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Weston renders sub-surface even if parent is not mapped
</td>
</tr>
<tr>
<th>Product</th>
<td>Wayland
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>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>weston
</td>
</tr>
<tr>
<th>Assignee</th>
<td>wayland-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>mgraesslin@kde.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=122602" name="attach_122602" title="WAYLAND_DEBUG output">attachment 122602</a> <a href="attachment.cgi?id=122602&action=edit" title="WAYLAND_DEBUG output">[details]</a></span>
WAYLAND_DEBUG output
Weston renders sub-surfaces with a not mapped parent. According to the Wayland
spec a sub-surface should only be mapped if the parent is mapped: "A
sub-surface becomes mapped, when a non-NULL wl_buffer is applied and the parent
surface is mapped."
To reproduce:
* run systemsettings5
* go to Desktop Behavior -> Desktop Effects
* this creates a sub-surface tree with not mapped parents, but the child is
visible
Please see the attached log with WAYLAND_DEBUG of systemsettings. The last
child which is incorrectly rendered is wl_surface@97 which is a sub-surface to
wl_surface@65, but wl_surface@65 never gets a buffer attached.
This is of course also a client bug which is reported at
<a href="https://bugreports.qt.io/browse/QTBUG-52192">https://bugreports.qt.io/browse/QTBUG-52192</a>, but of course the compositor
should behave according to the spec ;-)</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>