Accessing Frame Buffer

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Tim Curry (curry++at++chris.gcs.redstone.army.mil)
Mon, 12 Dec 94 13:22:06 -0600

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I am trying to read the video frame buffer very quickly so I can
perform some image processing on the image and write it back to the frame
buffer. Doing lrectreads is very very slow because I am trying to achieve 60 Hz.
I would like to see SGI give the user access to the VRAM via fast cache
or RAM. I know the RE hardware documents the voltages to the frame buffer
for 3rd party hardware to interface. Does anyone have a faster solution
to reading the frame buffer.
email: Tim Curry/MICOM<curry++at++chris.gcs.redstone.army.mil>
phone: (205)876-7219

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