[Bf-blender-cvs] [63d017b] master: Cycles: Avoid per-split memory allocation for the new references list

[Sergey Sharybin]

Commit: 63d017be90aef79492cae298e4c6add9abae067f
Author: Sergey Sharybin
Date:   Sun Feb 21 16:46:16 2016 +0100
Branches: master
https://developer.blender.org/rB63d017be90aef79492cae298e4c6add9abae067f

Cycles: Avoid per-split memory allocation for the new references list

===================================================================

M	intern/cycles/bvh/bvh_params.h
M	intern/cycles/bvh/bvh_split.cpp

===================================================================

diff --git a/intern/cycles/bvh/bvh_params.h b/intern/cycles/bvh/bvh_params.h
index 2b280d6..2e579ba 100644
--- a/intern/cycles/bvh/bvh_params.h
+++ b/intern/cycles/bvh/bvh_params.h
@@ -186,6 +186,7 @@ struct BVHSpatialStorage {
 	vector<BoundBox> spatial_right_bounds;
 	BVHSpatialBin spatial_bins[3][BVHParams::NUM_SPATIAL_BINS];
 	vector<int> spatial_indices;
+	vector<BVHReference> spatial_new_refs;
 };
 
 CCL_NAMESPACE_END
diff --git a/intern/cycles/bvh/bvh_split.cpp b/intern/cycles/bvh/bvh_split.cpp
index cafee25..5d33238 100644
--- a/intern/cycles/bvh/bvh_split.cpp
+++ b/intern/cycles/bvh/bvh_split.cpp
@@ -220,7 +220,8 @@ void BVHSpatialSplit::split(BVHBuild *builder, BVHRange& left, BVHRange& right,
 	 * Duplication happens into a temporary pre-allocated vector in order to
 	 * reduce number of memmove() calls happening in vector.insert().
 	 */
-	vector<BVHReference> new_refs;
+	vector<BVHReference>& new_refs = storage_->spatial_new_refs;
+	new_refs.clear();
 	new_refs.reserve(right_start - left_end);
 	while(left_end < right_start) {
 		/* split reference. */