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-rw-r--r--src/photon.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/photon.h b/src/photon.h
index f471866..4203a50 100644
--- a/src/photon.h
+++ b/src/photon.h
@@ -44,7 +44,8 @@ enum
SURFACE_ABSORB = 0x1 << 3,
RAYLEIGH_SCATTER = 0x1 << 4,
REFLECT_DIFFUSE = 0x1 << 5,
- REFLECT_SPECULAR = 0x1 << 6
+ REFLECT_SPECULAR = 0x1 << 6,
+ NAN_ABORT = 0x1 << 31
}; // processes
enum {BREAK, CONTINUE, PASS}; // return value from propagate_to_boundary