<s>
Xephyr	B-Device
is	O
display	O
server	O
software	O
implementing	O
the	O
X11	B-Operating_System
display	O
server	O
protocol	O
based	O
on	O
KDrive	B-Operating_System
which	O
targets	O
a	O
window	O
on	O
a	O
host	O
X	B-Operating_System
Server	O
as	O
its	O
framebuffer	B-Algorithm
.	O
</s>
<s>
Xephyr	B-Device
is	O
an	O
X-on-X	O
implementation	O
and	O
runs	O
on	O
X.Org	B-Operating_System
Server	I-Operating_System
and	O
can	O
work	O
with	O
Glamor	B-Application
.	O
</s>
<s>
Future	O
versions	O
could	O
make	O
use	O
of	O
libinput	B-Language
.	O
</s>
<s>
Replacing	O
Xephyr	B-Device
with	O
the	O
xf86-video-dummy	O
and	O
xf86-video-nested	O
drivers	O
in	O
the	O
normal	O
X.Org	B-Operating_System
server	I-Operating_System
is	O
being	O
considered	O
as	O
part	O
of	O
X11R7.8	O
.	O
</s>
<s>
Unlike	O
the	O
similar	O
Xnest	O
,	O
Xephyr	B-Device
supports	O
modern	O
X	B-Operating_System
extensions	O
(	O
even	O
if	O
host	O
server	O
does	O
n't	O
)	O
such	O
as	O
composite	O
,	O
damage	O
,	O
randr	O
,	O
etc	O
.	O
</s>
<s>
It	O
uses	O
SHM	B-Device
images	O
and	O
shadow	O
framebuffer	B-Algorithm
updates	O
to	O
provide	O
good	O
performance	O
.	O
</s>
<s>
Xorg	B-Operating_System
's	O
version	O
of	O
Xephyr	B-Device
uses	O
only	O
software	O
rendering	O
for	O
OpenGL	B-Application
,	O
but	O
Feng	O
Haitao	O
has	O
developed	O
a	O
which	O
can	O
do	O
hardware-accelerated	O
rendering	O
if	O
the	O
underlying	O
X	B-Operating_System
server	O
has	O
the	O
capability	O
.	O
</s>
