Path: utzoo!utgpu!utstat!jarvis.csri.toronto.edu!mailrus!ames!amdahl!oliveb!sun!david@sun.com
From: david@sun.com (Pixrects are *EVIL*)
Newsgroups: comp.windows.x
Subject: Re: How do I dynamically convert Sun Pixrects to X Pixmaps?
Message-ID: <90163@sun.uucp>
Date: 16 Feb 89 22:41:48 GMT
References: <242@tityus.UUCP>
Sender: david@sun.uucp
Lines: 21

In article <242@tityus.UUCP> jim@athsys.uucp (Jim Becker) writes:
>	        ximage->bitmap_pad      = 16;
>	        ximage->bytes_per_line  = (w + 7) / 8;

Here are the memory pixrect padding rules for various SunOS releases:

release		architecture	width		padding
-------		------------	-----		-------
all		Sun-2		all		16 bit
<= 3.5		Sun-3		all		16 bit
>= 4.0		Sun-3		2 bytes		16 bit
>= 4.0		Sun-3		>= 4 bytes	32 bit
all		Sun-4		2 bytes		16 bit
all	   	Sun-4		>= 4 bytes	32 bit

You should always use mpr_mdlinebytes(pr) instead of computing
bytes_per_line from pr->pr_width.

For details refer to the (4.0) pixrect manual.
-- 
David DiGiacomo, Sun Microsystems, Mt. View, CA  sun!david david@sun.com