Dynamic switching of texture mip-maps based on pix
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专利名称：Dynamic switching of texture mip-maps based on pixel depth value
发明人：Gautam P. Vaswani
申请号：US08/724616
申请日：19960930
公开号：US05973701A
公开日：
19991026
专利内容由知识产权出版社提供
摘要：A graphics subsystem includes hardware and/or software for permitting mip-maps to be dynamically switched based upon depth (Z) values. In addition, the system generates a SHIFT signal to permit automatic adjustment of texture parameters to facilitate retrieval of texture maps. The system includes a mip-map select logic or routine that compares the depth value of a pixel to be rendered with predetermined depth values. The depth values may be stored in a plurality of depth registers, and compared with the depth value of a pixel in a plurality of associated comparators. A mip-map is selected based upon the comparisons, and the SHIFT signal is generated to indicate the order of change with respect to a base reference mip-map. A texture engine receives the SHIFT signal and uses the associated base address of the selected mip-map and shifted texture parameters to define an address for the texture map.
申请人：CIRRUS LOGIC, INC.
代理机构：Conley, Rose & Tayon
代理人：Steven A. Shaw
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