Render Vray elements without calculating RGB?

[Steve Davy]

Is there any method of rendering out render elements from Vray without necessarily calculating the RGB?

I know most passes are reliant on the RGB, but I'm thinking specifically about those that aren't, e.g. velocity, depth, and any special extra tex passes, that type of thing.

I really like the tidy way that the render elements system allows you to output everything at once, but there are sometimes situations where I want to re-render just my depth, just my velocity etc. and not have to wait for a redundant RGB pass to calculate.

[William Jeffers]

In your render settings Vray tab you have Global options - advanced. Here you can turn off all the expensive effects (glossy stuff, maps, SSS) that way you can quickly get a setup that will render way quicker for tech passes. You can also check ''dont save RGB channel'' in the Vray common tab - that way Vray will only save your render elements and not the RGB.

Cheers! Will

[David Loh]

You could just set up another "tech" render layer with those passes...