Project 3: Xincheng Zhang

[XinCastle]

Finish coding but still working on one more extra. Will add changes and readme file later. I will really appreciate it if you don't count it as late submission. Thank you very much. I

Repo Link: https://github.com/XinCastle/Project3-CUDA-Path-Tracer penkey: xincz Features: 1. perfectly specular-reflective

2. first bounce intersection cache
3. Frensel effects
4. DOF
5. Antialiasing
6. Motion blur