1. A method, executed in a computer having a computer-readable memory, for continuous-level-of-detail texture mapping, comprising the steps of: storing a texture mip-map in said computer-readable memory, said mip-map comprising texel data representing a source texture; storing a texture clip-map in said computer-readable memory, said clip-map comprising a first-level clip-map having texel data representing a first level of detail of said source texture, a first origin and a first offset value associating said first offset value with a reference point of a scene to be rendered, and a second-level clip-map having texel data representing a second level of detail of said source texture, a second origin and a second offset value associating said second offset value with said reference point; and determining a desired level clip-map for a fragment of a texture image, and, if said desired level is between said first and second level clip maps, creating texel data by interpolation of texel data from two of said first-level clip map and said second-level clip map.