Vray "ID Generator Tex" - Transparency effect

[legi008]

EDIT: There is an easy way to do this already written in the Docs, without the need for more than one slot. Simply set the default color to black so that all levels without an ID are transparent and manually set the number of the first slot to 0 (direct). Afterward, you control the transparency through the first slot's color.

Damn ! I didn't saw that we have to set de First Slot to ID 0. It's working !
Thanks a lot !

The last piece would be to ignore Invisible object.

[Joelaff]

Do you need loop through textures turned off as well?

[hermit.crab]

Do you need loop through textures turned off as well?

Yes, otherwise (if you have only one slot), it will be assigned to every transparency level.

[dimitar_panayotov]

The scene should be available on the Docs page.

[legi008]

Thanks, i have downloaded it and that's how I managed to achieve it.
The key was indeed the slot ID set to 0.