Packing inputs value into MF and unpack it in output

[pawel.karbarz]

Hi,

I hope the subject is correct related to my problem.
Let me explain what I’ve got right now.
I’ve got a Material function and I need used it 4 times in my scene. Let’s say I’ve got one input parameter call “Speed” which is different for each. I don’t want duplicate MF 4 times and setup speed for each by using float. What I want to do is:

• Setup a 4Vector parameter with all speed value what I want.
• Add this node to my MF as an input
• Receive different speed at output in separate channels (RGBA)

I hope I explain this in right way. Thank you for any help.

[3dRaven]

What is the internal logic of the material function?
Just use a vec4 as the input of the material function in that case, then spit it into it’s components.
Do the calculations on the parts and make a float4 output.

Then you can use it like this

or pass in a make float 4 param to the input.

[pawel.karbarz]

Thank you for your answer.
This is what I try at first but the problem is inside my material function I’m using custom code. The speed material looks like this

Input * time - this is connected to custom node as a “speed”
Bunch of code
Output

I’ve got few inputs and the code which calculate all of them and send one output.
My problem is how can I take values from all the input just from R channel but output result in 4 channels (RGBA), next I would like to take just a G channel and output different values to RGBA, etc…

[3dRaven]

Just add more output nodes in the material function

And the implementation with breaks:

[pawel.karbarz]

Sorry for delay respond.

I’m marking this as a solution because this should worked in most of the problems like that. In my case I have add one more step: changed a some part of code to read parameters from separate channels, before code was reading just from scalar value and do it once.
Thanks for helping me!