Autodesk Alias 2011 Essentials - Ambient Occlusion
In Autodesk Alias 2011, users will now be prompted to orient all surfaces to face the same way before starting a calculation. Because setting up the occlusion is a very time-consuming calculation, this new feature will help to alleviate the extra work that resulted in past releases when users forgot to set the normal direction before starting their ambient occlusion calculations.