We have a dedicated physically-based phase function that controls how light is scattered when reaching cloth fibers. With just four PBR parameters like Scattering, Narrowness, Roughness and Compactness we can fully control fibers scattering and how fibers will end up appearing while rendered. This gives a natural, easy and powerful setup to bring clothes to life ...
We can still use them but bitmap textures are not required as we implemented a true fibers model able to mimic smooth to rough fabric breaking down the yarn pattern to mimic natural fabric roughness. Without this the yarn pattern would be almost perfect without one single fiber going in a different direction than any other. With this instead we can easily model fibers outliers ...
Getting a base pattern and then just put on top of that your own texture is common practice. For example almost all basic t-shirts have the same underlying weaving pattern but then have different prints and/or different colors. With this we can have our custom fabrics still supporting the fiber scattering model to physically approach our clothes ...
With a yarn-based dedicated cloth shader we can easily control and render a wide range of cloth appearances from silk to cottons, from synthetic fibers to shantung, from smooth to rough fabric; ideal for clothes but also for industrial fabrics employed for curtains and sofas etc ...
We fully support WIF files which is the standard for sharing weaving files among different weaving programs. You ain't forced to go all weaving to model everything with yarn patterns. However it's also true that handweaving and patterns themshelves are a secret art and you may just fall in love with that. If that's the case, you have full support for custom WIF files ...
With our cloth shader we provide finer controls than a general PBR approach. That means that while the shader is fully PBR aware, we have added controls that better suite a cloth shader. For example we can control GI vs Speculars to better model fabric reflectivity. Fiber opacity can be influenced by the weaving pattern for increased realism etc ...