I present to your attention the plug-in
V-RayMtl Converter 3
This plugin is designed to automate such a time-consuming process as converting various types of materials (currently supported: Standard, Raytrace, Autodesk Material, Architectural, mrArch & Design, Corona Renderer, NVIDIA iray (unofficial), fr-Advanced, Brazil Advanced) to V-Ray materials, as well as for reverse conversion from V-Ray materials to Standard (scanline).
V-RayMtl Converter 3 is a new version of the script known as VRayMtlConverter. This version is the next generation after version 2.5 and in comparison with the previous version there were new features and improvements: support for more materials, maps and other components of the scene, additional choice of materials for conversion, as well as more flexible options for transforming and fixing the scene and its components.
Replies
Curious about conversions to Physical Material in particular, since we're interested in converting complex V-Ray materials to the glTF pipeline.
https://doc.babylonjs.com/resources/3dsmax_to_gltf#conversion-standard-to-pbr-materials