Abstract
When the surface texture is designed by CAD, a genuine expression is not done by the texture where it is drawn. Then, the purpose of study is a thing to examine the method of doing the rendering that becomes shape when designing to the texture made by CAD. The geometric data which was drawn up as the expedient, by the surface texture CAD system was read, by the fact that light ray calculation is done accurately making use of Ray tracing, real rendering of texture was done.