I have a Solaris Scene, with a Material Library, and i want to shade my geometry based on the position of the points. For Arnold i can use user_data_rgb to read vector attributes like DisplayColor. But i cant acces the P attribute. Why is that, and what do i do about it? As i understood, the desired data is now stored in the primitive "points" because of solaris, is that right?

I would be super grateful for help, im kinda stuck and it seems like a super simple thing to do /: