OpenShadingLanguage 1.00
# Compiled by oslc 1.5.10
shader node_fresnel
param	float	IOR	1.45 		 %read{1,1} %write{2147483647,-1}
param	normal	Normal	0 0 0 		 %read{6,6} %write{0,0}
oparam	float	Fac	0 		 %read{2147483647,-1} %write{32,32}
global	vector	I	 %read{6,6} %write{2147483647,-1}
global	normal	N	 %read{0,0} %write{2147483647,-1}
local	float	___626_c	 %read{11,23} %write{8,8}
local	float	___626_g	 %read{13,22} %write{12,15}
local	float	___626_result	 %read{32,32} %write{30,31}
local	float	___627_A	 %read{26,27} %write{18,18}
local	float	___627_B	 %read{28,28} %write{25,25}
local	float	f	 %read{4,5} %write{1,1}
local	float	eta	 %read{9,9} %write{4,5}
local	float	cosi	 %read{8,8} %write{6,6}
const	float	$const1	9.9999997e-06		 %read{1,1} %write{2147483647,-1}
temp	int	$tmp1	 %read{3,3} %write{2,2}
const	float	$const2	1		 %read{4,31} %write{2147483647,-1}
const	string	$const3	"fresnel_dielectric_cos"		 %read{7,7} %write{2147483647,-1}
temp	float	$tmp2	 %read{10,10} %write{9,9}
temp	float	$tmp3	 %read{12,12} %write{10,10}
temp	float	$tmp4	 %read{12,12} %write{11,11}
const	int	$const5	0		 %read{13,13} %write{2147483647,-1}
temp	int	$tmp5	 %read{14,14} %write{13,13}
temp	float	$tmp6	 %read{18,18} %write{16,16}
temp	float	$tmp7	 %read{18,18} %write{17,17}
temp	float	$tmp8	 %read{20,20} %write{19,19}
temp	float	$tmp9	 %read{21,21} %write{20,20}
temp	float	$tmp10	 %read{25,25} %write{21,21}
temp	float	$tmp11	 %read{23,23} %write{22,22}
temp	float	$tmp12	 %read{24,24} %write{23,23}
temp	float	$tmp13	 %read{25,25} %write{24,24}
const	float	$const6	0.5		 %read{26,26} %write{2147483647,-1}
temp	float	$tmp14	 %read{27,27} %write{26,26}
temp	float	$tmp15	 %read{30,30} %write{27,27}
temp	float	$tmp16	 %read{29,29} %write{28,28}
temp	float	$tmp17	 %read{30,30} %write{29,29}
code Normal
# intern/cycles/kernel/shaders/node_fresnel.osl:22
# 	normal Normal = N,
	assign		Normal N 	%filename{"intern/cycles/kernel/shaders/node_fresnel.osl"} %line{22} %argrw{"wr"}
code ___main___
# intern/cycles/kernel/shaders/node_fresnel.osl:25
# 	float f = max(IOR, 1e-5);
	max		f IOR $const1 	%filename{"intern/cycles/kernel/shaders/node_fresnel.osl"} %line{25} %argrw{"wrr"}
# intern/cycles/kernel/shaders/node_fresnel.osl:26
# 	float eta = backfacing() ? 1.0 / f : f;
	backfacing	$tmp1 	%line{26} %argrw{"w"}
	if		$tmp1 5 6 	%argrw{"r"}
	div		eta $const2 f 	%argrw{"wrr"}
	assign		eta f 	%argrw{"wr"}
# intern/cycles/kernel/shaders/node_fresnel.osl:27
# 	float cosi = dot(I, Normal);
	dot		cosi I Normal 	%line{27} %argrw{"wrr"}
# intern/cycles/kernel/shaders/node_fresnel.osl:28
# 	Fac = fresnel_dielectric_cos(cosi, eta);
	functioncall	$const3 33 	%line{28} %argrw{"r"}
# intern/cycles/kernel/shaders/node_fresnel.h:21
# 	float c = fabs(cosi);
	fabs		___626_c cosi 	%filename{"intern/cycles/kernel/shaders/node_fresnel.h"} %line{21} %argrw{"wr"}
# intern/cycles/kernel/shaders/node_fresnel.h:22
# 	float g = eta * eta - 1 + c * c;
	mul		$tmp2 eta eta 	%line{22} %argrw{"wrr"}
	sub		$tmp3 $tmp2 $const2 	%argrw{"wrr"}
	mul		$tmp4 ___626_c ___626_c 	%argrw{"wrr"}
	add		___626_g $tmp3 $tmp4 	%argrw{"wrr"}
# intern/cycles/kernel/shaders/node_fresnel.h:25
# 	if (g > 0) {
	gt		$tmp5 ___626_g $const5 	%line{25} %argrw{"wrr"}
	if		$tmp5 31 32 	%argrw{"r"}
# intern/cycles/kernel/shaders/node_fresnel.h:26
# 		g = sqrt(g);
	sqrt		___626_g ___626_g 	%line{26} %argrw{"wr"}
# intern/cycles/kernel/shaders/node_fresnel.h:27
# 		float A = (g - c) / (g + c);
	sub		$tmp6 ___626_g ___626_c 	%line{27} %argrw{"wrr"}
	add		$tmp7 ___626_g ___626_c 	%argrw{"wrr"}
	div		___627_A $tmp6 $tmp7 	%argrw{"wrr"}
# intern/cycles/kernel/shaders/node_fresnel.h:28
# 		float B = (c * (g + c) - 1) / (c * (g - c) + 1);
	add		$tmp8 ___626_g ___626_c 	%line{28} %argrw{"wrr"}
	mul		$tmp9 ___626_c $tmp8 	%argrw{"wrr"}
	sub		$tmp10 $tmp9 $const2 	%argrw{"wrr"}
	sub		$tmp11 ___626_g ___626_c 	%argrw{"wrr"}
	mul		$tmp12 ___626_c $tmp11 	%argrw{"wrr"}
	add		$tmp13 $tmp12 $const2 	%argrw{"wrr"}
	div		___627_B $tmp10 $tmp13 	%argrw{"wrr"}
# intern/cycles/kernel/shaders/node_fresnel.h:29
# 		result = 0.5 * A * A * (1 + B * B);
	mul		$tmp14 $const6 ___627_A 	%line{29} %argrw{"wrr"}
	mul		$tmp15 $tmp14 ___627_A 	%argrw{"wrr"}
	mul		$tmp16 ___627_B ___627_B 	%argrw{"wrr"}
	add		$tmp17 $const2 $tmp16 	%argrw{"wrr"}
	mul		___626_result $tmp15 $tmp17 	%argrw{"wrr"}
# intern/cycles/kernel/shaders/node_fresnel.h:32
# 		result = 1.0;  /* TIR (no refracted component) */
	assign		___626_result $const2 	%line{32} %argrw{"wr"}
# intern/cycles/kernel/shaders/node_fresnel.h:34
# 	return result;
	assign		Fac ___626_result 	%line{34} %argrw{"wr"}
	end
