--- ray/src/cv/tmesh2rad.c	1994/06/22 12:35:58	2.8
+++ ray/src/cv/tmesh2rad.c	2003/02/22 02:07:23	2.10
@@ -1,9 +1,6 @@
-/* Copyright (c) 1994 Regents of the University of California */
-
 #ifndef lint
-static char SCCSid[] = "$SunId$ LBL";
+static const char	RCSid[] = "$Id: tmesh2rad.c,v 2.10 2003/02/22 02:07:23 greg Exp $";
 #endif
-
 /*
  * Convert a trianglular mesh into a Radiance description.
  *
@@ -211,7 +208,9 @@ register VERTEX	*v1, *v2, *v3;
 		if (comp_baryc(&bvecs, v1->pos, v2->pos, v3->pos) < 0)
 			return;
 					/* put out texture (if any) */
-	if (v1->flags & v2->flags & v3->flags & V_HASNORM) {
+	if (v1->flags & v2->flags & v3->flags & V_HASNORM &&
+			!flat_tri(v1->pos, v2->pos, v3->pos,
+					v1->nor, v2->nor, v3->nor)) {
 		printf("\n%s texfunc %s\n", mod, TEXNAME);
 		mod = TEXNAME;
 		printf("4 dx dy dz %s\n", TCALNAME);