1. A method, comprising: performing, by a computing device: for a portion of map data including a feature of a given feature type: specifying, for the feature, a level-of-detail texture from among a plurality of level-of-detail textures for the given feature type, and wherein said plurality of level-of-detail textures has an order according to level-of-detail; and rendering the portion of map data, wherein said rendering comprises: providing, to a rendering unit, the specified level-of-detail texture with a mipmap chain for the specified level-of-detail texture; wherein the mipmap chain for the specified level-of-detail texture comprises a portion of another one of the plurality of level-of-detail textures adjacent to the specified level-of-detail texture in said order.