| 摘要 |
PROBLEM TO BE SOLVED: To represent real video of a virtual reality system in real time by obtaining shape variation associated with three-dimensional composition with a plane definition body and the movement of a viewpoint by rendering a gaseous body as a three-dimensional body. SOLUTION: In a 1st pass, the maximum and minimum values of primitive (z) values and the cumulative density of a light source coordinate system are obtained by a primitive generator 1, a (z) value comparator 2, and an adder 3 and stored in an image memory 4, and then filtered. In a 2nd pass, coordinate values of a viewpoint coordinate system are obtained at the same time together with light source coordinate system coordinate values of a primitive and the maximum and minimum values and the cumulative density of (z) values are obtained as well as the 1st pass and stored in a 2nd image memory 8. The transmission luminance of the primitive on an optical source axis is obtained by circuits 7 and 9. |
