Don't draw a random time delta in the daq kernel unless it is necessary.

1 files changed, 4 insertions, 3 deletions

diff --git a/src/daq.cu b/src/daq.cu
index 07e2d5e..2b5f9b4 100644
--- a/src/daq.cu
+++ b/src/daq.cu
@@ -48,12 +48,13 @@ __global__ void run_daq(curandState *s, unsigned int detection_state,
 		{
 			int solid_id = solid_map[triangle_id];
 			int history = photon_histories[id];
-			float time = photon_times[id] + curand_normal(&rng) * time_rms;
-			unsigned int time_int = float_to_sortable_int(time);
 
 			if (solid_id < nsolids && (history & detection_state)) 
 			{
-			    atomicMin(earliest_time_int + solid_id, time_int);
+			  float time = photon_times[id] + curand_normal(&rng) * time_rms;
+			  unsigned int time_int = float_to_sortable_int(time);
+			  
+			  atomicMin(earliest_time_int + solid_id, time_int);
 			}
 
 		}