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When Xephyr is embedded into another application (e.g. in xoo), the input events may come from the parent Window instead of our own. So make sure we find the host screen in that case as well instead of crashing. Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk> Reviewed-by: Daniel Stone <daniel@fooishbar.org> |
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| man | ||
| .gitignore | ||
| ephyr.c | ||
| ephyr.h | ||
| ephyr_draw.c | ||
| ephyrdri.c | ||
| ephyrdri.h | ||
| ephyrdriext.c | ||
| ephyrdriext.h | ||
| ephyrglxext.c | ||
| ephyrglxext.h | ||
| ephyrhostglx.c | ||
| ephyrhostglx.h | ||
| ephyrhostproxy.c | ||
| ephyrhostproxy.h | ||
| ephyrhostvideo.c | ||
| ephyrhostvideo.h | ||
| ephyrinit.c | ||
| ephyrlog.h | ||
| ephyrproxyext.c | ||
| ephyrproxyext.h | ||
| ephyrvideo.c | ||
| hostx.c | ||
| hostx.h | ||
| Makefile.am | ||
| os.c | ||
| README | ||
| XF86dri.c | ||
| xf86dri.h | ||
Xephyr README
=============
What Is It ?
============
Xephyr is a a kdrive server that outputs to a window on a pre-existing
'host' X display. Think Xnest but with support for modern extensions
like composite, damage and randr.
Unlike Xnest which is an X proxy, i.e. limited to the
capabilities of the host X server, Xephyr is a real X server which
uses the host X server window as "framebuffer" via fast SHM XImages.
It also has support for 'visually' debugging what the server is
painting.
How To Use
==========
You probably want to run like;
Xephyr :1 -ac -screen 800x600 &
Then set DISPLAY=:1 and run whatever X apps you like.
Use 'xrandr' to change to orientation/size.
There is a '-parent' switch which works just like Xnests ( for use
with things like matchbox-nest - http://matchbox.handhelds.org ).
There is also a '-host-cursor' switch to set 'cursor acceleration' -
The host's cursor is reused. This is only really there to aid
debugging by avoiding server paints for the cursor. Performance
improvement is negiable.
Send a SIGUSR1 to the server ( eg kill -USR1 `pidof Xephyr` ) to
toggle the debugging mode. In this mode red rectangles are painted to
screen areas getting painted before painting the actual content. The
delay between this can be altered by setting a XEPHYR_PAUSE env var to
a value in micro seconds.
Caveats
=======
- Depth is limited to being the same as the host.
*Update* As of 8/11/2004. Xephyr can now do 8bpp & 16bpp
on 24bpp host.
- Rotated displays are currently updated via full blits. This
is slower than a normal oprientated display. Debug mode will
therefor not be of much use rotated.
- The '-host-cursor' cursor is static in its appearence.
- The build gets a warning about 'nanosleep'. I think the various '-D'
build flags are causing this. I havn't figured as yet how to work
round it. It doesn't appear to break anything however.
- Keyboard handling is basic but works.
- Mouse button 5 probably wont work.
Matthew Allum <mallum@o-hand.com> 2004