Tim Purcell
CS 684 Homework 7
Direct Lighting

The equation for the luminance (L) at any point in the scene is given by:



In the above equation, x and y are points on the scene and an object respectively
s is a function which returns 0 if point x is shadowed, 1 if not
R returns the reflectance of point x in the scene
cos(theta) is the dot product between the object normal and the light direction
cos(phi) is the dot product between the light normal and the light direction
(y-x)^2 is the distance squared between points x and y

All images were sampled using multi-jittered sampling on the objects and random sampling on the light.

1 sample/pixel	9 samples/pixel
64 samples/pixel	256 samples/pixel

Axis aligned boxes - my wimplification of the Cornell box

16 samples/pixel, A=8	16 samples/pixel, A=10
64 samples/pixel, A=10	256 samples/pixel, A=10