1. A computer-implemented method, comprising: computing an upsampling operator based on a first coarse-level cloth mesh and a fine-level cloth mesh of a given surface; the first coarse-level cloth mesh having been generated based on at least one training frame that includes cloth animation data, and the fine-level cloth mesh having been generated based on the at least one training frame and the first coarse-level cloth mesh, wherein the first coarse-level cloth mesh provides one or more tracking constraints for the fine-level cloth mesh; wherein the upsampling operator defines a first matrix configured to add fine-level detail to a second coarse-level cloth mesh dynamically generated within a three-dimensional graphics environment.