@techreport { ref14,
	title            = "Integrating an Open Source Game Engine Into a Virtual Reality Application Framework",
	year             = "2005",
	author           = "Anton Treskunov and Jarrell Pair",
	institution      = "Institute for Creative Technologies technical report",
	url              = "http://www.treskunov.net/anton/publications/VRST05_final_treskunov_pair.pdf",
	abstract         = "Increasingly, 3D game engine technology is being utilized in the
virtual reality community. Game engines enable researchers and
developers to quickly author scenes and easily exploit the rapidly
advancing capabilities of PC 3D graphics cards. However, game
engines lack key features required by virtual reality applications
such as support for tracking, stereoscopic graphics, and multiple
displays. We describe our experience extending an open source
game engine, OGRE (Object Oriented Graphics Rendering
Engine) [15] for use in our immersive virtual reality research
project, FlatWorld. This task required the integration of the
engine into an existing virtual reality application framework. Our
completed system utilized OGRE for stereoscopic 3D graphics
rendering, OpenAL [16] for audio processing, ACE [1] for
network communications, and Boost.Spirit [3] for parsing
configuration files. Our process of adding multi-screen, tracked
stereoscopic display capabilities to the engine is also described.
Furthermore, benefits and limitations of 3D games engines
compared to dedicated VR toolkits are discussed. We also
describe a prototype application built with our game engine based
system."}