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  From: becka@rz.uni-duesseldorf.de
  To  : mailing list GGI <ggi-develop@eskimo.com>
  Date: Mon, 3 May 1999 16:17:25 +0200 (MET DST)

Interesting reading ...

Hi folks !

/. pointed me to http://www.quake3arena.com/news/glopt.html

Interesting ... especially John Carmack saying:

"This is intended mostly for people working on 3D drivers for Linux, and 
is basically the same information we have provided to the Windows and Mac 
driver coders.

First off, if your driver is communicating over any standard communication 
pipe (like X), you are pretty much SOL. The data traffic is so high that a 
good framerate is going to be almost impossible to achieve. A direct 
rendering model is needed to get reasonable performance.

Next, if your driver is directly writing to a small command FIFO on the chip, 
you will be limited to about 2/3 or less of the framerate you could get with 
a fully decoupled DMA buffer approach. It is possible to get a playable game 
with a directly writing driver, but it won?t be running with the best of them.
..."

CU, ANdy

-- 
Andreas Beck              |  Email :  <Andreas.Beck@ggi-project.org>

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