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-rw-r--r--chroma/cuda/bvh.cu3
1 files changed, 3 insertions, 0 deletions
diff --git a/chroma/cuda/bvh.cu b/chroma/cuda/bvh.cu
index 2080ab7..053eb2b 100644
--- a/chroma/cuda/bvh.cu
+++ b/chroma/cuda/bvh.cu
@@ -179,6 +179,9 @@ extern "C"
// Quantize bounding corners and centroid
uint3 q_lower = quantize3(lower, world_origin, world_scale);
+ if (q_lower.x > 0) q_lower.x--;
+ if (q_lower.y > 0) q_lower.y--;
+ if (q_lower.z > 0) q_lower.z--;
uint3 q_upper = quantize3(upper, world_origin, world_scale) + 1;
uint3 q_centroid = quantize3(centroid, world_origin, world_scale);