initial commit, 4.5 stable

thirdparty/embree/kernels/bvh/bvh_node_base.h

@@ -0,0 +1,43 @@
+// Copyright 2009-2021 Intel Corporation
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include "bvh_node_ref.h"
+
+namespace embree
+{
+  
+  /*! BVHN Base Node */
+  template<typename NodeRef, int N>
+    struct BaseNode_t
+  {
+    /*! Clears the node. */
+    __forceinline void clear()
+    {
+      for (size_t i=0; i<N; i++)
+        children[i] = NodeRef::emptyNode;
+    }
+    
+    /*! Returns reference to specified child */
+    __forceinline       NodeRef& child(size_t i)       { assert(i<N); return children[i]; }
+    __forceinline const NodeRef& child(size_t i) const { assert(i<N); return children[i]; }
+    
+    /*! verifies the node */
+    __forceinline bool verify() const
+    {
+      for (size_t i=0; i<N; i++) {
+        if (child(i) == NodeRef::emptyNode) {
+          for (; i<N; i++) {
+            if (child(i) != NodeRef::emptyNode)
+              return false;
+          }
+          break;
+        }
+      }
+      return true;
+    }
+    
+    NodeRef children[N];    //!< Pointer to the N children (can be a node or leaf)
+  };
+}