--- ray/src/rt/rpict.c	1991/06/25 14:06:12	1.29
+++ ray/src/rt/rpict.c	1991/07/18 14:42:54	1.30
@@ -42,6 +42,7 @@ double  shadthresh = .05;		/* shadow threshold */
 double  shadcert = .5;			/* shadow certainty */
 int  directrelay = 0;			/* number of source relays */
 int  vspretest = 512;			/* virtual source pretest density */
+int  directinvis = 0;			/* sources invisible? */
 
 int  maxdepth = 6;			/* maximum recursion depth */
 double  minweight = 5e-3;		/* minimum ray weight */