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Re: X11 and speed



Question inserted below.
Thanks
-Don

At 4:52 PM -0700 6/25/03, Sean Ahern wrote:
Brett Carrington wrote:
 It shouldn't.  Because in reality (ie.  on Linux) the abstraction layer
 looks at such:

 [ YOUR PROGRAM ]		[ YOUR PROGRAM ]
 [WINDOW MANAGER]	    [ quartz-wm ]
 [X WINDOWS SERVER]	[ X11.app ]
 [PROCESSOR]			[PROCESSOR]

Well, not quite. First off, I'd replace "PROCESSOR" with "VIDEO HARDWARE" since there are other layers there.

Then, on any X server, no matter what platform, the window manager does not
always act as an intermediary between your program and the X server.  It only
gets involved during move and resize operations (mostly).

Third, X11.app does not talk directly to the video hardware if you're running
in normal mode.  It has to go through Quartz first.  So the Mac stack (heh)
would look like:

 [ YOUR PROGRAM ]
 [ X11.app ]
 [ Quartz ]
 [ VIDEO HARDWARE]

How about with XFree86/XDarwin and some other window manager (not quartz-wm)? Instead of X11.app.


While the Linux version would look like:

 [ YOUR PROGRAM ]
 [ X SERVER ]
 [ VIDEO HARDWARE ]

-Sean

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--
--------------------------------------
Don MacQueen
Environmental Protection Department
Lawrence Livermore National Laboratory
Livermore, CA, USA
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x11-users mailing list | email@hidden
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Report issues, request features, feedback: http://developer.apple.com/bugreporter
Do not post admin requests to the list. They will be ignored.

References: 
 >X11 and speed (From: Amit Gandhi <email@hidden>)
 >Re: X11 and speed (From: Brett Carrington <email@hidden>)
 >Re: X11 and speed (From: Sean Ahern <email@hidden>)



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