Sender: nate AT cartsys DOT com
Message-ID: <35F73D38.DD044556@cartsys.com>
Date: Wed, 09 Sep 1998 19:45:12 -0700
From: Nate Eldredge <nate AT cartsys DOT com>
MIME-Version: 1.0
To: Endlisnis <s257m AT unb DOT ca>
CC: djgpp AT delorie DOT com
Subject: Re: MAJOR slowdowns in translating TP7 gfx code to DJGPP2
References: <35F45C78 DOT 2257 AT post DOT tau DOT ac DOT il> <35F45F0C DOT 2243BDB1 AT unb DOT ca> <35F53FD4 DOT 4D03 AT post DOT tau DOT ac DOT il> <35F59B28 DOT 35138CF4 AT unb DOT ca>
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Precedence: bulk

Endlisnis wrote:

>         Well, it is going to run twice as slow in 320x200x16bit mode (because there
> is twice the memory to write to).  And it will run 9.6 times slower in
> 640x480x64k mode (and 25 times slower in 1024x768x64k).

That assumes that the speed of the program is proportional to the screen
memory to be written, which is almost never the case.  Deciding what to
draw is usually slower than drawing it.
-- 

Nate Eldredge
nate AT cartsys DOT com