--- ray/src/px/pinterp.c	1995/09/16 10:30:52	2.26
+++ ray/src/px/pinterp.c	1998/10/27 09:08:26	2.31
@@ -39,7 +39,7 @@ static char SCCSid[] = "$SunId$ LBL";
 
 #define PACKSIZ		256		/* max. calculation packet size */
 
-#define RTCOM		"rtrace -h- -ovl -fff "
+#define RTCOM		"rtrace -h- -ovl -fff -ld- -i- -I- "
 
 #define ABS(x)		((x)>0?(x):-(x))
 
@@ -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 */
@@ -251,7 +252,7 @@ char	*argv[];
 				rexpadj = pow(2.0, (double)expadj);
 		}
 						/* set view */
-	if (nextview(doblur ? stdin : NULL) == EOF) {
+	if (nextview(doblur ? stdin : (FILE *)NULL) == EOF) {
 		fprintf(stderr, "%s: no view on standard input!\n",
 				progname);
 		exit(1);
@@ -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();
@@ -326,16 +328,21 @@ userr:
 }
 
 
+int
 headline(s)				/* process header string */
 char	*s;
 {
 	char	fmt[32];
 
 	if (isheadid(s))
-		return;
+		return(0);
 	if (formatval(fmt, s)) {
-		wrongformat = strcmp(fmt, COLRFMT);
-		return;
+		if (globmatch(ourfmt, fmt)) {
+			wrongformat = 0;
+			strcpy(ourfmt, fmt);
+		} else
+			wrongformat = 1;
+		return(0);
 	}
 	if (nvavg < 2) {
 		putc('\t', stdout);
@@ -343,10 +350,11 @@ char	*s;
 	}
 	if (isexpos(s)) {
 		theirexp *= exposval(s);
-		return;
+		return(0);
 	}
 	if (isview(s) && sscanview(&theirview, s) > 0)
 		gotview++;
+	return(0);
 }
 
 
@@ -1163,9 +1171,9 @@ clearqueue()				/* process queue */
 	}
 					/* mark end and get results */
 	bzero((char *)fbp, 6*sizeof(float));
-	if (process(PDesc, fbuf, fbuf, 4*sizeof(float)*queuesiz,
+	if (process(PDesc, fbuf, fbuf, 4*sizeof(float)*(queuesiz+1),
 			6*sizeof(float)*(queuesiz+1)) !=
-			4*sizeof(float)*queuesiz) {
+			4*sizeof(float)*(queuesiz+1)) {
 		fprintf(stderr, "%s: error reading from rtrace process\n",
 				progname);
 		exit(1);