1. RAY TRACING WITH DISPERSION
CSS552 – Topics in Rendering Winter 2011
Final Project by: Kohei Ueda Shivani Srikanteshwara Mary Ann Chiramattel Kunjachan

2. Initialization Phase
Original Light
(White)
Material
Index of Refraction
For each wavelength (color) θi
Each ray from the white light will hit the refractive surface

3. Initialization Phase Creates New Dispersive Light Source
Origin (position)
Direction (θo)
Color
Original Light
(White) θi θo
Each white light ray that hits the refractive surface will
be refracted in to different directions.

4. Initialization Phase Light Sources Origin (position) Direction Color
Original Light
(White) θi
Photon Map
Color values from each Dispersive Light ray will be stored here. θo
Screen

5. During Ray Tracing Refractive Object Photon Map Screen
Directional Lights
Refractive Object
Photon Map
Screen
GetColor(at Intersection pt.)

6. Final Image
View Point
Refractive Surface
Screen