Texture cache memory system of non-blocking for texture mapping pipeline and operation method of the texture cache memory

The present invention relates to a non-blocking texture cache memory system for a texture mapping pipeline and a method for operating a non-blocking texture cache memory. The texture cache memory includes a retry buffer which temporarily stores result data by a heat pipeline or a miss pipeline, a retry buffer lookup unit which looks up the retry buffer in response to a texture request transmitted from a processor, a checking unit which checks whether the result data corresponding to the texture request is stored in the retry buffer from the lookup result, and an output control unit which outputs the stored result data to the processor if the checking result shows that the result data corresponding to the texture request is stored.