--- ray/src/util/rad.c	2015/10/28 02:52:17	2.123
+++ ray/src/util/rad.c	2023/01/24 21:54:49	2.130
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: rad.c,v 2.123 2015/10/28 02:52:17 greg Exp $";
+static const char	RCSid[] = "$Id: rad.c,v 2.130 2023/01/24 21:54:49 greg Exp $";
 #endif
 /*
  * Executive program for oconv, rpict and pfilt
@@ -17,7 +17,7 @@ static const char	RCSid[] = "$Id: rad.c,v 2.123 2015/1
 #include "paths.h"
 #include "vars.h"
 
-#ifdef _WIN32
+#if defined(_WIN32) || defined(_WIN64)
   #define DELCMD "del"
   #define RENAMECMD "rename"
 #else
@@ -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 */
@@ -556,9 +562,10 @@ oconv(void)				/* run oconv and mkillum if necessary *
 		return;
 						/* make octree0 */
 	if ((oct0date < scenedate) | (oct0date < illumdate)) {
-		if (touchonly && oct0date)
-			touch(oct0name);
-		else {				/* build command */
+		if (touchonly && (oct0date || oct1date)) {
+			if (oct0date)
+				touch(oct0name);
+		} else {			/* build command */
 			if (octreedate)
 				sprintf(combuf, "%s%s -i %s %s > %s", c_oconv,
 					ocopts, vval(OCTREE),
@@ -583,7 +590,7 @@ oconv(void)				/* run oconv and mkillum if necessary *
 			oct0date = octreedate;
 		if (oct0date < illumdate)	/* ditto */
 			oct0date = illumdate;
-		}
+	}
 	if (touchonly && oct1date)
 		touch(oct1name);
 	else {
@@ -752,7 +759,10 @@ mkpmapopts(				/* get mkpmap options */
 {
 	/* BEWARE:  This may be called via setdefaults(), so no assumptions */
 
-	*mo = '\0';
+	if (nprocs > 1)
+		sprintf(mo, " -n %d", nprocs);
+	else
+		*mo = '\0';
 	if (!vdef(MKPMAP))
 		return;
 	if (vval(MKPMAP)[0] != '-') {
@@ -786,8 +796,8 @@ ambval(void)				/* compute ambient value */
 {
 	if (vdef(EXPOSURE)) {
 		if (vval(EXPOSURE)[0] == '+' || vval(EXPOSURE)[0] == '-')
-			return(.5/pow(2.,vflt(EXPOSURE)));
-		return(.5/vflt(EXPOSURE));
+			return(.18/pow(2.,vflt(EXPOSURE)));
+		return(.18/vflt(EXPOSURE));
 	}
 	if (vlet(ZONE) == 'E')
 		return(10.);
@@ -830,8 +840,12 @@ renderopts(			/* set rendering options */
 		op = addarg(addarg(op, "-ap"), pmapf);
 		if (atoi(bw) > 0) op = addarg(op, bw);
 	}
-	if (vdef(RENDER))
+	if (vdef(RENDER)) {
 		op = addarg(op, vval(RENDER));
+		bw = strstr(vval(RENDER), "-aa ");
+		if (bw != NULL && atof(bw+4) <= FTINY)
+			overture = 0;
+	}
 	if (rvdevice != NULL) {
 		if (vdef(RVU)) {
 			if (vval(RVU)[0] != '-') {
@@ -916,7 +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");
 }
 
 
@@ -1070,11 +1084,11 @@ 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");
 }
 
 
-#ifdef _WIN32
+#if defined(_WIN32) || defined(_WIN64)
 static void
 setenv(			/* set an environment variable */
 	char	*vname,
@@ -1121,7 +1135,7 @@ xferopts(				/* transfer options if indicated */
 			syserr(vval(OPTFILE));
 		sprintf(ro, " @%s", vval(OPTFILE));
 	}
-#ifdef _WIN32
+#if defined(_WIN32) || defined(_WIN64)
 	else if (n > 50) {
 		setenv("ROPT", ro+1);
 		strcpy(ro, " $ROPT");
@@ -1299,7 +1313,7 @@ specview(				/* get proper view spec from vs */
 	if (cp == viewopts)		/* append any additional options */
 		vs++;		/* skip prefixed space if unneeded */
 	strcpy(cp, vs);
-#ifdef _WIN32
+#if defined(_WIN32) || defined(_WIN64)
 	if (strlen(viewopts) > 40) {
 		setenv("VIEW", viewopts);
 		return("$VIEW");
@@ -1367,14 +1381,14 @@ myprintview(			/* print out selected view */
 	VIEW	vwr;
 	char	buf[128];
 	char	*cp;
-#ifdef _WIN32
+#if defined(_WIN32) || defined(_WIN64)
 /* XXX Should we allow something like this for all platforms? */
 /* XXX Or is it still required at all? */
 again:
 #endif
 	if (vopts == NULL)
 		return(-1);
-#ifdef _WIN32
+#if defined(_WIN32) || defined(_WIN64)
 	if (vopts[0] == '$') {
 		vopts = getenv(vopts+1);
 		goto again;