Persistence of Vision Raytracer Version 3.1 Glass finishes and textures Changes in ver. 3.1 moved refraction and ior to the interior statment. Use I_Glass in conjunction with each of the finish statments below. Glass Interior Glass Finishes Glass Textures Simple clear glass More like an acrylic plastic An excellent lead crystal glass! A few color variations on Norm's glass Ruby glass Orange/Amber glass Vicks bottle, glass