Help,how can i achieve this fraction as the pic show, thanks

Could anybody give me some idea or suggestion about the achievement of this texture?
Is the texture fractal art? It is also similar to mashroom textrue, I wanna to get the logic or the component in GH. Thanks very much.

Probably Reaction Diffusion, is the “simple” solution, but it is closer to a discretization with multiple singularities.

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kind of you, thanks very much, its time to dig into it:grin: