Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!bloom-beacon!SUN.COM!dshr
From: dshr@SUN.COM (David Rosenthal)
Newsgroups: comp.windows.x
Subject: Color on Suns
Message-ID: <8808152051.AA00237@devnull.sun.com>
Date: 15 Aug 88 18:44:14 GMT
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
Lines: 28

> Is color support (on the Sun 4) planned for the Sun server under release 3
> of X11 ?  How about backing store ?

	The R2 release supports color (at its normal lethargic pace)
	on Sun4/260C and Sun4/110C configurations.
	
	Adam de Boor has supplied MIT with backing store support
	that is machine independent - we use it on all Sun
	configurations.

> 
> I also have a question about how the Sun server is implemented:
> 	Does it use pixrect calls for all of the graphic operations ?
> If not, where are all of the low level routines that write to the frame
> buffer.  I have been looking under server/ddx/sun for the source that
> does this, but I am a little confused.
> 
	All the code to drive all Sun displays by treating them all
	as memory is contained in the directories ddx/sun,  ddx/mi,
	ddx/mfb,  and ddx/cfb.  The fact that the server treats all
	Sun displays as memory,  without using the hardware ROP
	support,  is part of the reason why it is slow on color Suns.
	No pixrect code is used at all.

	For details,  see the paper "Godzilla's Guide" that Adam &
	I wrote - it is in the R2 documentation.

	David.