pyro shader Passes!! Help!!

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Hi all advances!!
I just try my own pass with pyro preset shader.
I got some issues!
which pass I use from mantra rop properties preset, like P, Pz..
give me the wrong pass.
the passes looks like with big voxel size,
those voxel size is not match the color pass.
Thanks all !!

Attachments:
color.jpg (153.9 KB)
Pz.jpg (128.5 KB)
P.jpg (116.8 KB)

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Your color pass is taking opacity into account where as the P and Pz are returning the depth values at each voxel regardless of its alpha.

As far as i know, you cant get volume depth this way, one way iv seen is to ramp the densities color through multiple colors based on distance from camera and render that out. Then base you're de-focus or what ever post operation you need, on color values.
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nikmolson thanks!
I will try it later!
may I ask some question for you?
how many passes do you work with of smoke, fire, cloud..etc?
Thanks!
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Im no compositor so on any personal work iv done i kept it pretty simple. But at work as far as i recall they usually like to have the beauty as well as passes for heat, noise and the depth hack i mentioned above.
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