APPARATUS TO USE A FIFO AS A POST-VERTEX CACHE AND METHOD THEREOF

摘要

An apparatus and a method for using FIFO(First In First Out) as a texture cache are provided to add a vertex cache function to FIFO to improve the processing performance of a geometry engine when a previously processed vertex is inputted again. A geometry engine(350) includes a storage unit, a vertex shader(354), a vertex cache(355), and an input processor. The storage unit stores vertex and an index corresponding to the vertex. The vertex shader geometrically processes the vertex provided by the storage unit. The vertex cache stores the vertex processed by the vertex shader. The input processor receives vertex from a central processing unit and determines whether geometrically processed vertex corresponding to the vertex exists in the vertex cache.