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Solutions > Products > VR Library / VR Publisher
 VR Library / VR Publisher
Virtools Solution for Totally Immersive PC Cluster Based Virtual Reality
The VR Library is an add-on for Virtools 4 that allows
developers to create totally immersive, full-life
experiences using industry standard VR peripherals
and/or PC based distributed computing (clusters).
The VR Publisher enables the deployment of
compositions created with the VR Library. It features
remote controlling and logging facilities as well as
appropriate configuration and management tools for
the administrator and the end user.
«Virtools’ technologies have proven to be the ideal platform for creating
virtual reality applications for our CAVE. Programming is done in an
extremely high-level environment which nonetheless remains open.
The complexity inherent in CAVE cluster development is no longer an
obstacle. With technical issues revolved, we are free to concentrate on
building effective applications»
David Routier
DSIN CAD & Visualization Manager
PSA Peugeot Citroën
Immersion
Taking advantage of VRPN , an open source standard (more info at http://www.vrpn.org), tthe VR Publisher provides an easy
out-ofthe-box solution to manage and get the most out of industry standard VR devices. A VRPN server is installed on the PC
managing the input devices. Device-state information is specified in a configuration file (that includes required axis modifications
and tracker/ antenna offsets) and is retrieved in a Virtools scene via Virtools Behavior Building Blocks, familiar to all Virtools 4
users. Building Blocks for direct device support are also provided.
With head-tracking, correct user centered perspective is setup, and full immersion is achieved through stereoscopy, whether
using active or passive equipment (shutter glasses, shutter screens, polarizing filters or glasses).
Distributed Computing On PC Clusters and Multi-GPU System
The VR Library/Publisher enables distributed computing for PC clusters, which can
radically lower the cost of VR projects while offering very high performance. Scenes
are synchronized by reading parameters in the master scene and passing them to
client scenes.
Relevant parameters for synchronization are determined by the
developer authoring the application, and are easily accessible in the Schematic
editor of Virtools 4. PC cluster distributed computing enables rendering from different
viewpoints, a requirement for high-performance passive stereoscopy or
multi-screen displays. Note that PCs with two graphics cards or a dual-head
graphics card can render two or more viewpoints simultaneously.
The VR Publisher can also take advantage of scalable cluster platforms such as
Orad DVG: add more rendering nodes per screen to increase polygon or pixel
performance and/or antialiasing quality..
Comprehensive Deployment for the Administrator
and the End-User
The VR Publisher gives the system administrators configuration tools to define the
actual display, device and cluster parameters such as screen dimensions, stereo
types, PC names. This is only to be done once and guaranties the end user that his
VR experience will be compliant with the actual hardware being used.
This hardware configuration facility also enables transparent interchange of VR
experiences between different VR centers and displays.
Scalable Offer for Buyers
The VR Library standalone offers all the development features necessary for authoring a VR experience to be deployed on standalone workstations, whereas the “VR Library Complete” also includes the ability to author for PC clusters.
The VR Publisher comes in 3 Levels with a scalable pricing, depending on the hardware class (see table). When deploying over a cluster, the pricing is dependant on the number of PCs in the cluster, enabling you to budget your VR software together with your VR hardware.

Key Features
- Greater flexibility and reduced costs
with standard PC hardware clusters
- VR peripheral device drivers ready to
use out of the box
- More realistic experiences with
advanced display synchronization
- Rapid, low cost content development
using simulation mode
- Faster, more effective development
using Virtools 4 intuitive interface
(GUI)
- True support for multi-GPU / multi-CPU
PC architectures
- Application templates and VR specific
behaviour libraries to drastically
reduce development time (VRNR)
- Ready to use set of VR demos to
showcase your VR hardware and
software capacitiesGreater flexibility and reduced costs with standard PC hardware clusters
General Features
- Designed for PC clusters
- Support for many industry standard
VR peripherals
- Multi-Display synchronization with
FrameLock & Genlock capabilities
- Simulation mode in the absence
specific hardware
- Active or passive stereoscopy
- Hardware portability with external
configuration
Supported Input Devices (partial list)
- Polhemus Fastrak
- Ascension Technology Flock of Birds
- InterSense IS600, IS900, IS1200, Inertiacube,
Intertrax
- Immersion Cyberglove
- ART tracking optical trackers and flysticks
- Logicad/Magellan SpaceBall and SpaceMouse
- All VRPN compatible input devices
- All Windows compatible game controller
Technical Requirements
- Virtools 4 for the VR Library
- DirectX/OpenGL compatible 3D
graphics accelerator card
- Windows 2000/XP 32 or 64 bits
Supported Displays (partial list)
- Virtual reality cubic rooms (e.g. SAS Cube®, Cave®, VR Cube®, I-Space®)
- Panoramic rooms (e.g. Reality Center®)
- Immersive tables/desks (e.g. Baron®, ImmersaDesk®, Workbench®)
- High-resolution image walls (e.g CAD wall)
- Desktop multi-monitors
- Any head mounted displays or VR goggles
- Sensics pSight HMD
- Any custom shaped set of fixed or reconfigurable screens
Supported Image Generators
- Any DirectX/OpenGL- compatible
3D graphics accelerator card
- Genlockable graphics card for
multi-screen active stereoscopy
such as Wildcat® 7210 or
Nvidia® Quadro fx 3000, 4500,
4600, 5500 or 5600 with G-Sync
option board
- Scalable cluster hardware for
optimized performance (e.g.
Orad DVG)
Download the Virtools VR Library / VR Publisher Datasheet in PDF
Contact sales@virtools.com for prices or additional information.
Order now directly from Virtools or from an authorized Virtools agent
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