Full support of Nvidia Material Definition Language (.MDL) and Appearance eXchange Format (.AXF)
Please support Nvidia MDL for all rendering material definitions : https://www.nvidia.com/en-us/design-visualization/technologies/material-definition-language/
Also the AXF format would be useful: https://www.xrite.com/axf
Ideally, it would be compatible with both OptiX and OSPRay.