Patent ID: 6320580
Filing Date: 2001-11-20
Classification: G06T

Abstract:
An image processing apparatus for generating image data for displaying a plurality of polygons, comprising:a mask generator for generating first mask data indicating effective pixel areas of said polygons in a display screen and Z values indicating depths in said display screen for the respective effective pixels from polygon data including position data of said polygons in said display screen, generating second mask data having, as an effective pixel area, a pixel area having a Z value in the foreground of a Z value of another processed polygon among said effective pixel areas of said first mask data, executing an exclusion operation to delete said effective pixel area of said generated second mask data from the effective pixel area of generated second mask data of another polygon to thereby generate new second mask data, and performing generation of said new second mask data polygon by polygon; anda rendering section for implementing a rendering process on each of said polygons, with respect to said effective pixel area indicated by said new second mask data supplied from said mask generator.