arnold vdb - volumeSampleFloat remap with float ramp

[s.des...@gmail.com]

Hello,

I'm trying to do a remap of a vdb with a ramp and a volumeSampleFloat

In maya, to make it work, I just have to connect the outValue of the volumeSampleFloat inside the U of the float ramp and that's it.

I have problems doing it in gaffer. the Arnold float ramp node is not really usable and I'm a bit lost with OSL node. I see example of custom ramp node but I can't make it work.

Is someone can create a example scene with a volumeSampleNode connected to the U of a float ramp.

Thx a lot,

Seb

[Heribert Raab]

yeah its confusing..... only colorspline node works with arnold (its also a ramp node)

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[s.des...@gmail.com]

Do you have an example of an aiVolumeSampleFloat controlling a vdb density through a ramp ?

I can't make it work

Thx,

[Murray Stevenson]

Hey Seb,

I've attached a script with a couple of examples of using the oslFloatSpline to control volume density. Hope this clarifies a few things for you.

Cheers,

Murray