Tags :SGI

Performer came about in 1991 when a group from SGI\’s Open Inventor project, then known as IRIS Inventor, decided to focus on performance rather than ease of programmability. Whereas Inventor delivered easy-to-use objects and various UI elements to interact with them, Performer focused on a scene graph system that could be re-arranged on the fly for performance reasons, allowing the various passes of a rendering task to be performed in parallel in multiple threads. Performer allowed the scene to describe levels of detail with hysteresis bands and fade capabilities. Frame rate and statistics were monitored and a \’stress\’ factor was calculated. This could be used to further weight the level of detail in the scene eliminating detail to maintain a...