A method, system and computer-readable medium for efficiently rendering changed portions of a document stored in a texture image file that is mapped to a generated three-dimensional model. The system includes a display device, a memory for storing texture image files, and a processor coupled to the display device and the memory. The processor includes a document component for determining the portions in a document that will change based on the input event, determining the locations of the determined portions that will change based on the input event, rendering the determined portions in the document that will change based on the input event, and storing the rendered portions within a texture image file. The processor also includes a three-dimensional component for determining the locations in the texture image file of the stored rendered portions based on the determined locations of the portions, and mapping the changed portions to the generated three-dimensional model based on the determined locations in the texture image file of the stored rendered portions.