ROY TRACING APPRATUS AND METHOD

摘要

A method for selecting a MIP-map level is used for Texture Mapping based on Global Illumination. The method for selecting the MIP-map level confirms Object information on at least one object on a screen. The object information can include the number, shape, and the composition of objects on the screen, and/or the spatial position of a relevant object on the screen. Based on the object information, a MIP-map level selection algorithm is determined. The MIP-map level selection algorithm includes ray tracing and/or distance measuring, wherein the ray tracing selects the MIP-map based on the Differential value of adjacent rays, and the distance measuring can select a MIP-map by calculating the distance at which the ratio of pixels and texels reach 1:1. Based on the determined method, the MIP-map level is selected.

主权项

1. A method of selecting a MIP-MAP level for a global illumination based texture mapping, the method comprising:
identifying object information about at least one object in a screen, the object information including a number of the at least one object, shape of the at least one object, material of the at least one object in the screen or location of a corresponding object on a space in the screen; determining the MIP-MAP level selection algorithm based on the object information, the MIP-MAP level selection algorithm including a differential method and/or a distance measuring method, the differential method selecting a MIP-MAP based on differential values of adjacent rays and the distance measuring method selecting a MIP-MAP by calculating a distance in which a ratio of a pixel and a texel becomes 1:1; and selecting a MIP-MAP level based on the determined method.