Miss-rate reduction in texture cache by adaptive cache indexing

An adaptive cache indexing is proposed to reduce the memory bandwidth required for fetching texture image data by reducing the cache miss-rate through adaptive selection of index bits. By designing a texture mapping hardware including a texture cache, the number of cache miss and total cycles are examined for texture mapping from cycle-accurate HDL simulations on some test scenes. The number of cache miss and total cycles were reduced by 23% and 8.9% respectively by the adaptive cache indexing.