Difference between revisions of "Environment map"
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| − | # | + | An environment map is used for three purposes in a game engine: |
| + | # Reflections: simulates the look of a shiny surface, like chrome or water. | ||
| + | # Refractions: simulates the view behind or through a transparent surface, like glass or water. | ||
| + | # Background: simulates the distant view behind the game models. | ||
| + | |||
| + | An environment map is usually painted to look like an all-encompassing world. | ||
| + | |||
| + | [[image:reflection.gif]][[image:reflectmap.gif]]<br clear="all"/> | ||
| + | In this example, the sky texture on the right has been used as a reflection on the torus. | ||
| + | |||
| + | Environment mapping can also be used to fake the look of specular highlights on an object, by painting only the light sources into the environment texture. | ||
| + | |||
| + | * [[Cube map]] | ||
| + | * [[Diffusely convolved cube map]] | ||
| + | * [[DuDv map]] | ||
| + | * [[Spherical environment map]] | ||
| + | |||
| + | ---- | ||
| + | [[Category:Glossary]] | ||
Latest revision as of 18:42, 25 February 2015
An environment map is used for three purposes in a game engine:
- Reflections: simulates the look of a shiny surface, like chrome or water.
- Refractions: simulates the view behind or through a transparent surface, like glass or water.
- Background: simulates the distant view behind the game models.
An environment map is usually painted to look like an all-encompassing world.
In this example, the sky texture on the right has been used as a reflection on the torus.
Environment mapping can also be used to fake the look of specular highlights on an object, by painting only the light sources into the environment texture.
