Phong shading

In 3D computer graphics, Phong shading, Phong interpolation,^[1] or normal-vector interpolation shading^[2] is an interpolation technique for surface shading invented by computer graphics pioneer Bui Tuong Phong. Phong shading interpolates surface normals across rasterized polygons and computes pixel colors based on the interpolated normals and a reflection model. Phong shading may also refer to the specific combination of Phong interpolation and the Phong reflection model.

^ Watt, Alan H.; Watt, Mark (1992). Advanced Animation and Rendering Techniques: Theory and Practice. Addison-Wesley Professional. pp. 21–26. ISBN 978-0-201-54412-1.
^ Foley, James D.; van Dam, Andries; Feiner, Steven K.; Hughes, John F. (1996). Computer Graphics: Principles and Practice. (2nd ed. in C). Addison-Wesley Publishing Company. pp. 738–739. ISBN 0-201-84840-6.

[Watt1992-1] Watt, Alan H.; Watt, Mark (1992). Advanced Animation and Rendering Techniques: Theory and Practice. Addison-Wesley Professional. pp. 21–26. ISBN 978-0-201-54412-1.

[Foley1996-2] Foley, James D.; van Dam, Andries; Feiner, Steven K.; Hughes, John F. (1996). Computer Graphics: Principles and Practice. (2nd ed. in C). Addison-Wesley Publishing Company. pp. 738–739. ISBN 0-201-84840-6.

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