Alpha pass?

[Giovanni]

Hi guys, a simple question:
how do you render the alpha channel ONLY of a Max+Vray scene?

I could not find a quick way to do that. I have to uncheck a bunch of option in the Vray flag panel (reflections, maps, etc), and still I spend a lot of time rendering...


thank you

regards

gio

[Morbid Angel]

easiest way would be to make your own alpha pass. If you dont want to render the entire scene, you can just assign a vray light material as global override and render it that way.

[timmatron]

And if you're not using proxies, it's really easy to switch back to scanline to render out a quick pass.

[simmsimaging]

look for rendermask on www.scriptspot.com Works like a charm for me.

b

[stilgarna]

Hello guys,

Brazil 2 have a nice option that allow you to re-render only one render element ( Specular, diffuse, alpha etc...)

Maybe you could wishlist it... I don't have any idea of the complexity of this operation. I guest Vlado could answer


Best regards...

[Morne]

easiest way would be to make your own alpha pass. If you dont want to render the entire scene, you can just assign a vray light material as global override and render it that way.

Yes, what Morbid Angel said

[jonahhawk]

When you render Alpha only passes you don't need any GI or Glossy effects or any of that stuff save displacement. turn it all off and but a simple material in the override. It will render pretty quickly.

Will the VRayLightMtl work with the GI turned off?

I second the use of the RenderMask Script on scriptspot. It works really well; especially on large scenes where I want to send to our farm in strips. I really wish max would handle Render Elements in strips via BackBurner. So lame.

[glorybound]

Render Mask

http://www.scriptspot.com/3ds-max/rendermask - makes easy work of it!