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What is this Super Mario shading technique (the edge glow) called? It can best be seen on the legs.

Mario has a clear white glow outlining his model.

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Rim lighting.

http://blog.wolfire.com/2009/09/character-rim-lighting/

Basically you increase the brightness of a surface the more the tangent is pointing away from the camera.

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  • \$\begingroup\$ Beaten... by 15 seconds, ha! \$\endgroup\$
    – Vaughan Hilts
    Jun 13, 2013 at 22:58
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Looks to me to either be the Fresnel Falloff shader effect or some variant of a Rim Lighting. The pixels near the edges appear to be just brightened. You can see a similar effect described here.

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