glass alpha using vrayMtlWrapper and VrayMtl

[andrewjohn81]

I'm looking out a window and looking at the background. I see the reflections inside the room int the glass.

At Alpha contribution of 1.0, of course, the material is completely white in alpha.

At 0 it is as if the window doesn't exist at all, but you can see the reflections for it (this doesn't help me at all in AfterEffects).

At -1, what I thought it was suppose to be, I get a complete blocking effect. I can't see anything behind the windows in the alpha, but I also can't see the reflections.


Any advice? I am still utterly confused as to how to use the alpha contribution to work how I think it should.

I don't understand why my reflections aren't seeming to affect the alpha at all.



-yes I have searched through many posts....I just didn't find any that helped me.

[jacksc02]

do you have affect alpha checked in your material?

[andrewjohn81]

that was it.

I'm still not getting what I was hoping for, but that'll have to do.

[jacksc02]

post some images up of the alpha or email them to me so I can have a look at the issue