Specular Lighting

Well, we have diffuse lighting which handles matte surfaces and such, but to get the highlights that lighting can create we need to add what is called specular lighting. There are several techniques for doing specular lighting. First I will just be using what is called Phong shading as its easier to implement, then later in the project, I will move on to Cook-Torrance shading which is more realistic. So here is an image of our scene with Phong specular shading.

It's looking pretty good, but rather drab, time for some colors. How about Red, Green, and Blue, a computer scientists favorite colors. So here are our now colored spheres complete with diffuse and specular lighting.