If you're looking for a cheap way to break texture repetition (and keep the texture seamless), I got something for you
#godotengine #shaders
Seamless texture sampler without repeating patterns / tiling. - Godot Shaders

Cheap (two texture reads) way to break repeating patterns when...

Godot Shaders
The article where it's from (the last technique): https://iquilezles.org/articles/texturerepetition/