1. A system for generating a depth tile, the system comprising: an alignment module configured to map each pixel of a depthmap to a corresponding pixel of a map tile, wherein each pixel of the depthmap comprises a depth value, and wherein each pixel of the map tile is associated with a terrain elevation value; a transform module configured to adjust the depth value of each pixel of the depthmap based on a corresponding terrain elevation value; and a depth tile module configured to generate the depth tile, wherein each pixel of the depth tile comprises a corresponding adjusted depth value.