OptiX advanced samples on github

A new example has been added to the OptiX Advanced Examples:

The GLTF_renderer example shows how to implement a viewer application for the Khronos glTF 2.0 file format.

It’s implementing a renderer supporting the glTF 2.0 Physically Based Rendering (PBR) material and additional glTF 2.0 extensions in a global illumination uni-directional path tracer.

Please read the README.md inside its doc folder for more information.