Houdini | Penrose triangle | Modeling and render elements

Modeling the Penrose triangle optical illusion and rendering the necessary compositing elements in Houdini.
Scene File: http://jmp.sh/njQ2tZy

Round Penrose triangle. 3D Model.

Portion UV pass, with Alpha, to be triplicated and rotated. Texture mapped through UV values. Shading pass to give the object a notion of volume.