--- ray/src/util/rad.c	2021/01/21 21:36:28	2.128
+++ ray/src/util/rad.c	2023/11/16 23:37:29	2.132
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: rad.c,v 2.128 2021/01/21 21:36:28 greg Exp $";
+static const char	RCSid[] = "$Id: rad.c,v 2.132 2023/11/16 23:37:29 greg Exp $";
 #endif
 /*
  * Executive program for oconv, rpict and pfilt
@@ -64,7 +64,7 @@ static const char	RCSid[] = "$Id: rad.c,v 2.128 2021/0
 int NVARS = 31;
 
 VARIABLE	vv[] = {		/* variable-value pairs */
-	{"AMBFILE",	3,	0,	NULL,	onevalue},
+	{"AMBFILE",	3,	0,	NULL,	strvalue},
 	{"DETAIL",	3,	0,	NULL,	qualvalue},
 	{"EXPOSURE",	3,	0,	NULL,	fltvalue},
 	{"EYESEP",	3,	0,	NULL,	fltvalue},
@@ -75,15 +75,15 @@ VARIABLE	vv[] = {		/* variable-value pairs */
 	{"mkpmap",	3,	0,	NULL,	catvalues},
 	{"objects",	3,	0,	NULL,	catvalues},
 	{"oconv",	3,	0,	NULL,	catvalues},
-	{"OCTREE",	3,	0,	NULL,	onevalue},
-	{"OPTFILE",	3,	0,	NULL,	onevalue},
-	{"PCMAP",	2,	0,	NULL,	onevalue},
+	{"OCTREE",	3,	0,	NULL,	strvalue},
+	{"OPTFILE",	3,	0,	NULL,	strvalue},
+	{"PCMAP",	2,	0,	NULL,	strvalue},
 	{"PENUMBRAS",	3,	0,	NULL,	boolvalue},
 	{"pfilt",	2,	0,	NULL,	catvalues},
-	{"PGMAP",	2,	0,	NULL,	onevalue},
-	{"PICTURE",	3,	0,	NULL,	onevalue},
+	{"PGMAP",	2,	0,	NULL,	strvalue},
+	{"PICTURE",	3,	0,	NULL,	strvalue},
 	{"QUALITY",	3,	0,	NULL,	qualvalue},
-	{"RAWFILE",	3,	0,	NULL,	onevalue},
+	{"RAWFILE",	3,	0,	NULL,	strvalue},
 	{"render",	3,	0,	NULL,	catvalues},
 	{"REPORT",	3,	0,	NULL,	onevalue},
 	{"RESOLUTION",	3,	0,	NULL,	onevalue},
@@ -93,7 +93,7 @@ VARIABLE	vv[] = {		/* variable-value pairs */
 	{"UP",		2,	0,	NULL,	onevalue},
 	{"VARIABILITY",	3,	0,	NULL,	qualvalue},
 	{"view",	2,	0,	NULL,	NULL},
-	{"ZFILE",	2,	0,	NULL,	onevalue},
+	{"ZFILE",	2,	0,	NULL,	strvalue},
 	{"ZONE",	2,	0,	NULL,	onevalue},
 };
 
@@ -242,12 +242,18 @@ main(
 				/* load variable values */
 	loadvars(rifname);
 				/* get any additional assignments */
-	for (i++; i < argc; i++)
-		if (setvariable(argv[i], matchvar) < 0) {
-			fprintf(stderr, "%s: unknown variable: %s\n",
+	for (i++; i < argc; i++) {
+		int	rv = setvariable(argv[i], matchvar);
+		if (rv < 0) {
+			fprintf(stderr, "%s: unknown setting: %s\n",
 					progname, argv[i]);
 			quit(1);
 		}
+		if (!rv)
+			fprintf(stderr,
+			"%s: bad variable assignment: %s (ignored)\n",
+					progname, argv[i]);
+	}
 				/* check assignments */
 	checkvalues();
 				/* check files and dates */
@@ -924,7 +930,7 @@ lowqopts(			/* low quality rendering options */
 	d = ambval();
 	sprintf(op, " -av %.2g %.2g %.2g", d, d, d);
 	op += strlen(op);
-	op = addarg(op, "-lr 6 -lw .003");
+	op = addarg(op, "-lr 6 -lw .001");
 }
 
 
@@ -1078,7 +1084,7 @@ hiqopts(				/* high quality rendering options */
 	d = ambval();
 	sprintf(op, " -av %.2g %.2g %.2g", d, d, d);
 	op += strlen(op);
-	op = addarg(op, "-lr 12 -lw 1e-5");
+	op = addarg(op, "-lr 12 -lw 5e-6");
 }
 
 
@@ -1607,8 +1613,8 @@ rpict(				/* run rpict and pfilt for each view */
 		} else {
 			if (overture) {		/* run overture calculation */
 				sprintf(combuf,
-					"%s%s %s%s -x 64 -y 64 -ps 1 %s > %s",
-						c_rpict, rep, vw, opts,
+					"%s%s %s%s%s -x 64 -y 64 -ps 1 %s > %s",
+						c_rpict, rep, vw, opts, po,
 						oct1name, overfile);
 				if (!do_rpiece || !next_process(0)) {
 					if (runcom(combuf)) {