Interactive Approximate Rendering (IAR) is a method to implement interactive reflection, refraction and caustics.
OpenGL and Cg are used to implement the method on GeForce 6800 Graphics card. We can render this image 18 times in one second. The resolution of this image is 512*512.
For more information and results, you can visit the project home page at http://appsrv.cse.cu.../iar/index.html