I probably won't finish this resource pack so I might as well release it as is.
At first, I wanted this resource pack to make tiling less visible while remaining close to the original textures: each new block texture has 255 variations which come from a 256px x 256px texture divided in 256 tiles.

Example: Lapis Lazuli Ore


Then I started to change things like water, lava, fire, various models, lighting, which defeat the original purpose of this resource pack, but oh well.
Some textures could be improved, but I'm not sure if I should put more effort into matching the default textures since most of them will change anyway.
Requires Optifine.