Varying Material parameter per instance

[tomhanks]

Is it possible to vary a material attribute per instance?

I am using point instance, I've created a grid to generate some points and the same points have random attribute values that vary from 0 to 1, my instance objects are boxes with a constant shader, I want each box material color get the values from those points.

How can I do that?

[MrGAG]

Hi,

I think you can wire a material Sop to the points in your instance node.

It will allow you to override any parameter of your material per instance.

I think that's what you need.

[MrGAG]

by the way , it can be a litle tricky,

make sure :

- you choosed point attributes in the drop down menu on top

- you checked 'override uses local variables'

then you just have to pîck the material you want to play with, and choose a parameter to override.

[tomhanks]

Thanks for the reply.

What I tried to do was on this material node was to use the "point" function to get the colors from the grid points, but the result was the same value for all the instances.

[symek]

Thanks for the reply.

What I tried to do was on this material node was to use the "point" function to get the colors from the grid points, but the result was the same value for all the instances.

See the example.

cheers,

skk.

instance_example.zip

[tomhanks]

That´s it!!!

The key I was missing is that all the overrides and properties to be override must to be on the object level, thanks for all your support finally I could see that.

Thank you very much for the example Symek, and thanks everybody for the feedback, again , it was really helpful this forum is really great.

See ya!

Edited October 17, 2009 by tomhanks