--- ray/src/px/pinterp.c	1995/09/15 22:04:04	2.25
+++ ray/src/px/pinterp.c	1995/10/16 11:40:16	2.27
@@ -76,6 +76,7 @@ COLR	backcolr = BLKCOLR;		/* background color */
 COLOR	backcolor = BLKCOLOR;		/* background color (float) */
 double	backz = 0.0;			/* background z value */
 int	normdist = 1;			/* i/o normalized distance? */
+char	ourfmt[LPICFMT+1] = PICFMT;	/* original picture format */
 double	ourexp = -1;			/* original picture exposure */
 int	expadj = 0;			/* exposure adjustment (f-stops) */
 double	rexpadj = 1;			/* real exposure adjustment */
@@ -92,7 +93,7 @@ int	PDesc[3] = {-1,-1,-1};		/* rtrace process descript
 #define childpid	(PDesc[2])
 unsigned short	queue[PACKSIZ][2];	/* pending pixels */
 int	packsiz;			/* actual packet size */
-int	queuesiz;			/* number of pixels pending */
+int	queuesiz = 0;			/* number of pixels pending */
 
 extern double	movepixel();
 
@@ -308,7 +309,8 @@ char	*argv[];
 		ourexp = rexpadj;
 	if (ourexp < .995 | ourexp > 1.005)
 		fputexpos(ourexp, stdout);
-	fputformat(COLRFMT, stdout);
+	if (strcmp(ourfmt, PICFMT))		/* print format if known */
+		fputformat(ourfmt, stdout);
 	putc('\n', stdout);
 							/* write picture */
 	writepicture();
@@ -334,7 +336,11 @@ char	*s;
 	if (isheadid(s))
 		return;
 	if (formatval(fmt, s)) {
-		wrongformat = strcmp(fmt, COLRFMT);
+		if (globmatch(ourfmt, fmt)) {
+			wrongformat = 0;
+			strcpy(ourfmt, fmt);
+		} else
+			wrongformat = 1;
 		return;
 	}
 	if (nvavg < 2) {
@@ -924,6 +930,8 @@ int	(*fill)();
 		for (x = 0; x < hresolu; x++)
 			if (zscan(y)[x] <= 0)
 				(*fill)(x,y);
+	if (fill == rcalfill)
+		clearqueue();
 }
 
 
@@ -1178,7 +1186,7 @@ clearqueue()				/* process queue */
 		if (averaging) {
 			setcolor(sscan(queue[i][1])[queue[i][0]],
 					fbp[0], fbp[1], fbp[2]);
-			wscan(queue[i][1])[queue[i][0]] = MAXWT;
+			wscan(queue[i][1])[queue[i][0]] = 1;
 		} else
 			setcolr(pscan(queue[i][1])[queue[i][0]],
 					fbp[0], fbp[1], fbp[2]);