--- ray/src/hd/rhd_odraw.h	1998/12/18 11:55:19	3.1
+++ ray/src/hd/rhd_odraw.h	2003/02/22 02:07:24	3.7
@@ -1,7 +1,4 @@
-/* Copyright (c) 1998 Silicon Graphics, Inc. */
-
-/* SCCSid "$SunId$ SGI" */
-
+/* RCSid: $Id: rhd_odraw.h,v 3.7 2003/02/22 02:07:24 greg Exp $ */
 /*
  * Header for OpenGL cone drawing routines with depth buffer checks.
  */
@@ -17,15 +14,19 @@
 #endif
 
 extern struct ODview {
+	int	sfirst, snext;	/* first sample and first in next view */
 	short	hhi, vhi;	/* screen image resolution */
 	short	hlow, vlow;	/* block resolution */
+	int	n2redraw;	/* approx. number of samples needing redraw */
 	struct ODblock {
 		short	nsamp;		/* number of samples in block */
 		short	nused;		/* number actually allocated */
 		int	first;		/* first sample in this block */
 		int	free;		/* index for block free list */
+		float	pthresh;	/* proximity threshold */
 	}	*bmap;		/* low resolution image map */
 	int4	*emap;		/* low resolution edge presence map */
+	int4	*pmap;		/* high resolution presence map */
 	GLfloat	*dmap;		/* high resolution depth map */
 } *odView;		/* our view list */
 
@@ -111,6 +112,13 @@ needs to be redrawn in the next call to odUpdate().
 
 
 void
+odRedrawAll()			: everything needs to be redrawn
+
+Redraw everything in all views on the next call to odUpdate().
+Unless odRemap() is called, no new tone mapping will be done.
+
+
+void
 odUpdate(vn)			: update the current view
 int	vn;			: view number
 
@@ -118,9 +126,11 @@ Draw all new and undrawn sample values since last call
 
 
 void
-odRemap()			: recompute tone mapping
+odRemap(newhist)		: recompute tone mapping
+int	newhist;		: flag whether to clear history
 
 Recompute the tone mapping for all the samples in all the views
-and redraw them on the next call(s) to odUpdate().
+and redraw them on the next call(s) to odUpdate().  If newhist
+is non-zero, then clear the previous sample history.
 
  **********************************************************************/