[comp.sys.sgi] Video Playback on the GTX.

drforsey@watcgl.waterloo.edu (Dave Forsey) (03/14/89)

At the SGI booth at SIGGRAPH last year, one of the demos on the GTX presented
a window repeatedly replaying a short segment of previously captured NTSC
video.

Was this accomplished by filling up the framebuffer with the images and
copying them one after another into the visible window, or did the images
come from main memory?

Dave Forsey
Computer Graphics Laboratory,
University of Waterloo

gavin@krypton.SGI.COM (Gavin Bell) (03/14/89)

That program is called 'blast', and it stored its images in main memory
(I believe that demo needed at least 32 megabytes of real memory...)
There are two other demos, 'cine' and 'cinebw', that store their images
in frame buffer memory; they both take over the entire screen, while
blast runs in its own window (cinebw handles black&white images, cine
does full-color RGB images).

--gavin   (gavin@sgi.com)
Disclaimer:  I make just as many dumb little mistakes as anybody...

rpaul@dasys1.UUCP (Rod Paul) (03/16/89)

I don't know if perchance you're refering to the demo that Hannaway & Associates
were playing on their GTX. Was the sequence you saw a cowboy galloping on a
horse? If so it was them and if you need their number I can give it to you.