Futuristic Tiles

Futuristic Tiles was the first of my 'texture without a texture' experiments. At first it was the combination
of blending mathematically generated grids with an array of infinite rings dispersing from a 'spawn point'.

From then onward, I looked into appropriating colour with that logic. As a result, I give you this.
I don't exactly know how I came to getting the ring pop effect, but I believe it has something do with
the abuse of the positional data within the last alterations of outRGB.
The following is the result of fragment shading in my engine, GenGein.