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Abstract

A game system, program and image generating method can realistically represent glow or halo occurring around a light source with reduced processing load. A glow object G is displayed nearer to a view point than an object OB when the glow object G overlaps the object OB located nearer to a view point than a light source LS as viewed from a viewpoint. The glow object G is drawn at a position on a perspective transformation plane corresponding to the position of the light source LS. If the object OB is on a line between the light source LS and the viewpoint, the glow object G is made non-display or reduced in its effect intensity. The effect intensity of the glow is varied according to the degree of overlap between the object OB and the light source LS (or glow object G) as viewed from the viewpoint. The effect intensity of the glow may be varied according to the distance between the line between the light source LS with the viewpoint and the object OB or the area of overlap between the object OB and the light source LS (or glow object G). The degree of overlap is judged using the bounding volumes for the object OB and light source LS (or glow object G).

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First Claim