• tuned for specular and transparent objects
• global illumination for specular light
• partly physics-based: geometric optics

Ray tracing tree

  raytrace( ray )
     o find closest intersection
     o cast shadow ray, calculate colour_local
     o colour_reflect = raytrace( reflected_ray )
     o colour_refract = raytrace( refracted_ray )
     o colour = k1*colour_local + k2*colour_reflect + k3*colour_refract
     o return( colour )

Comments

• computationally expensive
• avoid intersection calculations
• optimize intersection calculations
• many other optimizations
• antialiasing
• distributed ray tracing
• shadow penumbra
• depth of field
• motion blur
• antialiasing

Hosted by Graphics & Media Lab http://graphics.cs.msu.su

mailto: Laboratory