"An Approximate Image-Space Approach to Interactive Refraction"
              Chris Wyman, The University of Iowa

Running the demo:
-----------------

Unzip the package, goto the "\bin" directiory, run the executable 
"approxISRefraction.exe"

For help with key commands, "h" displays help text on screen.



Demo requirements:
------------------

A graphics card and driver able to handle the following extensions:
     GL_ARB_VERTEX_PROGRAM
     GL_ARB_FRAGMENT_PROGRAM
     GL_NV_FRAGMENT_PROGRAM2
     GL_EXT_FRAMEBUFFER_OBJECT

(Our development machine had an AGP GeForce 6800 with 128 MB memory and
a beta nVidia driver, version 76.44, supporting GL_EXT_FRAMEBUFFER_OBJECT)

Requires the GLUT utility toolkit (DLL included), full package available
from http://www.opengl.org/resources/libraries/glut.html

Requires the GLEW 1.3.2 OpenGL Extension library (DLL included), full package
available from http://glew.sourceforge.net

Requires nVidia's CG library, release 1.3 (DLLs included), full pacakage
available from http://developer.nvidia.com/page/tools.html



Acknowledgements:
-----------------

Lightprobes from Paul Debevec (http://www.debevec.org/Probes/)

Models from:
   The Stanford 3D Repository (http://graphics.stanford.edu/data/3Dscanrep/)
   Hugues Hoppe (ftp://ftp.research.microsoft.com/users/hhoppe/data/sphereparam/)

Simplifications (of the Dragon) by:
   QSlim (http://graphics.cs.uiuc.edu/~garland/software/qslim.html)