A scene composed of surfaces, lightsources and color. VARKON rendering is based on OpenGL. You can define your own lightsources, your own colors and your own (parametric) geometry of course. You can select between smooth and flat shading and you can control the tesselation quality of your surfaces. Surfaces may be assigned any colors but you may also assign a material attribute to a surface specifying exactly the ambient, diffuse, specular and illuminent color components as well as a the shininess.