I developed a plugin for Houdini - COPstance [copsubstance.com], that adds some most powerful Substance Designer atomic nodes to Houdini in COP2 context. For now, there are 24 nodes in Substance menu: Arc Pavement, Blend, Channels Shuffle, Cube 3D, Directional Warp, Distance, Emboss, Fluid, FX-Map, Gradient (Dynamic), Gradient Map, Grayscale Conversion, Levels, Normal, Seamless Noise, Shape Mapper, Simple Perlin, Slope Blur, Splatter, Splatter Circular, Tile, Tile Generator, Transform 2D, Warp.

And 16 nodes in Substance Patterns menu: Checker 1, Fibers 1, Fibers 2, Gaussian 1, Gaussian 2, Gradient Linear 1, Gradient Linear 2, Gradient Linear 3, Liquid, Mesh 1, Mesh 2, Shape, Waveform 1, Weave 1, Weave 2, Weave Generator.

All nodes have the same specific parameters as nodes in Substance Designer. All nodes work almost identically to nodes in Substance Designer.

Node FX-Map has some specifics in work. The nodes inside the FX-Map in Substance Designer work in such a way that multiple outputs can be connected to one input and each output can have only one connection to the input. That is, the outputs act as inputs, and the inputs act as outputs. Therefore, the nodes inside the FX-Map node in COP Substance must connect from right to left. That is, the root node is on the right, and the entire hierarchy goes to the left.

For now, there are support only Windows versions of Houdini 17.0, 17.5, 18.0, 18.5 and 19.0.