From 64762c5acddba333f2d86c02b4df07479d98525f Mon Sep 17 00:00:00 2001
From: Evghenii <egaburov@dds.nl>
Date: Mon, 18 Nov 2013 13:15:05 +0100
Subject: [PATCH] +1

---
 examples_cuda/rt/rt.cu | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/examples_cuda/rt/rt.cu b/examples_cuda/rt/rt.cu
index b7277cf6..46267941 100644
--- a/examples_cuda/rt/rt.cu
+++ b/examples_cuda/rt/rt.cu
@@ -2,6 +2,7 @@
 #define programIndex (threadIdx.x & 31)
 #define taskIndex (blockIdx.x*4 + (threadIdx.x >> 5))
 #define taskCount (gridDim.x*4)
+#define warpIdx (threadIdx.x >> 5)
 
 #define float3 Float3
 struct Float3
@@ -235,7 +236,12 @@ static inline bool BVHIntersect(const  LinearBVHNode nodes[],
     bool hit = false;
     // Follow ray through BVH nodes to find primitive intersections
      int todoOffset = 0, nodeNum = 0;
+#if 0
+     __shared__ int todoX[64*4];
+     volatile int * todo = &todoX[warpIdx * 64];
+#else
      int todo[64];
+#endif
 
     while (true) {
         // Check ray against BVH node