--- ray/src/hd/rhdriver.h	1998/05/14 13:06:32	3.13
+++ ray/src/hd/rhdriver.h	1998/08/19 17:43:08	3.16
@@ -1,4 +1,4 @@
-/* Copyright (c) 1997 Silicon Graphics, Inc. */
+/* Copyright (c) 1998 Silicon Graphics, Inc. */
 
 /* SCCSid "$SunId$ SGI" */
 
@@ -13,10 +13,13 @@ extern struct driver {
 	VIEW	v;		/* base view parameters */
 	int	hres, vres;	/* base view resolution */
 	int	ifd;		/* input file descriptor (for select) */
+	int	inpready;	/* number of unprocessed input events */
 } odev;			/* our open device */
 
 extern int	imm_mode;	/* bundles are being delivered immediately */
 
+extern double	eyesepdist;	/* world eye separation distance */
+
 				/* user commands */
 #define	DC_SETVIEW	0		/* set the base view */
 #define	DC_GETVIEW	1		/* print the current base view */
@@ -75,20 +78,21 @@ the screen is optional.
 
 
 void
-dev_value(c, p, v)	: register new point of light
+dev_value(c, d, p)	: register new point of light
 COLR	c;		: pixel color (RGBE)
+FVECT	d;		: ray direction vector
 FVECT	p;		: world intersection point
-FVECT	v;		: ray direction vector
 
 Add the given color point to the display output queue.  If imm_mode is
-non-zero, then values are being sent in rapid succession.
+non-zero, then values are being sent in rapid succession.  If p is NULL,
+then the point is at infinity.
 
 
 int
 dev_flush()		: flush the output and prepare for select call
 
 Updates display, taking any pending action required before select(2) call.
-Returns non-zero if there is device input available.
+Returns non-zero if there is device input available, setting odev.inpready.
 
 
 int
@@ -97,7 +101,18 @@ dev_input()		: process pending display input
 Called when odev struct file descriptor shows input is ready.
 Returns flags indicating actions to take in the control process.
 If the DC_VIEW or DC_RESIZE flag is returned, the odev
-structure must be updated beforehand.
+structure must be updated beforehand.  No events will be
+ready when this function returns, and odev.inpready will be 0.
+
+void
+dev_auxcom(cmd, args)	: process auxiliary command
+char	*cmd, *args;	: command name and argument string
+
+Execute an auxiliary command (not one of those listed at the head of
+this file).  The cmd argument points to the command name itself, and
+the args argument points to a string with the rest of the input line.
+If the command isn't known or there ARE no auxiliary commands, print
+an appropriate COMMAND error message and return.
 
 
 VIEW *