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{{Short description|Shading algorithm in computer graphics}}
{{distinguish|Phong shading}}
The '''Phong reflection model''' (also called '''Phong illumination''' or '''Phong lighting''') is an [[Empirical modelling|empirical model]] of the [[illumination model|local illumination]] of points on a [[Surface (mathematics)|surface]] designed by the computer graphics researcher [[Bui Tuong Phong]]. In [[3D computer graphics]], it is sometimes referred to as <!--DO NOT LINK-->"Phong shading"<!--DO NOT LINK-->, particularly if the model is used with the [[Phong shading|interpolation method of the same name]] and in the context of [[pixel shader]]s or other places where a lighting calculation can be referred to as “[[shading]]”.
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