Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!public!valentin
From: valentin@public.BTR.COM (Valentin Pepelea)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: hardware sprites
Keywords: sprites
Message-ID: <2987@public.BTR.COM>
Date: 8 Jun 91 05:11:37 GMT
References: <19672@csli.Stanford.EDU> <2979@public.BTR.COM> <22258@cbmvax.commodore.com>
Organization: BTR Communications, Mtn. View, CA
Lines: 19

In article <22258@cbmvax.commodore.com> spence@cbmvax.commodore.com (Spencer
Shanson) writes:
>
>Valentin, ChangeSprite() has to MoveSprite(), whereas FreeSprite()
>is much simpler - point the sprite to a default sprite of 0s. I would be
>surprised if you have found ChangeSprite() to be faster than FreeSprite().

On the other hand, restoring the sprite will require an additional call to
GetSprite(). So the question is whether FreeSprite() and GetSprite() together
are faster than just ChangeSprite(), praticularly when you take into account 
the overhead of calling these functions. There are advantages to having access
to the source code, so why don't you tell me.

Valentin
-- 
"An operating system without virtual memory      Name:      Valentin Pepelea
 is an operating system without virtue."         Phone:     (408) 985-1700
                                                 Usenet:    mips!btr!valentin
                     - Ancient Inca Proverb      Internet:  valentin@btr.com