Glossary
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## Glossary

point light source

  A light source that emits light from a particular location in the world. The light is emitted in all directions evenly.

fragment lighting

  Evaluating the lighting equation at every fragment.

  This is also called Phong shading, in contrast with Goroud shading, but this name has fallen out of favor due to similarities with names for other lighting models.

light attenuation

  The decrease of the intensity of light with distance from the source of that light.

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