Diffuse

Normal transformation, anisotropic filtering, skinning, lambertian, angle axis, vertex shader. Quaternion, texture map, diffuse, model view matrix, transpose of inverse, bones.

One method of saving a GPU computations is to bake the lighting into the surfaces themselves.

2, 3 Show specified diffuse and ambient light

For example, if the specular component is given a white color, the object looks more like a shiny plastic.

One idea is to attenuate the specular term by the lumbersian fall off.

In reality, metals can indeed be given a roughened surface to give them a glossier, diffuse

Here's a view of the model with the low shininess and the light coming up from behind it.

So, if we break that down into layers, here's that diffuse component we saw in the first slide.

Metallic objects have no lambertian diffuse term. Well, not a lie, I just like being dramatic.

Metals themselves are essentially all specular. Let me say that again, because all this time we've been living a lie.

From farther away, they may be no change in pixel location.

If your surface represents a shiny metal, you probably don't want a diffuse term.

Spread

Diffusion

However, on a an atomic level, metallic objects have a free floating soup of electrons on the surface which absorbs and reemits incoming photons.

Error diffusion

Image Diffusion

Refraction

Refraction

Reflection

Reflections

Reflect

Monochrome error diffusion

Fresnel reflectivity

No refueling means you can seal them up and they're not going to be a proliferation risk, and they're not going to have either nuclear material or radiological material proliferated from their cores.

These are good words to know.

Waste profile, much healthier.

So they diffused.

Reflection

What if I were to ask you four is twenty percent of what number? So a lot of people's reflex might just be, oh, let me take twenty percent.

Reflex.

This is diffusion.

That's right, he said.

Special reflection

We're changing the characteristics of the surface of the land, the reflectivity.

Rather their goal is to look reasonable to the viewer.

No reflection

And blue.

That's a reflex action.

Reflections on puddle.

A final instance where things might go wrong is reflective objects that have specular reflections.

Reflection print scanner

Conserve energy for reflection

Redirection