--- ray/src/hd/rholo4.c	1998/10/06 18:09:49	3.20
+++ ray/src/hd/rholo4.c	1998/11/24 17:05:36	3.22
@@ -16,6 +16,10 @@ static char SCCSid[] = "$SunId$ SGI";
 #define HDSUF	".hdi"
 #endif
 
+#ifndef FNONBLK
+#define FNONBLK		O_NONBLOCK
+#endif
+
 static int	inp_flags;
 static int	dpd[3];
 static FILE	*dpout;
@@ -158,6 +162,11 @@ int	block;
 		if (msg.nbytes % sizeof(PACKHEAD))
 			error(INTERNAL, "bad DR_DELSET from display process");
 		bundle_set(BS_DEL, (PACKHEAD *)buf, msg.nbytes/sizeof(PACKHEAD));
+		break;
+	case DR_VIEWPOINT:	/* set target eye position */
+		if (msg.nbytes != sizeof(VIEWPOINT))
+			error(INTERNAL, "bad DR_VIEWPOINT from display process");
+		copystruct(&myeye, (VIEWPOINT *)buf);
 		break;
 	case DR_ATTEN:		/* block for priority request */
 		if (msg.nbytes)