List Associated Passes for a Layer possible?

[sam.ma...@gmail.com]

I know that it is possible to list all the Layers in a maya scene, and all the (possible) RenderPasses with the following:

print
print
print "ALL Layers:"
AllLayers = cmds.ls(type='renderLayer')
for ThisLayer in AllLayers:
print " " + ThisLayer
print
print "ALL Passes:"
AllPasses = cmds.ls(type='renderPass')
for ThisPass in AllPasses:
print " " + ThisPass

However, I'm looking for a method for show the Layer to which a Pass is associated (in maya, the Associated Passes for each layer). Something that I can then display as of:

FirstLayer
FirstPass
SecondPass
ThirdPass
SecondLayer
FirstPass
SecondPass

Is there a method of showing this association?

[Justin Israel]

Try this out. They are represented as connections:

for layer in cmds.ls(type="renderLayer"):

    print layer

    src = "%s.renderPass" % layer

    r_passes = cmds.listConnections(src, s=False, d=True, plugs=True, type="renderPass")

    if not r_passes:

        continue

    for r_pass in r_passes:

        name = r_pass.split('.', 1)[0]

        print "\t", name

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