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Date:      Fri, 05 Nov 1999 01:37:27 -0800
From:      Amancio Hasty <hasty@rah.star-gate.com>
To:        Soren Schmidt <sos@freebsd.dk>
Cc:        doconnor@gsoft.com.au (Daniel O'Connor), current@FreeBSD.ORG, yokota@zodiac.mech.utsunomiya-u.ac.jp (Kazutaka YOKOTA), mike@smith.net.au (Mike Smith)
Subject:   Re: vga driver and signal 
Message-ID:  <199911050937.BAA53523@rah.star-gate.com>
In-Reply-To: Your message of "Fri, 05 Nov 1999 09:19:29 %2B0100." <199911050819.JAA70396@freebsd.dk> 

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> Is all this just because some of the new video HW are crappy, ie that
> they produce snow/flicker/whatever (like in the old CGA days) or is
> this a genuine problem, as I said above I've never seen any problems
> on my ATI cards, and my laptop doesn't have this either (neomagic)..
> =

Yes, this is a problem if you try to do a blit in the middle of a vertica=
l
retrace you will get a small artifact for instance as you move your windo=
w
you will see have a line or more half drawn and when you stop moving
the window the blit completes. What determines the lacking
retrace is the delta time of the mouse movement. =


-- =


 Amancio Hasty
 hasty@rah.star-gate.com




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