Hi, I'm new around here and I have two simple question to ask you about the pyro system.

Let's start with the easy one!

smoke_color
I searched how to output different mask and “color” for a pyro render and I found that I can use this image plane:

- fire_mask (float)
- fire_color (vector)
- smoke_mask (float)
- smoke_color (vector)

My questions:
1. are this 4 the only one that exist or are there other usefull imageplane to use with pyro?
2. why in smoke_color I have not only the smoke but also the fire?

zDepth
Is it possible to export a zDepth pass for a pyro simulation?
I tryed with the standard position z but with micropolygon rendering the result is like this one:



and with PBR is VERY noisy: can you tell me what should I do?

I hope you can help me!

rvb3n
Is it possible to export a zDepth pass for a pyro simulation?

Well, I guess it depends on what you want to do? For volumes, z depth is not exactly clearcut, see http://www.sidefx.com/docs/houdini12.5/render/dcm [sidefx.com]

Thank you for your reply!

What I want to do is to have a ZDepth pass to use in Nuke with ZDefocus/ZBlur.

Now I'll read the page you linked!

Can you tell me if I am right? I can use the DCM method only inside Houdini? What if I want to do the composite in Nuke?

DCM's were added to Houdini before OpenEXR 2 came out. From what I hear OpenEXR 2 support is an feature for sure in the next major version of Houdini. In the mean time, I think people have been using a Nuke plugin that uses the HDK to read DCM's e.g. http://code.google.com/p/rat4nuke/ [code.google.com]

Thanks a lot! I'll try to use this and see what can I do! :wink: