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From: dcmartin@POSTGRES.BERKELEY.EDU (David C. Martin)
Newsgroups: comp.windows.x
Subject: Re: X for color sun 3/60
Message-ID: <8711181614.AA07475@avalon.berkeley.edu>
Date: Wed, 18-Nov-87 11:14:15 EST
Article-I.D.: avalon.8711181614.AA07475
Posted: Wed Nov 18 11:14:15 1987
Date-Received: Sat, 21-Nov-87 10:31:30 EST
References: <1403@rtech.UUCP>
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: University of California at Berkeley - Dept of EECS/CS Division
Lines: 37

Sun tech support can't read manuals, apparently.  I have been hacking on 
10.4 to support the cg4 and the file is available for public ftp from
postgres.Berkeley.EDU.  If you can't get ftp access, let me know and I will
see that Joe Cortopossi gets a tape.

Anyway, in addition to the fixes for the cg4, there are some enhancements of
the basic Sun implementation (for dashed lines, etc...).  As for the ioctl
problem, this solves it:

    if ((fd = open(DEV_FB, O_RDWR, 0)) < 0) {
        fprintf(stderr, "Can't open device %s\n", DEV_FB);
        return(-1);
    }
    /* attempt to get attributes */
    if (ioctl(fd, FBIOGATTR, (char *) &fbgattr) < 0) {
        /* standard ioctl since cg4 special failed */
        if (ioctl(fd, FBIOGTYPE, (char *) &fbt) < 0) {
	    /* oops! */
            fprintf(stderr, "Can't access device %s.\n", DEV_FB);
            close(fd);
            return(-1);
        }
    } else {
        /* set video display to emulate itself */
        fbgattr.sattr.emu_type = fbgattr.real_type;
        /* do the ioctl */
        if (ioctl(fd, FBIOSATTR, (char *) &fbgattr.sattr) < 0) {
            fprintf(stderr, "Can't set the attribute emulation type");
            close(fd);
            return(-1);
        }
        /* use fbtype structure for real device */
        fbt = fbgattr.fbtype;
    }
    close(fd);

dcm