--- ray/src/hd/rhd_odraw.h	1998/12/18 11:55:19	3.1
+++ ray/src/hd/rhd_odraw.h	1998/12/23 17:42:24	3.5
@@ -17,6 +17,7 @@
 #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 */
 	struct ODblock {
@@ -24,8 +25,10 @@ extern struct ODview {
 		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 +114,13 @@ 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 +128,11 @@ 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.
 
  **********************************************************************/