Rendering cache in an object oriented system

摘要

A method and system for caching graphic information for display in a graphics processing system to avoid repeated rendering each time a graphic is required to be re drawn. A developer of an application program can specify which graphic objects should be cached, and request that caching be carried out for those graphics. Devices may also specify whether caching is desired, and this preference may be overridden by the caching system. The caching system may create a single cache object for several devices, or may create several cache objects for corresponding devices, depending on the characteristics of the devices. The objects are cached in a device-dependent manner. The cached graphic may be sent to methods and devices in the same mariner that any other graphic is sent.