OpenGL Programming Guide: The Official Guide to Learning OpenGL, Version 4.3, Eighth Edition

Regular Patterns

For our first example, we construct a shader that renders stripes on an object. A variety of man-made objects can be rendered with such a shader: children’s toys, wallpaper, wrapping paper, flags, fabrics, and so on.

The object in Figure 8.1 is a partial torus rendered with a stripe shader. The stripe shader and the application in which it is shown were both developed in 2002 by LightWork Design, a company that develops software to provide photorealistic views of objects created with commercial CAD/CAM packages. The application developed by LightWork Design contains a graphical user interface that allows the user to interactively modify the shader’s parameters. The various shaders that are available are accessible on the upper-right ...