[tpxl]

There's a node system in Blender?

[vsareto]

Yep, shader nodes

https://docs.blender.org/manual/en/latest/render/shader_node...

[dynamite-ready]

Yes. The official node system can be used to script materials/shaders, image compositing, and there are a few excellent plugins to make it stretch to procedural modelling.

[imtringued]

You can use it to procedurally generate textures in Blender