Editing Open Inventor (section)

==Performer==
About a year into the Inventor project, a different philosophy began to emerge. Instead of simply making it easy to write applications on SGI systems, the goal was changed to make it difficult to write slow applications. Members of the Inventor team left to form their own group, which founded the basis of the [[OpenGL Performer]] project. Performer was also based on an internal scene graph, but was allowed to modify it for better speed as it saw fit, even dropping “less important” objects and polygons in order to maintain guaranteed performance levels. Performer also used a number of [[process (computing)|processes]] to run tasks in parallel for added performance, allowing it to be run (in one version) on multiple processors. Unlike Inventor, Performer remained proprietary so that SGI would have the agility to modify the API as needed to keep in step with the latest hardware enhancements.