Newsgroups: comp.sys.amiga.graphics
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!cunixf.cc.columbia.edu!cunixb.cc.columbia.edu!es1
From: es1@cunixb.cc.columbia.edu (Ethan Solomita)
Subject: Re:  So, does *anyone* make 1024x768 x256 for the A3000?
Message-ID: <1991Apr25.192819.20350@cunixf.cc.columbia.edu>
Sender: usenet@cunixf.cc.columbia.edu (The Network News)
Nntp-Posting-Host: cunixb.cc.columbia.edu
Reply-To: es1@cunixb.cc.columbia.edu (Ethan Solomita)
Organization: Columbia University
References: <15250@helios.TAMU.EDU> <1991Apr24.211729.19270@bronze.ucs.indiana.edu> <frank.4544@morpheus.UUCP>
Date: Thu, 25 Apr 1991 19:28:19 GMT

In article <frank.4544@morpheus.UUCP> frank@morpheus.UUCP (Frank McPherson) writes:
>--
>I think you're right about that.  Think about it.  A quick calculation
>tells you that a 640x400 pixel image with 24 bitplanes would occupy SIX
>megabytes (6,144,000 bytes, to be exact) of storage.  Likewise, a
>1024x768 image which had 24 bitplanes would occupy 18,874,368 bytes.  Not
>something you'd be able to display on your average Amiga 3000.
>
	That's 24 BIT planes, not 24 BYTE planes. 640x400 with 24
bit planes is 750K, or 640 * 400 * 3. 24 bits is 3 bytes.

>"24 bit graphics" does not imply 24 bit planes.  I'm sure someone will
>correct me if I'm wrong, but I think that with normal 24 bit graphics
>boards, they allow you to choose 256 colours (8 bitplanes) from a
>palatte of 16 million (approx. 2^24).
>
	24 bit graphics means 24 bit graphics. What you're
referring to is 8 bit graphics, also the SVGA standard.

>
>-- Frank McPherson		 INTERNET : emcphers@fox.cs.vt.edu	--
>--				AmigaUUCP : uunet!vtserf!morpheus!frank --


	-- Ethan

"Brain? What is Brain?"
