What is parallax?

Question

Parallax

Answer 1

Parallax refers to a concept related to computer graphics and particularly 3D models optimization technique [Parallax materials vs. High poly models]. [https://wiki.unrealengine.com/Parallax_Occlusion_Mapping]
[https://www.gamedev.net/articles/programming/graphics/a-closer-look-at-parallax-occlusion-mapping-r3262/]

Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines. The term is derived from the Greek word παράλλαξις (parallaxis), meaning "alternation". [https://en.wikipedia.org/wiki/Parallax]

Answer 2

The header image and title are scrolled in parallax mode.
https://code.sololearn.com/Wj885EE1xB23/?ref=app