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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
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Checked in the following released items:
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+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
+
+