Abstract
While virtual reality and digital games share many core technologies, the programming environments, toolkits, and
workflows for developing games and VR environments are often distinct. VR toolkits designed for applications in
visualization and simulation often have a different feature set or design philosophy than game engines, while popular
game engines often lack support for VR hardware. Extending a game engine to support systems such as the CAVE gives
developers a unified development environment and the ability to easily port projects, but involves challenges beyond just
adding stereo 3D visuals.
In this paper we outline the issues involved in adapting a game engine for use with an immersive display system
including stereoscopy, tracking, and clustering, and present example implementation details using Unity3D. We discuss
application development and workflow approaches including camera management, rendering synchronization, GUI
design, and issues specific to Unity3D, and present examples of projects created for a multi-wall, clustered, stereoscopic
display.
