RayTracingManual
include Whitted and MonteCarloPathTracing TODO: RealTimeRayTracing
final code 2022/05/17 but there's many bug to fix ,only for practice
ref:
https://sites.cs.ucsb.edu/~lingqi/teaching/games101.html
https://blog.csdn.net/qq_38065509/category_9873936.html
https://learnopengl-cn.github.io/
https://chengkehan.github.io/HemisphericalCoordinates.html
https://blog.csdn.net/u010281174/article/details/109123974
thanks all authors above on