WIF loader is a companion shader for our romboFabricWoven material.
Because sometimes we may want to use external nodes to further model things, we've added a romboWIFLoader utility that matches romboFabricWoven patterns for increased flexibility in modeling bumps and displacements for example. It can also be used standalone for pattern modelling and general WIF (Weaving Information Files) files loading.
It supports two modes: plain color and specular. Specular is actually also a mini fabric shader with fewer params than FabricWovens and can be used for when we want to model fabrics with external nodes while still relying on the powerful shading model used for fabrics and cloths appearances. Below we're using it for just the specular part while all the rest is a romboDiffusePrincipled.
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