--- ray/src/rt/m_mirror.c	2014/05/10 17:43:01	2.16
+++ ray/src/rt/m_mirror.c	2019/04/19 19:01:32	2.21
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: m_mirror.c,v 2.16 2014/05/10 17:43:01 greg Exp $";
+static const char	RCSid[] = "$Id: m_mirror.c,v 2.21 2019/04/19 19:01:32 greg Exp $";
 #endif
 /*
  * Routines for mirror material supporting virtual light sources
@@ -44,8 +44,9 @@ m_mirror(			/* shade mirrored ray */
 		objerror(m, USER, "bad number of arguments");
 					/* check for substitute material */
 					/* but avoid double-counting */
-	if (m->oargs.nsargs > 0 && !(r->crtype & (AMBIENT|SPECULAR)) &&
-			(r->rsrc < 0 || source[r->rsrc].so != r->ro)) {
+	if ( m->oargs.nsargs > 0 &&
+			(r->rsrc < 0 || source[r->rsrc].so != r->ro) &&
+			!(r->crtype & (AMBIENT|SPECULAR) && r->rod > 0.) ) {
 		if (!strcmp(m->oargs.sarg[0], VOIDID)) {
 			raytrans(r);
 			return(1);
@@ -97,9 +98,11 @@ m_mirror(			/* shade mirrored ray */
 	checknorm(nr.rdir);
 	rayvalue(&nr);
 	multcolor(nr.rcol, nr.rcoef);
+	copycolor(r->mcol, nr.rcol);
 	addcolor(r->rcol, nr.rcol);
+	r->rmt = r->rot;
 	if (rpure && r->ro != NULL && isflat(r->ro->otype))
-		r->rt = r->rot + nr.rt;
+		r->rmt += r->rot + raydistance(&nr);
 	return(1);
 }