There was an old AMD/Ati demo where they did per-pixel sorting, basicaly a per pixel linked list of fragments. In general: https://en.wikipedia.org/wiki/Order-

There was an old AMD/Ati demo where they did per-pixel sorting, basicaly a per pixel linked list of fragments. In general: https://en.wikipedia.org/wiki/Order-independent_transparency https://en.wikipedia.org/wiki/Order-independent_transparency