Adding secondary rays and complex illumination methods to volumetric rendering

[mwestphal (Mathieu Westphal (Kitware))]

@gthev

one of these methods will maybe be integrated into VTK’s mapper, it is important to us to ask for your opinion on this.

You are reffering to Hybrid, Stochastic and such, is that correct ?

Why not adding all methods? Or at least keeping the door open for the different methods if it makes sense ?