Message-ID:	<8D53104ECD0CD211AF4000A0C9D60AE3230072@probe-2.Acclaim-Euro.net>
From:	Shawn Hargreaves <ShawnH AT Probe DOT co DOT uk>
To:	djgpp AT delorie DOT com
Subject:	Re: Graphic Speed and memory
Date:	Mon, 26 Oct 1998 10:17:27 -0000
MIME-Version:	1.0
X-Mailer:	Internet Mail Service (5.0.1460.8)
Reply-To:	djgpp AT delorie DOT com

Nicolas Blais writes:
> First of all, I'd like to know which of those takes longer to refresh?
> 800x600x15bit
> 640x480x32bit
> Second, how do you calculate how much memory it takes?

800x600x15 = 720000 bits = 900000 bytes
640x480x32 = 9830400 bits = 1228800 bytes

That isn't quite accurate because 15 bit pixels are actually padded 
to a 16 bit alignment, making the real size be 800x600x16 = 960000 
bytes. So, a 640x480x32 mode takes up 1.28 times as much memory as 
an 800x600x16 one, and will therefore take 28% longer to refresh.

btw. could you please turn off HTML formatting in your email program?
It makes your messages very hard for many people to read...


	Shawn Hargreaves.

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