Motion-Based Displacement Quality
For moving objects with displacement, you can optimize the displacement approximation depending on how fast the object is moving by setting the Motion-Based Displacement Quality option on the Optimization tab of the mental ray Render Options Property Editor [Properties Reference]. The automatic reduction of displacement detail on moving objects has a significant impact on rendering performance and memory consumption by cutting down on the typically huge amount of tessellation data that gets generated.
The displaced geometry should have a geometry approximation property applied to it and motion blur must be enabled for the render region and/or the render pass. See Defining and Rendering Motion Blur [Lights and Cameras].
Deleting Unconnected Nodes in the Render Tree
By default, all unconnected shader nodes are always left in the render tree for an object. This is often useful for keeping shaders around when you’re trying out different shader connections.
However, if you want to clean up the render tree workspace, you can delete all shader nodes that are not currently connected to the Material node.
To remove all unconnected nodes in the render tree
• Choose the User Tools > Delete Unconnected Nodes command from the render tree’s command bar.
Support for the AAF and MXF formats has been removed.
Autodesk Softimage v.7.5