Interaction using gaze tracking with Unity3D and Tobii 4C eye-trackers for Windows desktop

● This Unity project enables interaction with gaze tracking using Tobii 4C eye trackers.
● The vertex/fragment shaders adds directional light, spot light, casts and receives shadows in the scene.
● The circle rendered around the gaze position could be implemented in the shaders using two ways and works both ways :
1. Using grab pass technique
2. Using post processing technique