Fractal Warp Shader's new "scale filter" logarithmically scales the maximum feature scale of the fractal. A value of 1 allows warping at all scales. A value of 0.5 filters out scales greater than 1 thousandth of the main scale parameter. A value of 0 filters out scales greater than 1 millionth of the main scale parameter.
Basically, it's a great way to vary the scale of the patterns using other shaders. Because it "filters" the patterns, rather than scaling the texture space, it doesn't have any of the distortion problems that you might see if you try to vary the scale of the noise function nodes such as Perlin, Voronoi etc. I also decided to make it a logarithmic scale because I think that makes it easier to use this capability to affect the appearance of a surface.
Ulco, you should try it.
