--- ray/src/hd/holo.h	1998/11/09 17:10:53	3.17
+++ ray/src/hd/holo.h	2003/02/22 02:07:24	3.20
@@ -1,7 +1,4 @@
-/* Copyright (c) 1998 Silicon Graphics, Inc. */
-
-/* SCCSid "$SunId$ SGI" */
-
+/* RCSid: $Id: holo.h,v 3.20 2003/02/22 02:07:24 greg Exp $ */
 /*
  * Header file for holodeck programs
  *
@@ -75,7 +72,6 @@ typedef struct holo {
 	short	dirty;		/* number of dirty segments */
 	double	tlin;		/* linear range for depth encoding */
 	FVECT	wg[3];		/* wall grid vectors (derived) */
-	double	wo[6];		/* wall grid offsets (derived) */
 	int	wi[6];		/* wall super-indices (derived) */
 	char	*priv;		/* pointer to private client data */
 	BEAM	**bl;		/* beam pointers (memory cache) */
@@ -105,6 +101,13 @@ extern double	hdray(), hdinter();
 extern unsigned	hdcode();
 extern int	hdfilord();
 
+#define FF_NEVER	0		/* never free fragments */
+#define FF_WRITE	01		/* free fragment on write */
+#define FF_ALLOC	02		/* free fragment on ray alloc */
+#define FF_READ		04		/* free fragment on read */
+#define FF_KILL		010		/* free fragment on beam kill */
+
+extern int	hdfragflags;		/* tells when to free fragments */
 extern unsigned	hdcachesize;		/* target cache size (bytes) */
 extern unsigned long	hdclock;	/* holodeck system clock */
 extern HOLO	*hdlist[HDMAX+1];	/* holodeck pointers (NULL term.) */