--- ray/src/rt/normal.c 2003/06/17 21:32:46 2.43 +++ ray/src/rt/normal.c 2003/06/17 21:49:57 2.44 @@ -1,5 +1,5 @@ #ifndef lint -static const char RCSid[] = "$Id: normal.c,v 2.43 2003/06/17 21:32:46 greg Exp $"; +static const char RCSid[] = "$Id: normal.c,v 2.44 2003/06/17 21:49:57 greg Exp $"; #endif /* * normal.c - shading function for normal materials. @@ -23,7 +23,7 @@ static const char RCSid[] = "$Id: normal.c,v 2.43 2003 #define MAXITER 10 /* maximum # specular ray attempts */ #endif /* estimate of Fresnel function */ -#define FRESNE(ci) (exp(-6.5*(ci)) - 0.00150343919) +#define FRESNE(ci) (exp(-5.85*(ci)) - 0.00287989916) static void gaussamp();