Update router_lookahead_map_utils.cpp

Author: Wang-Yuanqi-source

vpr/src/route/router_lookahead_map_utils.cpp

@@ -422,7 +422,7 @@ t_src_opin_delays compute_router_src_opin_lookahead(bool is_flat) {
                         int ptc = rr_graph.node_ptc_num(node_id);
                         const VibInf* vib;
                         if (!device_ctx.arch->vib_infs.empty()) {
-                            vib = device_ctx.vib_grid[sample_loc.layer_num][sample_loc.x][sample_loc.y];
+                            vib = device_ctx.vib_grid.get_vib(sample_loc.layer_num, sample_loc.x, sample_loc.y);
                         }
                         else {
                             vib = nullptr;
@@ -1042,7 +1042,7 @@ static void dijkstra_flood_to_wires(int itile,
                                                                                             rr_graph.node_layer(next_node)});
                 const VibInf* vib;
                 if (!device_ctx.arch->vib_infs.empty()) {
-                    vib = device_ctx.vib_grid[rr_graph.node_layer(next_node)][rr_graph.node_xlow(next_node)][rr_graph.node_ylow(next_node)];
+                    vib = device_ctx.vib_grid.get_vib(rr_graph.node_layer(next_node), rr_graph.node_xlow(next_node), rr_graph.node_ylow(next_node));
                 }
                 else {
                     vib = nullptr;
@@ -1414,7 +1414,7 @@ static void expand_dijkstra_neighbours(util::PQ_Entry parent_entry,
                                                                                     rr_graph.node_layer(child_node)});
         const VibInf* vib;
         if (!device_ctx.arch->vib_infs.empty()) {
-            vib = device_ctx.vib_grid[rr_graph.node_layer(child_node)][rr_graph.node_xlow(child_node)][rr_graph.node_ylow(child_node)];
+            vib = device_ctx.vib_grid.get_vib(rr_graph.node_layer(child_node), rr_graph.node_xlow(child_node), rr_graph.node_ylow(child_node));
         }
         else {
             vib = nullptr;