1. Caustic Ray Tracing CSS552
Steve Dame
Aysun Simitci
Sabitha Abraham

2. PL 7 ^ -L 1 3 ^ Pe Image Plane 6 4 FOV Ps ^ V 5 Photon Map 2
Caustic Ray Tracing PL 7
Compute Phong Illumination where Lc is the photon map light cell intensity. -L ^ 1
Compute Caustic Ray Point Map 3
Shoot Caustic Rays UP ^
(ray = PS – PL) Pe
Image Plane
Accumulate Photon “hits” 6 N ^ θ0 w ^ u ^
Intersect & Compute
First Refraction 4
FOV Φ0 Ps V ^ N ^ Φ1 θ1 5
Intersect & Compute Second Refraction
Photon Map
Create Photon Density Array 2
11/29/2018

3. Without photon mapping

4. With photon mapping and Caustic effect

6. Caustic tool with 7 rays

7. Caustic tool with 77 rays