Xref: utzoo comp.sys.amiga.tech:2339 comp.sys.amiga:24908
Path: utzoo!attcan!uunet!pyrdc!pyrnj!rutgers!att!icus!eric
From: eric@icus.islp.ny.us (Eric L. Hyman)
Newsgroups: comp.sys.amiga.tech,comp.sys.amiga
Subject: Re: Which blt routine?
Message-ID: <535@icus.islp.ny.us>
Date: 5 Nov 88 05:11:33 GMT
References: <1268@astroatc.UUCP>
Reply-To: eric@icus.UUCP (Eric L. Hyman)
Organization: ICUS Software Systems, Islip, New York
Lines: 26

While I can't answer your inital Q: which was which Blt routine
the Bob routines use, I can tell you that no matter which one you
decide to use, it will be SLOW. The one you mentioned is the only
canned routine good enough for cookie cutting, alhtough you can
get the same results with Dual calls to BltBitMap one for the mask
and one for the data. this in itself is pretty slow.
After thrashing my head against the
wall about this for the last year while writing my 3 SSI
conversions, I decided to do something about it for my new Game.
If you would like I can send the the source to A NIce nifty
routine I wrote for Doing Cookie Cut Blits in a single funtion
call with no Tmpras needed....Or if others are interested, I will
posted...(That is if you give me a day to clean it up :) )
...In addition, let me just say that it doesn't become clear how slow
the Stock routines are for "specific" needs untill you write
a less geenral routine yourself and then try it!...My map refreshs
Zoom along now at twice the speed, And the amazing part is Im
Blitting twice the
Data in A Higher Resolution!

-- 
   Eric Hyman       |             ...att    \
                    |                boulder \
   eric @ icus      |                talcott  !icus!eric
                    |                pacbell /
                    |                sbcs   /