EMAIL: gordon@mpgenius.com
NAME: Gordon Griesel
TOPIC: Loneliness
COPYRIGHT: I SUBMIT TO THE STANDARD RAYTRACING COMPETITION COPYRIGHT.
JPGFILE: soliconf.jpg
ZIPFILE: none
TITLE: Solitaire Confinement
COUNTRY: USA
WEBPAGE: www.mpgenius.com

RENDERER USED:
	My own ray tracer written in C, which I developed after reading
	the book Photorealism and Ray Tracing in C, Watkins, Coy, Finlay, 1992.

TOOLS USED:
	TextPad editor
	Paintshop Pro
	pencil and paper
	an old deck of cards

RENDER TIME: 2:39:00

HARDWARE USED: Pentium-III 850 laptop with 544MB

IMAGE DESCRIPTION:
	The king is being held in solitary (or solitaire ha ha) confinement.

DESCRIPTION OF HOW THIS IMAGE WAS CREATED:

	I developed this scene to showcase my new radiosity calculator.

	There are only two light sources in the scene, both outside the cell window.

	All other lit areas are accomplished through radiosity.

	I used a system of radiosity patches which are adaptively sub-divided into smaller
	sub-patches where needed to make the lit surface appear smoother.

	One can easily see the patches in my scene.  A smoother surface will require more
	rendering time which I did not have for this contest entry.  I can produce a
	really nice version of the Cornell Box rather quickly.

	The king and queen texture maps are also covered with radiosity patches.

	Please notice how in areas of higher light gradient, the patches are smaller because
	they have been adaptively sub-divided as the scene was rendered.

	Three passes were made, each pass distributing energy from the 6400 brightest patches.

	Hopefully, my next contest entry will be more detailed and have smoother lighting,
	as I will have some time to refine further my lighting techniques.

	Here are some of the optimization methods used to speed up the radiosity calculations.
		. vertex meshes used across each polygon and shared by patches and sub-patches.
		. backface culling of patches.
		. hidden surface culling of patches.
		. frustrum checks for patch division.
		. layered approach to energy gathering for patch verticies.

	I got most of my ideas for the radiosity C code from the following link.

	http://www.cfxweb.net/~aggrav8d/tutorials/radiosity.html

	Thanks for viewing my image.
	:)