--- ray/src/rt/ambient.c	1991/08/29 11:13:14	1.17
+++ ray/src/rt/ambient.c	1992/01/15 10:36:42	2.2
@@ -186,13 +186,13 @@ double  s;
 		for (j = 0; j < 3; j++)
 			d += (r->rop[j] - av->pos[j]) *
 					(av->dir[j] + r->ron[j]);
-		if (d*0.5 < -minarad*ambacc)
+		if (d*0.5 < -minarad*ambacc-.001)
 			continue;
 		/*
 		 *  Jittering final test reduces image artifacts.
 		 */
 		wt = sqrt(e1) + sqrt(e2);
-		wt *= .9 + .2*frandom();
+		wt *= .9 + .2*urand(9015+samplendx);
 		if (wt > ambacc)
 			continue;
 		if (wt <= 1e-3)