Object ID passes?

[cyphyr]

Is there any way I can set up a render Layers node to output an Object ID pass for use in a compositor?

The only way I can think of is to set up an entirely new scene with a single colour for each object and output in render layers Surface diffuse colours (before lighting).

Is there another solution ?

Cheers

Richard

[Matt]

I don't know of a better solution yet. There's still a need for a proper object ID render element.

Matt

[cyphyr]

Thanks, it's never come up before and I thought it would be worth while checking first. Objects render very quick so it's not a huge issue.
Just wanted to check on methodology.
Cheers
Richard