Look-up-tables, more commonly referred to as LUTs, are as old as Mathematics itself. The act of precalculating things into a row or table is nothing new. But in the realm of graphics programming, this simple act unlocks some incredibly creative techniques, which both artists and programmers found when faced with tough technical hurdles.We’ll embark on a small journey, which will take us from simple things like turning grayscale footage into color, to creating limitless variations of blood-lustin...