--- ray/src/rt/rcontrib.c	2012/06/27 15:32:58	2.14
+++ ray/src/rt/rcontrib.c	2012/08/14 22:25:12	2.16
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char RCSid[] = "$Id: rcontrib.c,v 2.14 2012/06/27 15:32:58 greg Exp $";
+static const char RCSid[] = "$Id: rcontrib.c,v 2.16 2012/08/14 22:25:12 greg Exp $";
 #endif
 /*
  * Accumulate ray contributions for a set of materials
@@ -255,8 +255,10 @@ eval_irrad(FVECT org, FVECT dir)
 	thisray.rdir[2] = -dir[2];
 	thisray.rmax = 0.0;
 	rayorigin(&thisray, PRIMARY, NULL, NULL);
-	thisray.rot = 1e-5;		/* pretend we hit surface */
+					/* pretend we hit surface */
+	thisray.rt = thisray.rot = 1e-5;
 	thisray.rod = 1.0;
+	VCOPY(thisray.ron, dir);
 	VSUM(thisray.rop, org, dir, 1e-4);
 	samplendx++;			/* compute result */
 	(*ofun[Lamb.otype].funp)(&Lamb, &thisray);