IdentityCLUTImageGenerator | Generate 2D identity color lookup table images

IdentityCLUTImageGenerator is a Swift library. IdentityCLUTImageGenerator has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

A lookup table is a cube of color values: the red, green, and blue components of an input color map to the x, y, and z coordinates of a location in that cube, and at that location in the cube is a corresponding output color. The 2D representation of a 3D color cube is an arrangement of slices. For example, a 16 x 16 x 16 color cube becomes a horizontal strip of 16 squares, each 16 x 16 pixels (that is, a 256 x 16 image). Each square contains a gradation of red and green components, and together the 16 squares form a gradation for the blue component. IdentityCLUTImageGenerator.playground generates 2D identity color lookup table images that can be use with image processing frameworks like MetalPetal, GPUImage, SceneKit, etc.