half transparent Matte Object

hi folks,
is it possible to get a half transparent Matte Object, that occluded particles are still seen? i´d like to render a particle stream floating around an semi transparent column.

cheers cruzifer

You can use the OccludedLayer render element to get the particles that are behind a matte object. Then in your compositing tool of choice, merge the normal render output over the geometry over the OccludedLayer output.

There is no way to get this to work perfectly unfortunately since this is a fundamental problem with the whole, matting/hold-out method.

thanks darcy,
i allready did it the same way you discribed :wink:

cheers cruzifer