1. A method in a computing device for augmenting a three-dimensional (3D) scene with two-dimensional (2D) map data, the method comprising: receiving 3D map data that includes 3D geometry data and imagery texture data; for a specified perspective of a virtual camera in a 3D coordinate system, rendering geometry of the 3D scene using the 3D geometry data, wherein the specified perspective includes a position and orientation relative to the 3D scene; generating a map texture using the 2D map data in accordance with the perspective of the virtual camera in the 3D coordinate system; and applying (i) the imagery texture and (ii) the map texture to the rendered geometry.