Patent ID: 6429866
Filing Date: 2002-08-06
Classification: G06T

Abstract:
A three-dimensional graphics drawing apparatus, comprising:a hidden surface calculating portion to determine whether a part is visible on a picture screen based on three-dimensional data; a tone calculating portion to calculate tones of pixels at prescribed intervals in the part determined to be visible on the picture screen by said hidden surface calculating portion; an interpolating portion to interpolate a pixel whose tone has not been calculated, based on the tones of pixels at the prescribed intervals calculated by said tone calculating portion; and a drawing portion to draw graphics on the picture screen based on the result of calculation by said tone calculating portion and the result of interpolation by said interpolating portion; wherein said hidden surface calculating portion performs a hidden surface calculation processing by a Z buffer method, and wherein said interpolating portion interpolates said pixel whose tone has not been calculated by referring to a Z value calculated by the Z buffer method.