1 files changed, 37 insertions, 0 deletions
diff --git a/thirdparty/embree/kernels/bvh/bvh_rotate.h b/thirdparty/embree/kernels/bvh/bvh_rotate.h
new file mode 100644
index 0000000000..61ef64a679
--- /dev/null
+++ b/thirdparty/embree/kernels/bvh/bvh_rotate.h
@@ -0,0 +1,37 @@
+// Copyright 2009-2021 Intel Corporation
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include "bvh.h"
+
+namespace embree
+{
+  namespace isa 
+  { 
+    template<int N>
+    class BVHNRotate
+    {
+      typedef typename BVHN<N>::NodeRef NodeRef;
+
+    public:
+      static const bool enabled = false;
+
+      static __forceinline size_t rotate(NodeRef parentRef, size_t depth = 1) { return 0; }
+      static __forceinline void restructure(NodeRef ref, size_t depth = 1) {}
+    };
+
+    /* BVH4 tree rotations */
+    template<>
+    class BVHNRotate<4>
+    {
+      typedef BVH4::AABBNode AABBNode;
+      typedef BVH4::NodeRef NodeRef;
+      
+    public:
+      static const bool enabled = true;
+
+      static size_t rotate(NodeRef parentRef, size_t depth = 1);
+    };
+  }
+}