So I'm generating hexagonal map from hexagonal prefab. Checking height with heightmap, adjusting height of middle verticles (red ones) and adjusting height of other verticles to blend with neighbour hexes. The problem is lighting of the map - it generates hard edges between every prefab as seen below. I know it's probably like this because multiple objects equals doubling verticles. Is there a way to kinda "weld" those neighbour verticles?