Reality Lab was a 3D computer graphics API created by RenderMorphics to provide a standardized interface for writing games.
It was one of the main contenders in the realtime 3D middleware marketplace at the time, alongside Criterion Software's RenderWare and Argonaut Software's BRender.
[1] Reality Lab was a scene graph API providing real-time rendering that would run with acceptable performance on graphics cards or the host computer's CPU.
[1] Founded in 1992 by Servan Keondjian, Doug Rabson and Kate Seekings, RenderMorphics was purchased by Microsoft in February 1995[2] and Reality Lab formed the basis for Direct3D.
[3] Microsoft's acquisition statement of RenderMorphics contained a description of Reality Lab: RenderMorphics' flagship product, Reality Lab(TM), provides high-performance 3-D graphics technology for a variety of personal computer-based games and multimedia applications.