VRAYforC4D support Native C4D Materials. Also it supports almost all native Cinema 4d shaders, for most aspects there are texture channels to control the material slots.

In all texture channel slots of the VRAY material you can use the c4d shaders from cinema4d, only very few like the proximal shader are not yet supported.

VRAYforC4D support 99% of the c4d shaders like noise, lumas, c4d fresnel, falloff, filter, layer, projection, distorter, fusion, colorizer,gradients, most effect shaders like spline shader, SSS (partly supported), Ambient occlusion, all surface shaders like tiles, water, wood, special shaders for mograph, etc…