Date: Wed, 30 Jun 93 13:47:28 EDT
From: kent AT cme DOT nist DOT gov (Ernie Kent)
To: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: screen update speed


Of the several dozen people who wanted copies of the
assembly-code for direct screen update, about half asked
just how much faster it was than bitblt. Unfortunately,
being the lazy sort, I didn't know. Now one person who
is using it has run a test. For those interested, he 
reports 5.4 frames/sec with the "xfer" routine vs. 2.7 
frames/sec with grx bitblt, on a 1024x768x256 image with 
a 486/33.

Ernie