You can use this script to create black and white matte renders using mentalray's pass system which means that it takes no longer to render 100 mattes than it does to render one. And since the script makes it so easy to set up these passes you can render a separate matte for every object in your scene, if thats what you want, or for combinations of objects that you select or based on the materials that are assigned. (more...)
In preparation for upgrading to maya 2011, I'm recompiling plugins that I rely on. This one, called spReticle, required a small code fix to work with 2011.
spReticle is an open source offering from Sony Pictures Imageworks that gives you the ability to add customizable viewport overlays like gate masks and safe guides and much more.
You can get it from my downloads page.
Put the plugin (mll file) in your plugins folder and the mel files in your scripts folder. Use the plugin manager to load the plugin, then to create a reticle node use the following command:
This will set up a reticle with a 16:9 transparent gate mask with 4:3 center-cut action/title safe lines, frame numbers in the top left corner, scene name top center. You can modify all these to you liking and add many variations using the attribute editor.
update: 9 April 2011: maya 2012-x64 version also available
update: added 2013-x64 version