Patent ID: 8824776

Claim:
A collision detection system comprising: a processing section; a drawing section adapted to perform a drawing process; one or more processors that are configured to perform as the processing section and the drawing section; and a depth buffer to which depth information is set, wherein the depth information of an object arranged on a target side is set to the depth buffer as depth map information, the drawing section performs a first drawing process that draws a first surface when viewed from an opposite viewpoint from a predetermined viewpoint out of surfaces constituting a collision detection target object with reference to the depth map information in the depth buffer, and the first drawing process includes a depth test, and a second drawing process that draws a second surface when viewed from the opposite viewpoint from the predetermined viewpoint out of the surfaces constituting the collision detection target object, and the second drawing process does not include the depth test, and the processing section performs collision determination of determining whether or not the collision detection target object collides with the object on the target side based on a result of the first drawing process and the second drawing process.