Light · TechniqueBeginner
Fresnel
Brighten a surface where it turns away from the camera.
NormalViewSurface
Cards
One live example to tweak, learn and copy.
How it works
Placeholder text for the walking skeleton. Israel replaces it.
Surfaces seen at a grazing angle look brighter and more reflective than surfaces that face you. Fresnel effects fake
that by comparing the surface normalA unit vector perpendicular to a surface, pointing the way it faces. Lighting and Fresnel effects compare it with other directions. Normal A unit vector perpendicular to a surface, pointing the way it faces. Lighting and Fresnel effects compare it with other directions.FundamentalSources with the direction toward the camera.
Further reading
- dot (opens in a new tab)Reference
- Dot product (opens in a new tab)Reference
- Basic Lighting (opens in a new tab)Article
- Normal (geometry) (opens in a new tab)Reference
- normalize (opens in a new tab)Reference
- PBR: Theory (opens in a new tab)Article
- Schlick's approximation (opens in a new tab)Reference
- pow (opens in a new tab)Reference