mirror of
https://gitlab.freedesktop.org/xorg/xserver.git
synced 2026-05-02 01:28:24 +02:00
cf30498fb8
If we have multiple damage rects we would sync (if we would sync) after
every hostx_paint_rect. For shm images you'd rather push all the
ShmPutImage requests and wait after the last one.
before after Operation
------------ -------------------- -------------------------
232000000.0 240000000.0 (1.034) Dot
41500000.0 41400000.0 (0.998) 1x1 rectangle
11400000.0 11400000.0 (1.000) 10x10 rectangle
553000.0 553000.0 (1.000) 100x100 rectangle
37300.0 38500.0 (1.032) 500x500 rectangle
831000.0 1140000.0 (1.372) PutImage 10x10 square
65200.0 134000.0 (2.055) PutImage 100x100 square
3410.0 3500.0 (1.026) PutImage 500x500 square
810000.0 1150000.0 (1.420) ShmPutImage 10x10 square
346000.0 364000.0 (1.052) ShmPutImage 100x100 square
22400.0 22800.0 (1.018) ShmPutImage 500x500 square
Reviewed-by: Emma Anholt <emma@anholt.net>
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|---|---|---|
| .. | ||
| man | ||
| .gitignore | ||
| ephyr.c | ||
| ephyr.h | ||
| ephyr_draw.c | ||
| ephyr_glamor.c | ||
| ephyr_glamor.h | ||
| ephyr_glamor_xv.c | ||
| ephyrcursor.c | ||
| ephyrinit.c | ||
| ephyrlog.h | ||
| ephyrvideo.c | ||
| hostx.c | ||
| hostx.h | ||
| meson.build | ||
| 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 Xnest's ( 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 negligible.
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 microseconds.
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
therefore not be of much use rotated.
- The '-host-cursor' cursor is static in its appearance.
- The build gets a warning about 'nanosleep'. I think the various '-D'
build flags are causing this. I haven't figured as yet how to work
around it. It doesn't appear to break anything however.
- Keyboard handling is basic but works.
- Mouse button 5 probably won't work.
Matthew Allum <mallum@o-hand.com> 2004