Trouble with volume passes

[amination]

Hello!

 

I'm actually starting to work with volumes in Houdini recently, which makes me a bit new with them. It seems that I do not get anything from smoke_mask and fire_mask passes when I render out in default mode. Would anyone know why is this happening? I did change my Houdini version and still getting the same result.

 

Thank you in advance.

[dobin]

make sure vex type is set to float in your AOV passes

[amination]

Interestingly, I've also noticed my Normal pass won't show anything either, and my zDepth, Position, and Direct Volume passes are all Pixelated/voxelized.

[dobin]

you can't get Normal, Depth and Position passes for volumes.

if you want more passes to play with in comp you can export every field from your dop import node like temperature, heat, fuel, etc...

if you need a depth in comp then you shoud render in a deep image format.

[amination]

Here are 2 related topics I found explaining about rendering out extra passes (http://forums.odforce.net/topic/14661-normal-passes-on-volume-renders/?hl=%2Bpyro+%2Bpasses , http://forums.odforce.net/topic/14894-passes-for-volumes/?hl=%2Bpyro+%2Bpasses). I just render out Normal pass and it looks fine, Zdepth and P also worked in default only needs to be render out in deep image comp as you've mentioned and needs to be tweeked a bit to adjust the correct responding.

 

Thank you for replying