Better iray water conversion

[Bercraft]

I did some testing rendering water, while with the reality plugin was possible to set glass architectural material and so render i ray water, now i can' t. I tried editing the the scn file to use the archglass material https://wiki.luxcorerender.org/LuxCore_SDL_Reference_Manual_v2.5#Type:_archglass.

Could you implement this feature thank you.

Here examples:

Iray

LuxPlugin

[danielbui78]

Thanks! I'll definitely put this on the todo list!