Bidirectional Path Tracing using Nvidia Optix , Part 6 (Correct Refractions)

My last accomplishment on my way to create this renderer is the correction of the refractive materials.

In the following pictures, the material of the ball is totally refractive so it is not to be mistaken for real-world glass for example. In the last picture , the refractive material is exaggerated to highlight the appearance of colored caustics

At the moment I am creating an xml scene loader for easy scene parameter and geometry  loading.