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We start our journey through time back in 1992, with the advent
of Wolfenstein3D by id. This was one of the first 3D games to
feature textured surfaces.
Here we have an actual screenshot from the game, taken as our character
approaches a textured wall. We can see the rendering engine is doing simple
point
sampling into the texture array. During this talk, we will call this the
"nearest-neighbor" sampling approach. This is fast, but results
in the pixelated appearance shown here.
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