To transfer a drawing from a CAD program to a renderer requires a go-between program. RenderMan by Pixar is the most common of these. It is a collection of procedures which are used to transfer data about a CAD drawing to the renderer in a format which it can use to render the image. RenderMan gives the user some choices about the drawing, such as the viewing angle. It works will all CAD and rendering software.
Texture maps are pictures stored in electronic format.
Two recent pieced of software for texture maps are Texture Universe by Autodesk and Classic Textures Volume 2 by Pixar. Both programs display in high resolution and work with all major CAD packages. Texture Universe is more expensive, but also contains a texture editor and search capabilities. Conclusion Shading and rendering are leaps forward in CAD technology which allow users to create accurate and with relatively little time and expertise. These technologies are still developing, and will be a major factor in the future of engineering and technology industries.