Editing Shading (section)

{{Short description|Depicting depth through varying levels of darkness}}
{{about|shading in computer graphics|the GPU technology that performs these techniques|Shader|other uses|Shade (disambiguation){{!}}Shade}}
{{More citations needed|date=May 2007}}
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| image1 = Flatshading01.png
| image2 = Gouraudshading01.png
| image3 = Phongshading01.png
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| caption1 = [[Flat shading]] describes a number of simple lighting techniques. In this case, the lighting value is determined once for each face. The color value can also be determined per object or per vertex.
| caption2 = [[Gouraud shading]] (1971) improved the appearance of curved objects.
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| caption3 =  [[Phong shading]] [[interpolation]] is a more realistic shading technique developed by [[Bui Tuong Phong]] in 1973.
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'''Shading''' refers to the depiction of [[depth perception]] in [[3D model]]s (within the field of [[3D computer graphics]]) or [[illustration]]s (in [[visual art]]) by varying the level of [[darkness]].<ref>{{Cite web|url=http://hexianghu.com/graphics/2015/03/23/shading/|title=Graphics: Shading|website=hexianghu.com|access-date=2019-09-10}}</ref> Shading tries to approximate local behavior of [[light]] on the object's surface and is not to be confused with techniques of adding shadows, such as [[shadow mapping]] or [[shadow volume]]s, which fall under global behavior of light.