Maya 2010 comes pakaged with Mental Ray 3.7.53
This version of Mental Ray have a really cool new feature called the Progressive Rendering.
This feature is not yet implemented in Maya 2010, but fortunatly for us Autodesk designed the string options.
With the string options, you can add any Mental Ray options and set it's value then Maya will pass this information to Mental Ray enabling the Mental ray feature! This is great because Maya users don't have to wait for Autodesk to implement new Mental Ray features.
Of course using the string options are not very user friendly ... that's why I have create this script to add the string options to enable Mental Ray's Progressive Rendering.
You can download the script here.
Install the script an execute it ...
This little window will appear, enable the Progressive Rendering and start a render or an IPR!
Adjust any of the options from this window instead of having to edit string options manually.
The Progressive Rendering works like a charm in IPR, tweak your lights and material faster than before!