I just have a question, you made a hint in the manual that it could be possible for us to add our own materials to the system, I am trying to figure out how to do a glass texture, I have tried the _mtlC_Standard_t to try to get a semi transparent look to the glass, but to no effect...I was wondering if someone could point me the right direction to do this, either add my own glass shader to this or the way to work with it as is...