--- ray/src/rt/rview.c	1989/06/07 21:00:54	1.3
+++ ray/src/rt/rview.c	1989/07/29 00:11:31	1.6
@@ -29,13 +29,14 @@ double  exposure = 1.0;			/* exposure for scene */
 
 double  dstrsrc = 0.0;			/* square source distribution */
 double  shadthresh = .1;		/* shadow threshold */
+double  shadcert = .25;			/* shadow certainty */
 
 int  maxdepth = 4;			/* maximum recursion depth */
 double  minweight = 1e-2;		/* minimum ray weight */
 
 COLOR  ambval = BLKCOLOR;		/* ambient value */
 double  ambacc = 0.2;			/* ambient accuracy */
-int  ambres = 64;			/* ambient resolution */
+int  ambres = 8;			/* ambient resolution */
 int  ambdiv = 32;			/* ambient divisions */
 int  ambssamp = 0;			/* ambient super-samples */
 int  ambounce = 0;			/* ambient bounces */
@@ -67,21 +68,22 @@ int  code;
 devopen(dname)				/* open device driver */
 char  *dname;
 {
-	extern char  *progname;
+	extern char  *progname, *octname;
 	char  *devargv[3];
 	register int  i;
+
+	devargv[0] = dname;
+	devargv[1] = octname!=NULL ? octname : progname;
+	devargv[2] = NULL;
 						/* check device table */
 	for (i = 0; devtable[i].name; i++)
 		if (!strcmp(dname, devtable[i].name))
-			if ((dev = (*devtable[i].init)(progname)) == NULL) {
+			if ((dev = (*devtable[i].init)(devargv[1])) == NULL) {
 				sprintf(errmsg, "cannot initialize %s", dname);
 				error(USER, errmsg);
 			} else
 				return;
 						/* not there, try exec */
-	devargv[0] = dname;
-	devargv[1] = progname;
-	devargv[2] = NULL;
 	if ((dev = comm_init(devargv)) == NULL) {
 		sprintf(errmsg, "cannot start device \"%s\"", dname);
 		error(USER, errmsg);