--- ray/src/common/rglfile.c	1998/06/09 11:18:35	3.1
+++ ray/src/common/rglfile.c	2003/02/25 02:47:22	3.5
@@ -1,29 +1,24 @@
-/* Copyright (c) 1998 Silicon Graphics, Inc. */
-
 #ifndef lint
-static char SCCSid[] = "$SunId$ SGI";
+static const char	RCSid[] = "$Id: rglfile.c,v 3.5 2003/02/25 02:47:22 greg Exp $";
 #endif
-
 /*
  * Load Radiance object(s) and create OpenGL display lists
  */
 
+#include "copyright.h"
+
 #include "radogl.h"
 
 #ifndef NLIST2ALLOC
 #define NLIST2ALLOC	16		/* batch of display lists to get */
 #endif
 
-extern int	o_sphere(), o_face(), o_cone(), o_ring(),
-		o_source(), o_instance();
-
-extern int	m_normal(), m_glass(), m_aniso(), m_brdf(), m_brdf2(),
-		m_light(), m_prism(), m_mirror();
-
 FUN  ofun[NUMOTYPE] = INIT_OTYPE;
 
+static int	nextlist, nlistleft = 0;
 
-static
+
+static void
 initotypes()			/* initialize ofun array */
 {
 	if (ofun[OBJ_SPHERE].funp == o_sphere)
@@ -69,16 +64,17 @@ initotypes()			/* initialize ofun array */
 int
 newglist()			/* allocate an OGL list id */
 {
-	static int	nextlist, nleft = 0;
-
-	if (!nleft--) {
+	if (!nlistleft--) {
 		nextlist = glGenLists(NLIST2ALLOC);
-		nleft = NLIST2ALLOC-1;
+		if (!nextlist)
+			error(SYSTEM, "no list space left in newglist");
+		nlistleft = NLIST2ALLOC-1;
 	}
 	return(nextlist++);
 }
 
 
+void
 rgl_checkerr(where)		/* check for GL or GLU error */
 char	*where;
 {
@@ -93,9 +89,10 @@ char	*where;
 
 
 int
-rgl_filelist(ic, inp)		/* load scene files into display list */
+rgl_filelist(ic, inp, nl)	/* load scene files into display list */
 int	ic;
 char	**inp;
+int	*nl;			/* returned number of lists (optional) */
 {
 	int	listid;
 
@@ -110,15 +107,18 @@ char	**inp;
 	glEndList();		/* end of top display list */
 	lightdefs();		/* define light sources */
 	loadoctrees();		/* load octrees (sublists) for instances */
+	if (nl != NULL)		/* return total number of lists allocated */
+		*nl = nextlist - listid;
 	return(listid);		/* all done -- return list id */
 }
 
 
 int
-rgl_octlist(fname, cent, radp)	/* load octree objects into display list */
+rgl_octlist(fname, cent, radp, nl)	/* load scen into display list */
 char	*fname;
 FVECT	cent;			/* returned octree center (optional) */
-double	*radp;			/* returned octree size (optional) */
+FLOAT	*radp;			/* returned octree size (optional) */
+int	*nl;			/* returned number of lists (optional) */
 {
 	double	r;
 	int	listid;
@@ -137,10 +137,13 @@ double	*radp;			/* returned octree size (optional) */
 	glEndList();		/* close top list */
 	lightdefs();		/* define light sources */
 	loadoctrees();		/* load referenced octrees into sublists */
+	if (nl != NULL)		/* return total number of lists allocated */
+		*nl = nextlist - listid;
 	return(listid);
 }
 
 
+void
 rgl_load(inpspec)		/* convert scene description into OGL calls */
 char	*inpspec;
 {
@@ -183,6 +186,7 @@ char	*inpspec;
 }
 
 
+void
 rgl_object(name, fp)			/* read the next object */
 char  *name;
 FILE  *fp;