From 55cec145d72baf58639aad7773e23e28c9ca8676 Mon Sep 17 00:00:00 2001
From: Anthony LaTorre <tlatorre9@gmail.com>
Date: Sat, 10 Sep 2011 20:40:05 -0400
Subject: store geometry struct in shared memory. this increases photon
 propagation speed from 3.3M -> 3.45!.

---
 src/mesh.h | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'src/mesh.h')

diff --git a/src/mesh.h b/src/mesh.h
index 734ab92..73dff71 100644
--- a/src/mesh.h
+++ b/src/mesh.h
@@ -122,11 +122,20 @@ __global__ void
 distance_to_mesh(int nthreads, float3 *_origin, float3 *_direction,
 		 Geometry *g, float *_distance)
 {
+    __shared__ Geometry sg;
+
+    if (threadIdx.x == 0)
+	sg = *g;
+
+    __syncthreads();
+
     int id = blockIdx.x*blockDim.x + threadIdx.x;
 
     if (id >= nthreads)
 	return;
 
+    g = &sg;
+
     float3 origin = _origin[id];
     float3 direction = _direction[id];
     direction /= norm(direction);
-- 
cgit