PICTURE DRAWING APPARATUS AND PICTURE DRAWING METHOD

摘要

A picture drawing or method used in a graphics computer,a special effect device or a video game machine. For generatingdata required for picture drawing by pre-processing by apre--processor 32 based on a drawing command for drawing a picturemodel defined by the combination of unit figures, and generatingpixel data on the unit figure basis by texture mapping based onthe generated data for drawing a picture on a frame buffer 18,the texture data required by a drawing engine 33 is transferredin the pre-processing stage from a texture area on the framebuffer 18 to a texture cache 33F, and the pre-processor 32 andthe drawing engine 33 are operated in pipelining. This enablestexture mapping or MIP mapping without halting the picturedrawing means, while reducing the number of times of texturememory accessing and the accessing time for raising the overallpicture drawing speed.