Jump to content

Color channel of the Redshift material volume node issue...


Masoud

Recommended Posts

Hi guys,

I would like to use the color channel of the Redshift's material volume node.

1) I created a vector point attribute called "absorption".

2) I added this attribute's name to the "Volume Rasterize Attribute", attributes list, to create a volume called "absorption"

3) In the "volume source" node of my pyro DOP, I added "absorption" as the source and target field (as vector type).

4) I add a "VDB vector merge" node before my pyro material node.

5) In the RS Volume material, I add "absorption name into the color channel.

 

But it doesn't work..! How can I fix it?

 

Thanks for helping.

Absorption_01.hip

Absorption.jpg

Link to comment
Share on other sites

What I do know is that the channel works the way you use it. Just enter the name of a volume that works to try.
If you enter density, heat or temperature, which obviously must be present after the VDB conversion you will see that it works fine.
Now I'm not really a pyro user. Just my two pence guess : I don't see where in the DOP network, the absorption volume is processed by the pyro solver.
Maybe it's just that all the values are zero.
In my opinion this is where you should look.

 

Edited by flcc
Link to comment
Share on other sites

Hello, 

Like Fred suggested, your absorption vector attribute has 0 values, hence why it's not showing anything.

Give the absorption attribute a value like {1,0,0} then use the Dop I/O node to import the volume fields including the absorption. You should then be able to see it working. ^_^

 

image.thumb.png.0a1a12d64d039dd657e998225d2b4363.png

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...