HELP! * GREY=local LOCAL HTML version of Foils prepared 31 January 1996

Foil 30 Infrastructure -- SGI Support for stereoscopic viewing

From Master Foilset for Collaborative and Interactive Visualization Project First Review Review Meeting at Rome Laboratory -- 31 January 1996. by Geoffrey C. Fox * See also color IMAGE
Three stereo modes supported on SGI machines
Option 1. 1280x492 (512 on Onyx) pixels per right/left field (eye), at 60 field-pairs per second. Supported by all models. Requires shutter glasses. Reduces spatial resolution to one-half of the original display. Only one resolution supported.
Option 2. Right/left buffer allocated to the right/left eye. Requires 120 fields/sec, 90 fields/sec is a minimum. Supported by Reality Engine only. Requires shutter glasses. Does not reduce spatial resolution. Supports multiple resolutions. Maximal spatial resolution for stereo viewing depends on pixel bus bandwidth limit.
Option 3. Separate video channel dedicated to each eye. Requires Multichannel Video option (MCO) or multiple graphics pipes. Used with VR helmets or with aligned two-head rear projection displays, for which it requires linear polarizers and glasses.

Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu

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