Reply To: “Noise Texture” and 4D “warping”

Well, this 4D is not spooky at all, when you do not try to visualize it.

Math to the rescue: a 1D Noise Texture is just a function with one variable (standard noise is just a combination of sines and cosines).

It only changes when you change one value (in Blender this one variable is called W, but you can just plug in anything, time, or the X-axis, for instance):

So a 3D Noise Texture is a function with 3 variables and a 4D Noise Texture is a function with 4 variables (what meaning you give to each of those variables is up to you, just don’t try to think about this as spatial dimensions or a space-time continuum or so). More complicated to compute, but that work is being done for us, so what is left is not more difficult than a 3D Texture. Or a 5D Texture, or….