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-rw-r--r--src/photon.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/photon.h b/src/photon.h
index 69ecd34..11bcfc1 100644
--- a/src/photon.h
+++ b/src/photon.h
@@ -25,6 +25,8 @@ struct Photon
struct State
{
+ bool inside_to_outside;
+
float3 surface_normal;
float refractive_index1, refractive_index2;
@@ -78,6 +80,8 @@ __device__ int fill_state(State &s, Photon &p)
// outside to inside
material1 = materials[outer_material_index];
material2 = materials[inner_material_index];
+
+ s.inside_to_outside = false;
}
else
{
@@ -85,6 +89,8 @@ __device__ int fill_state(State &s, Photon &p)
material1 = materials[inner_material_index];
material2 = materials[outer_material_index];
s.surface_normal = -s.surface_normal;
+
+ s.inside_to_outside = true;
}
s.refractive_index1 = interp_property(p.wavelength, material1.refractive_index);