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From: root%paul%uscacsc.UUCP@USC-CSE.USC.EDU.UUCP
Newsgroups: comp.windows.x
Subject: (none)
Message-ID: <8703111513.AA02458@paul.UUCP>
Date: Wed, 11-Mar-87 10:13:57 EST
Article-I.D.: paul.8703111513.AA02458
Posted: Wed Mar 11 10:13:57 1987
Date-Received: Fri, 13-Mar-87 02:03:58 EST
Sender: daemon@ucbvax.BERKELEY.EDU
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Organization: The ARPA Internet
Lines: 38


xdvi, as distributed for the RT,  does not run properly.  The bug is
due to the usual byte-ordering problem.  The following code addition
is needed in the read_pxl_bitmap() routine in dv.c .  It is placed at 
the end so the debug routines still display the characters properly. 
The extra code does just the proper byte swapping.  This will be needed
for other machines with a byte-ordering similar to the RT (Sun?).

Enjoy,

-- Marco Papa
   USC Advanced Computing Support Center

507,508d506
< 	register char *ptr2;	/* [MP] */
< 	register char tmp;
530d527
< 
535,547d531
< 	/* ******** CHANGES [MP] ******* */
< 	ptr = bitmap->bits;
< 	ptr2 = ptr + 1;
< 	for (i = 0; i < bitmap->h; i += 1)
< 		for (j = 0; j < bitmap->bytes_wide; j += 2)
< 		{
< 			tmp = *ptr;
< 			*ptr = *ptr2;
< 			*ptr2 = tmp;
< 			ptr += 2;
< 			ptr2 += 2;
< 		}
< 	/* ********* END OF CHANGE [MP] **** */




                                          ...Paul Nahi
					  uscacsc!paul@usc-cse.usc.edu