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This image shows an example of a light shader and a volume shader. The light shader is a spotlight with multiple rings of circular cutouts. It has controls for light color, cone angle, number of rings of circles, and how big the circles should be. The volume shader is based on the "smoke.sl" shader by Larry Gritz but with added sparkles of dust. 
Here is an example of a procedural shader used to create a knot pattern. The user can control the color inside and outside the rings, how many times the rings are repeated on the surface, and the opacity of the spaces between the rings. The shader also has a control for the general shape of the object. In order for the pattern not to get excessively squished or streched out, it needs to be projected differently on, for example, a cube than on a torus. 
This image shows a simple example of environment mappping and shadows. |