Task A rendering processing apparatus, and a rendering processing method capable of reducing a load on simulation processing in a virtual space.SOLUTION: What is claimed is: 1. A drawing processing program to be executed in a computer device, comprising: virtual box setting means for setting a plurality of rectangular parallelepiped virtual boxes in a rectangular parallelepiped shape in a virtual space; An object placement means for placing an object having the same shape and size as the virtual box; a reference influence degree serving as a reference is set in a first virtual box in which a straight line extending from the light source can intersect with the arranged object before intersection A degree of influence setting means for setting a degree of influence of the second virtual box based on the reference influence degree and a drawing processing means for causing the drawing processing means to execute a drawing process in the virtual space based on the set influence degree .(FIG.
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