--- ray/src/rt/glass.c	1992/10/14 12:27:47	2.4
+++ ray/src/rt/glass.c	1994/01/13 09:45:10	2.7
@@ -27,11 +27,11 @@ static char SCCSid[] = "$SunId$ LBL";
  *	3 red grn blu
  *
  *  The color is used for the transmission at normal incidence.
- *  To compute transmission (tn) from transmissivity (Tn) use:
+ *  To compute transmissivity (tn) from transmittance (Tn) use:
  *
  *	tn = (sqrt(.8402528435+.0072522239*Tn*Tn)-.9166530661)/.0036261119/Tn
  *
- *  The transmission of standard 88% transmissivity glass is 0.96.
+ *  The transmissivity of standard 88% transmittance glass is 0.96.
  *  A refractive index other than the default can be used by giving
  *  it as the fourth real argument.  The above formula no longer applies.
  *
@@ -68,6 +68,7 @@ register RAY  *r;
 	if (r->rod < 0.0)			/* reorient if necessary */
 		flipsurface(r);
 	transtest = 0;
+	transdist = r->rot;
 						/* get modifiers */
 	raytexture(r, m->omod);
 	pdot = raynormal(pnorm, r);
@@ -113,7 +114,7 @@ register RAY  *r;
 	}
 
 	if (r->crtype & SHADOW)			/* skip reflected ray */
-		return;
+		return(1);
 						/* compute reflectance */
 	for (i = 0; i < 3; i++) {
 		d = colval(mcolor, i);
@@ -131,4 +132,5 @@ register RAY  *r;
 	}
 	if (transtest > bright(r->rcol))
 		r->rt = transdist;
+	return(1);
 }