--- ray/src/hd/rhdriver.h	1998/12/10 10:45:55	3.17
+++ ray/src/hd/rhdriver.h	1999/03/04 10:29:23	3.20
@@ -1,4 +1,4 @@
-/* Copyright (c) 1998 Silicon Graphics, Inc. */
+/* Copyright (c) 1999 Silicon Graphics, Inc. */
 
 /* SCCSid "$SunId$ SGI" */
 
@@ -13,6 +13,7 @@ extern struct driver {
 	VIEW	v;		/* base view parameters */
 	int	hres, vres;	/* base view resolution */
 	int	ifd;		/* input file descriptor (for select) */
+	int	firstuse;	/* non-zero if driver can't recycle samples */
 	int	inpready;	/* number of unprocessed input events */
 } odev;			/* our open device */
 
@@ -132,6 +133,27 @@ views.  The zeroeth auxiliary view is the base view it
 
 
 void
+dev_section(gf, pf)	: add geometry and ports for rendering
+char	*gf;		: geometry file name
+char	*pf;		: portal file name(s)
+
+Add the given geometry file to the list of geometry to render for
+intermediate views if direct geometry rendering is available.  The
+second argument gives the name(s) of any portal geometry files
+associated with this section.  Multiple portal file names are separated
+by spaces.  A single octree file will be given for the geometry, ending
+in the ".oct" suffix.  Portal files will be given as zero or more
+Radiance scene description file names.  If no portals are given for
+this section, the string may be NULL.  The character strings are
+guaranteed to be static (or permanently allocated) such that they may
+be safely stored as a pointer.  The same pointers or file lists may be
+(and often are) given repeatedly.  If a given geometry file does not
+exist, the call should be silently ignored.  If gf is NULL, then the
+last section has been given, and the display can be updated with the
+new information.
+
+
+void
 dev_close()		: close the display
 
 Close the display device and free up resources in preparation for exit.
@@ -142,3 +164,5 @@ Set odev.v.type=0 and odev.hres=odev.vres=0 when done.
 
 
 extern VIEW	*dev_auxview();
+
+extern int2	*beam_view();