restricting scope of CALL_CUBS macro

The CALL_CUBS macro has a slightly different definition in the two similar code files that use it, namely PointsToGrid.cuh and TopologyBuilder.cuh. This fix restricts the scope of each macro definition to just the code file where it is used.

Signed-off-by: Matthew Cong <mcong@nvidia.com>

Author: sifakis

nanovdb/nanovdb/tools/cuda/PointsToGrid.cuh

@@ -1139,6 +1139,13 @@ inline void PointsToGrid<BuildT, ResourceT>::processLeafNodes(size_t pointCount)
 
 //-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 
+// Undefine utility macro for cub functions
+#ifdef CALL_CUBS
+#undef CALL_CUBS
+#endif
+
+//-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+
 template<typename BuildT, typename ResourceT>
 template<typename PtrT>
 inline void PointsToGrid<BuildT, ResourceT>::processPoints(const PtrT, size_t pointCount)

nanovdb/nanovdb/tools/cuda/TopologyBuilder.cuh

@@ -440,6 +440,13 @@ inline void TopologyBuilder<BuildT>::processLeafOffsets(cudaStream_t stream)
 
 //-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 
+// Undefine utility macro for cub functions
+#ifdef CALL_CUBS
+#undef CALL_CUBS
+#endif
+
+//-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+
 namespace topology::detail {
 
 template <typename BuildT>