A
shading model is a representation of how light bounces when it hits
a surface. Different models simulate different types of materials
better.
| Model |
Useful for... |
Example |
| Lambert |
Matte materials (chalk, matte paint, unpolished surfaces). |
|
| Phong |
Glassy or glossy materials (plastic, glass, chrome). |
|
| Blinn |
Dull metallic materials (brass, aluminum). |
|
| Lightsource |
A special lighting model that has no shading. Can be used
to represent, for example, the surface of a switched-on lightbulb.
Objects shaded with this model do not cast light into the scene.
|
|
These shading models
and their parameters (for example, color, shininess, and reflectivity)
determine the base look for a shader. You can then modify the base
look by mapping different types of textures onto the shader parameters.
