b and fig4 c that is the greater the motion the lower the resolution of the model that is required the reader will recognize that other types of polygon reduction algorithms are available and the present invention is not intended to be limited to any particular reduction technique motion sorting according to the present invention may be implemented when the cpu 26 is handling the 3d geometry or when the graphics system 34 is handling the 3d geometry in the case where the cpu 26 handles the geometry the data paths to the graphics system 34 should include an indication of the quality to be applied in the rendering process that may be achieved by including the information as a part of the stream of vertex information the embodiment set forth above will more likely be implemented when the geometry is handled by the graphics system 34 other techniques for detecting or estimating motion may be used see for example agrawala u201c model based motion estimation for synthetic images u201d acm multimedia 1995 which is hereby incorporated by reference note that motion detection and estimation as described in that article as well as in the industry are generally applied to video not graphics.