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xserver/hw/kdrive/ephyr
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Repository files (latest commit first)
Filename Latest commit message Latest commit date
Eric Anholt c947d796aa Missed in previous commit: Add a new migration scheme, called "Smart" for 
lack of a better name. This one behaves somewhat between Greedy and
    Always. It moves in if we can accelerate, unless the destination is
    clean and shouldn't be kept in framebuffer according to the score, in
    which case we migrate out (and force-migrate anything where migration
    is free). This should help fix lack of acceleration for drivers without
    UTS since removing exaAsyncPixmapGCOps, and has removed one performance
    trap with Radeon I'd noticed. It is the new default.
2006-04-18 19:18:43 +00:00
..
ephyr.c If fakexa is enabled, create a larger buffer in the Ximage, but keep the 2006-03-10 21:36:24 +00:00
ephyr.h Add an option to EXA for the DDX to request that EXA hide the pixmap's 2006-03-31 19:41:28 +00:00
ephyr_draw.c Missed in previous commit: Add a new migration scheme, called "Smart" for 2006-04-18 19:18:43 +00:00
ephyrinit.c Add a new flag to ephyr, "-fakexa", which turns on an EXA acceleration 2006-03-07 19:57:46 +00:00
hostx.c If fakexa is enabled, create a larger buffer in the Ximage, but keep the 2006-03-10 21:36:24 +00:00
hostx.h If fakexa is enabled, create a larger buffer in the Ximage, but keep the 2006-03-10 21:36:24 +00:00
Makefile.am Fix kdrive build by linking in libexa before KDRIVE_LIBS. 2006-04-17 07:10:31 +00:00
os.c
README

README 

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