| 摘要 |
PURPOSE: A method for applying shading effect to a three-dimensional rendering image and an information storage medium for storing a program for executing the method are provided to express real-time shading effect rapidly and gently even with a graphic card and CPU with relatively low performance. CONSTITUTION: A three-dimensional object is modeled into a polygon mesh object having at least three vertexes, and shading effect is applied to an image rendered in real time using a data structure for each of the vertexes. When the shading effect is applied to the rendering image, for the purpose of obtaining an illumination value with respect to each of the vertexes, an additional operation is not carried out but a value previously stored in relation to the data structure is used. |
