Mike Stark
Homework #7
Direct Lighting of the "Cornell Box"
Okay, I managed to kludge this together. This image uses nine samples
per pixel, and 16 per shadow ray. I tried an adaptive method, but it
didn't look like it was ever going to finish. (I also fudged the
luminance, by a single constant factor to brighten it up a bit. I
don't think my matrix is quite right anyway.)