History
The idea of deferred shading was originally introduced by Michael Deering and his colleagues in a paper published in 1988 entitled The triangle processor and normal vector shader: a VLSI system for high performance graphics. Although the paper never uses the word "deferred", a key concept is introduced; each pixel is shaded only once after depth resolution. Deferred shading as we know it today, using G-buffers, was introduced in a paper by Saito and Takahashi in 1990, although they too do not use the word "deferred". Around 2004 implementations on commodity graphics hardware started to appear. The technique later gained popularity for applications such as video games, finally becoming mainstream around 2008 to 2010.
Read more about this topic: Deferred Shading
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