No transparency on render Passes.

hello
i’m having a hard time putting an alpha channel on render passes.
i use the output node on the compositor to seperate each pass on a diiferent file i used png.RGBA. 8 or 16 .
the only turn around that i found was to use a “use alpha” node on each output by pulgin the render layer alpha.
on each output node.that gives me alpha channel of the global scene on each pass.(but that’s not exactly what i want)
i used to use softimage render passes.and what a pass directly gives you out of the box.was directly right
next to the button to activate it the path were you want the pass to be wriiten.and it gives you everthing
but what you want in that pass in transparency(straight unmatted alpha).for exemple a shadow pass.
is shadow only with transparency.
in the setting i chechek transparent film i desactivated the world bakground.i have transparency on the composited
full render but not on render passes.

thanks for any help.

Show something rather than having to interpret all that text.

Please supply:

  • Annotated screenshots showing what you have and what you want
  • Example blend file


Here you go