Path: utzoo!attcan!uunet!wuarchive!psuvax1!rutgers!texbell!sugar!peter
From: peter@sugar.hackercorp.com (Peter da Silva)
Newsgroups: comp.sys.amiga.tech
Subject: Re: 4096 Hires
Message-ID: <4483@sugar.hackercorp.com>
Date: 5 Nov 89 17:54:17 GMT
References: <4801@sdcc6.ucsd.edu> <11906@mcdphx.phx.mcd.mot.com> <4463@sugar.hackercorp.com> <955@madnix.UUCP>
Reply-To: peter@sugar.hackercorp.com (Peter da Silva)
Organization: Sugar Land Unix - Houston
Lines: 29

In article <955@madnix.UUCP> aaron@madnix.UUCP (Aaron Avery) writes:
> It's not all that simple to "increase the quantization a little".

Why not? Right now it does something on the order of:

	For each line:
		Choose color table for this line, based on
			color frequencies.

What's wrong with:

	For each four lines:
		Choose color table for these lines, based on
			color frequencies.

> Using the copper to do this "kludge" also chews up the CPU pretty well, since
> it steals all of its cycles from the CPU.

Yeh, but it's designed for this task and the opcodes are smaller. Total memory
bandwidth is reduced. And if you just do it with a custom copper list for a
screen it's easier to integrate with Intuition.

And if you have FAST RAM, the advantage of using the copper is increased, since
it only steals cycles from CHIP.
-- 
Peter "Have you hugged your wolf today" da Silva      `-_-'
...texbell!sugar!peter, or peter@sugar.hackercorp.com  'U`
``Back off dude! I'm a topologist!''
	-- Andrew Molitor <amolitor@eagle.wesleyan.edu>