pathtracer-notes.txt

Scene
  list of Objects

Object
  Mesh
  Material

Material
  BRDF
  Color
  Emissivity
  
Mesh
  transform matrix
  buffers
    vertex array
    normal array
    index array

Camera
  center
  position
  up

Ray

Intersection - result of intersection test
  position
  normal
  id - for object or material

Film - image buffer
  HDR buffer



for each bounce:
  unaccumulated color = unaccumulated color * BRDF * color
  accumulated color = accumulated color + unaccumulated color * emittance

radiance = emittance + (BRDF * mat_color * incident light)