diff options
Diffstat (limited to 'intern/cycles/kernel/osl/nodes/node_fresnel.osl')
| -rw-r--r-- | intern/cycles/kernel/osl/nodes/node_fresnel.osl | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/intern/cycles/kernel/osl/nodes/node_fresnel.osl b/intern/cycles/kernel/osl/nodes/node_fresnel.osl index ddc86db130f..3af4448b43f 100644 --- a/intern/cycles/kernel/osl/nodes/node_fresnel.osl +++ b/intern/cycles/kernel/osl/nodes/node_fresnel.osl @@ -20,11 +20,12 @@ #include "node_fresnel.h" shader node_fresnel( - float Fresnel = 0.3, + float IOR = 1.45, normal Normal = N, output float Fac = 0.0) { - float f = max(1.0 - Fresnel, 0.00001); - Fac = fresnel_dielectric(I, Normal, backfacing()? f: 1.0/f); + float f = max(IOR, 1.0 + 1e-5); + float eta = backfacing()? 1.0/f: f; + Fac = fresnel_dielectric(I, Normal, eta); } |