A matte (alpha) problem.

[Pongo]

I have a question involving matte objects rendered with VRay. Here is an image to illustrate what I am trying to ask.



Each image is shown with it's alpha.

1. is a default VRay render
2. the sphere has been made a matte object in VRay properties
3. Same as #2, plus matte alpha has been dropped to 0
4. Scanline render with matte material applied to sphere.

My question is,... Is there any way to get VRay to render the matte(alpha) from #4? Currently my only solution is to render this matte pass with the scanline render.

Thanks

[Greg3D]

Change Matte alpha to -1

[Pongo]

Thank you!

Didn't realise I could go below 0,... this opens up a few new ideas.