--- ray/src/util/glareval.c	1991/04/05 14:41:55	1.10
+++ ray/src/util/glareval.c	1991/04/12 10:28:34	1.12
@@ -20,7 +20,7 @@ static char SCCSid[] = "$SunId$ LBL";
 #define vfork		fork
 #endif
 
-#define MAXSBUF		1023980	/* maximum total size of scanline buffer */
+#define MAXSBUF		524268	/* maximum total size of scanline buffer */
 #define HSIZE		317	/* size of scanline hash table */
 #define NRETIRE		16	/* number of scanlines to retire at once */
 
@@ -75,6 +75,12 @@ int	y;
 			if (sl->y == y) {		/* reclaim */
 				sl->next = hashtab[hi];
 				hashtab[hi] = sl;
+#ifdef DEBUG
+				if (verbose)
+					fprintf(stderr,
+						"%s: scanline %d reclaimed\n",
+							progname, y);
+#endif
 			}
 			return(sl);
 		}
@@ -171,14 +177,15 @@ FVECT	vd;
 
 
 double
-getviewpix(vh, vv)		/* compute single view pixel */
+getviewpix(vh, vv, se)		/* compute single view pixel */
 int	vh, vv;
+SPANERR	*se;
 {
 	FVECT	dir;
 	float	rt_buf[6];
 	double	res;
 
-	if (compdir(dir, vh, vv) < 0)
+	if (compdir(dir, vh, vv, se) < 0)
 		return(-1.0);
 	npixinvw++;
 	if ((res = pict_val(dir)) >= 0.0)
@@ -205,6 +212,7 @@ float	*vb;
 	float	rt_buf[6*MAXPIX];	/* rtrace send/receive buffer */
 	register int	n;		/* number of pixels in buffer */
 	short	buf_vh[MAXPIX];		/* pixel positions */
+	SPANERR	sperr;
 	FVECT	dir;
 	register int	vh;
 
@@ -213,9 +221,10 @@ float	*vb;
 		fprintf(stderr, "%s: computing view span at %d...\n",
 				progname, vv);
 #endif
+	setspanerr(&sperr, vv);
 	n = 0;
 	for (vh = -hsize; vh <= hsize; vh++) {
-		if (compdir(dir, vh, vv) < 0) {	/* off viewable region */
+		if (compdir(dir, vh, vv, &sperr) < 0) {	/* not in view */
 			vb[vh+hsize] = -1.0;
 			continue;
 		}
@@ -289,8 +298,6 @@ char	*s;
 open_pict(fn)			/* open picture file */
 char	*fn;
 {
-	register int	i;
-
 	if ((pictfp = fopen(fn, "r")) == NULL) {
 		fprintf("%s: cannot open\n", fn);
 		exit(1);
@@ -307,8 +314,6 @@ char	*fn;
 
 close_pict()			/* done with picture */
 {
-	register int	i;
-
 	if (pictfp == NULL)
 		return;
 	fclose(pictfp);