Indirect illumination using Custom Photon Mapping

Build from source and run the program

• cmake . && make. This should produce an executable ray-tracer.

Example arguments

• ./ray-tracer -input data/scene/cornell.txt -output render.bmp -size 800 600 -shadows -rBounces 10 -pBounces 10 -photons 50000 -nearest 10

What kind of arguments (if any) that you program needs?

• The program takes in some necessary arguments and some optional.

  Usage: ./ray-tracer -input <INPUT_SCENE> -output <OUTPUT_IMG> -size <WIDTH> <HEIGHT> ...
  

  Argument	Description
  -input <INPUT_SCENE>	Takes in text file that describes the scene to be rendered
  -output <OUTPUT_IMG>	Takes in the filename that the rendered image will be saved as
  -size	takes in width and height integers describing the dimensions of the image
  -normals <NORMAL_IMG>	Takes in filename to save normals for visualization, mainly for debugging (optional)
  -gamma	Takes in a float that is used for gamma correction (optional)
  -blinn	A toggle to use Blinn-Phong specular shading instead (optional)
  -shadows	A toggle to render with shadows (optional)
  -aa	A toggle to render with anti-aliasing (optional)
  -secRays	(int) The number of secondary rays in the Monte Carlo tracer (default: 5)
  -rBounces	(int) The maximum number of bounces for the Monte Carlo tracer (default: 3)
  -pBounces	(int) The maximum number of bounces for the photon tracer (default: 3)
  -photons	(int) The number of photons to fire (default: 10000)
  -nearest	(int) The number of nearest neighbors for the kd-tree search (default: 5)