How do I get the mask/alpha of a texture in Vray without rendering a pass?

[GidPDX]

Just wondering if there is an easy way to get the mask/alpha of a texture in Vray on the initial pass that doesn't effect the actual render?

In MODO there are a few ways, like setting the image to alpha only, effect to driver A and then the render output in the same group to driver A as well. This doesn't effect the actual render at all, and doesn't even require a material.

I use this for silkscreens on devices, labels on bottles etc. to get masks of the textures.

What's the work flow in Vray?

[vladimir.nedev]

Can you show me an example of how this looks likes, rendered in MODO ?

Greetings,
Vladimir Nedev

[GidPDX]

Hi Vladimir - here are some links to a video showing how I'm using driver A in modo to get the mask, and links to the scene file and graphic.

https://www.dropbox.com/s/grwn7r5gwn...r%20A.mp4?dl=0

https://www.dropbox.com/s/2hgmw66hw2...ry-01.png?dl=0

https://www.dropbox.com/s/nz8hqozc3n...y_R1a.lxo?dl=0

Thanks for checking this out!