--- ray/src/rt/normal.c 2003/03/12 17:26:58 2.42 +++ ray/src/rt/normal.c 2003/06/17 21:32:46 2.43 @@ -1,5 +1,5 @@ #ifndef lint -static const char RCSid[] = "$Id: normal.c,v 2.42 2003/03/12 17:26:58 greg Exp $"; +static const char RCSid[] = "$Id: normal.c,v 2.43 2003/06/17 21:32:46 greg Exp $"; #endif /* * normal.c - shading function for normal materials. @@ -23,7 +23,7 @@ static const char RCSid[] = "$Id: normal.c,v 2.42 2003 #define MAXITER 10 /* maximum # specular ray attempts */ #endif /* estimate of Fresnel function */ -#define FRESNE(ci) (exp(-6.0*(ci)) - 0.00247875217) +#define FRESNE(ci) (exp(-6.5*(ci)) - 0.00150343919) static void gaussamp();