Do you need the effect to cover the whole landscape, or just some decent area around the player? You can make the grid follow the player, but it involves a little bit more tricky scripting. Ie, you need to always be moving the texture by the -movement of the player in texture space so that the texture doesn’t appear to move to the player, and you need to softly fade out the influence of the texture at the boundaries so you don’t see detail wrapping or repeating in on itself.