1. A rendering processing method for rendering in projection upon a two-dimensional screen an object arranged upon a three-dimensional space and configured with at least one polygon, comprising the steps of: applying to the polygon structuring the object a first texture that determines color and design thereof; and performing translucent synthesis of a second texture having a dense distribution pattern of color with a predetermined slant relative to coordinates of the two-dimensional screen, onto an object comprising a polygon applied with the first texture.