Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!mips!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!linac!mp.cs.niu.edu!ux1.cso.uiuc.edu!cs326ag From: cs326ag@ux1.cso.uiuc.edu (Loren J. Rittle) Newsgroups: comp.sys.amiga.graphics Subject: Re: So, does *anyone* make 1024x768 x256 for the A3000? Message-ID: <1991Apr25.232433.25037@ux1.cso.uiuc.edu> Date: 25 Apr 91 23:24:33 GMT Organization: University of Illinois at Urbana Lines: 35 In article 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 Humm, I guess you flunked math (big :-). 640x400x3(bytes) = ~3/4 MB >1024x768 image which had 24 bitplanes would occupy 18,874,368 bytes. Not 1024x768x3 = ~2 1/4 MB >something you'd be able to display on your average Amiga 3000. Seems quite manageable to me. :-) You got mixed up with the byte/bit conversion, I guess... >"24 bit graphics" does not imply 24 bit planes. I'm sure someone will Consider yourself corrected, 24 bit graphics means 24 `bits' (not bytes ;-) are used per pixel. >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). That would be an 8-bit graphics board with a 24-bit palette. >-- Frank McPherson INTERNET : emcphers@fox.cs.vt.edu -- Loren J. Rittle -- ``The Amiga continues to amaze me--if I had not been told that this video was created using the Amiga and Toaster, I would not have believed it. Even Allen said, `I think I know how he did most of the effects.' '' - Jim Lange Loren J. Rittle l-rittle@uiuc.edu