diff options
| -rw-r--r-- | src/photon.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/photon.h b/src/photon.h index 6cf3367..fb29ffe 100644 --- a/src/photon.h +++ b/src/photon.h @@ -52,7 +52,7 @@ enum {BREAK, CONTINUE, PASS}; // return value from propagate_to_boundary __device__ float get_theta(const float3 &a, const float3 &b) { - return acosf(fmaxf(0.0f,fminf(1.0f,dot(a,b)))); + return acosf(fmaxf(-1.0f,fminf(1.0f,dot(a,b)))); } __device__ void fill_state(State &s, Photon &p) |