This page provides details on the settings available for the OSL Material in V-Ray.
Overview
Parameters
OSL Source – Specifies whether the OSL shader code is inserted inline or loaded through a file.
Inline OSL – The OSL shader code is inserted inline.
File path (.oso/.osl) – The OSL shader code is loaded through a file.
Path to .oso/.osl file – Specifies the path to the OSL shader code file.
References
OSL home page at SPI - Open Shading Language home page at Sony Pictures Imageworks
OSL Google Code page - Google Code project page for Open Shading Language
OSL GitHub page - GitHub project page for Open Shading Language