---
title: "Pref in Solaris"
canonical: "https://rmanwiki-27.pixar.com/space/RFH27/544642213/Pref%20in%20Solaris"
format: markdown
---
![image](media://894d5a26-931e-4500-a065-c652822738b9)


When rendering it's usually required that you set a default pose or position for your object to become a reference for later renders even if the object deforms or moves around. This is to prevent "swimming" or a texture effect from appearing to slide across the object as it animates. It's typically referred to by its technical name of Pref.  
  


In Houdini / Solaris, first add a Rest node to set your default pose

In your Solaris network, add a *copyproperty* node and set as per the image below.

> Macro (inline-media-image)

  
  
  
  
Add a __Pref AOV from the *rendermanrendersettings* node under *Render Vars (AOVs)* → *Integrator*  
  
> Macro (inline-media-image)

  
  


Fire off a viewport or disk render and in the AOV display, you will now see the _Pref AOV

![image](media://e0bbb6a6-dfb0-4649-8b9d-f32cda5dd6d3)


From here your renders should use the default position and shape set by the Rest node.