Kabushiki Kaisha Square Enix

Square Co., Ltd.

Toshinori Shimono

The present invention permits realistic drawing of a natural shadow image, even when shadow images overlap each other on a background image, while preventing the shadow image from becoming darker in the superimposed area than in the other areas or preventing a decrease in the degree of translucence. The invention imparts a shadow object to each solid model to be drawn, determines whether shadow objects are superimposed from the positional relationship of the shadow objects imparted to the solid models to be drawn, and for an area where shadow objects are determined to be superimposed, the drawing process is executed by displaying only one of the superimposed shadow objects.

Computer-readable recording medium storing a program for 3-D computer image processing, method of depicting shadow, and video game apparatus

Graduation rendering processing brings about an effective defocused image of multi-levels of halftone according to the depth of the virtual three-dimensional space without requiring complicated operation processing. Subtraction processing is carried out in which the luminosity of an original image of the frame buffer to be displayed on a screen is reduced by a greater luminosity in the images located at the back than at the front in the depth of the virtual three-dimensional space. Then, addition processing is carried out in which images having a luminosity corresponding to the reduced value of luminosity in the subtraction processing are distributed and added around the original image of the frame buffer with the positions of the images shifted with respect to the original image. The image of the frame buffer, which has been subjected to the subtraction processing and addition processing, is displayed on the screen.

Computer readable recording medium having programs for three-dimensional computer image processing stored thereon, graduation rendering processing method, and video game device

Growing community of inventors

Tokyo, Japan

Toshinori Shimono