| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a game system, a program and an information storage medium capable of realizing efficient contour plotting processing. SOLUTION: A mapping image where an object color is set in the inner area of the contour of an object and a contour color is set in the outer area is generated, and mapped into a virtual polygon with a bilinear filter system while shifting texture coordinates to plot the contour of the object. Such a virtual polygon which includes the image of the object after transparent transformation and whose size is changed in accordance with the size of the object after the transparent transformation is generated. Anαvalue set in the inner area of the contour of the object is made different from anαvalued set in the outer area, and the contour area of the object and an area obtained by excluding the contour area from the inner area of the contour are discrimination on the basis of anαvalue after texel interpolation. A Z value obtained on the basis of object information is set in the virtual polygon, and the hidden surface removal of the virtual polygon into which a contour image is mapped is carried out on the basis of the Z value.</p> |
