Do something like wpo / scalar (set to 2560) and mask RG. Use the output as the UV.
Put the grass in the world and see what it looks like when you change the scalar value of the material instance.
Do something like wpo / scalar (set to 2560) and mask RG. Use the output as the UV.
Put the grass in the world and see what it looks like when you change the scalar value of the material instance.