Phong shading
Interpolation technique for surface shading / From Wikipedia, the free encyclopedia
This article is about Phong's normal-vector interpolation technique for surface shading. For Phong's illumination model, see Phong reflection model.
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.
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