Users can now download more than 290 materials for free.
AMD launched a free MaterialX-based Material Library. It allows users to download the materials and encourages them to upload their own.
"MaterialX is an open standard for representing rich material and look-development content in computer graphics, enabling its platform-independent description and exchange across applications and renderers."
Several major companies have contributed to its development starting from its release as open source in 2017. Having started as a collaboration between Industrial Light & Magic and the Lucasfilm Advanced Development Group, with contributions from Autodesk, Pixar, The Foundry, and the Open Shading Language team, MaterialX is now supported by Adobe, NVIDIA, and other companies.
If you'd like to use it, Arnold has a MaterialX Operator node, which works in all DCCs that Arnold supports. Moreover, Lucasfilm and Pixar are working on full compatibility between MaterialX and USD.
You can also use it in Substance 3D Designer via a plug-in.
Currently, the library offers over 290 materials, such as walls, fabrics, metal, stone, concrete, wood, flooring, roofing, and more. The materials are also divided into collections, including forest and mountain environments, modern and medieval interiors, and urban exteriors.