--- ray/src/hd/rholo.c	1997/11/20 11:39:24	3.12
+++ ray/src/hd/rholo.c	1997/12/01 16:34:21	3.14
@@ -9,6 +9,7 @@ static char SCCSid[] = "$SunId$ SGI";
  */
 
 #include "rholo.h"
+#include "random.h"
 #include "paths.h"
 #include <signal.h>
 #include <sys/types.h>
@@ -61,6 +62,7 @@ char	*argv[];
 	int	force = 0;
 						/* mark start time */
 	starttime = time(NULL);
+	initurand(10240);			/* initialize urand */
 	progname = argv[0];			/* get arguments */
 	for (i = 1; i < argc && argv[i][0] == '-'; i++)
 		switch (argv[i][1]) {
@@ -369,6 +371,10 @@ register HDGRID	*gp;
 		vval(OBSTRUCTIONS) = "T";
 		vdef(OBSTRUCTIONS)++;
 	}
+	if (!vdef(VDIST)) {
+		vval(VDIST) = "F";
+		vdef(VDIST)++;
+	}
 	if (!vdef(OCCUPANCY)) {
 		vval(OCCUPANCY) = "U";
 		vdef(OCCUPANCY)++;
@@ -463,7 +469,7 @@ loadholo()			/* start loading a holodeck from fname */
 done_packets(pl)		/* handle finished packets */
 PACKET	*pl;
 {
-	static int	nunflushed = 0;
+	static int	n2flush = 0;
 	register PACKET	*p;
 
 	while (pl != NULL) {
@@ -474,8 +480,8 @@ PACKET	*pl;
 				p->nr*sizeof(RAYVAL));
 			if (outdev != NULL)	/* display it */
 				disp_packet((PACKHEAD *)p);
-			else
-				nunflushed += p->nr;
+			if (hdcachesize <= 0)	/* manual flushing */
+				n2flush += p->nr;
 			nraysdone += p->nr;
 			npacksdone++;
 		}
@@ -483,9 +489,9 @@ PACKET	*pl;
 		p->next = freepacks;
 		freepacks = p;
 	}
-	if (nunflushed >= 256*RPACKSIZ) {
+	if (n2flush > 512*RPACKSIZ*ncprocs) {
 		hdflush(NULL);			/* flush holodeck buffers */
-		nunflushed = 0;
+		n2flush = 0;
 	}
 }