From:	"Campbell, Rolf [SKY:1U32:EXCH]" <moscoop AT americasm01 DOT nt DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: StdVGA mode 12 (640x480x16) help need
Date:	Fri, 10 Mar 2000 12:08:36 -0500
Organization:	Nortel Networks
Lines:	18
Message-ID:	<38C92C14.4A7AA22D@americasm01.nt.com>
References:	<8a9mg2$jph$1 AT bagan DOT srce DOT hr>
NNTP-Posting-Host:	wmerh0tk.ca.nortel.com
Mime-Version:	1.0
X-Mailer:	Mozilla 4.72 [en] (X11; I; HP-UX B.10.20 9000/785)
X-Accept-Language:	en
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

Tihomir Heidelberg wrote:

> When drawing directly to screen I get only 7fps on my Celeron 400 with AGP.
> On 386 notebook I get 1fps :(
>
> Anyone can give me a documentation, tutorial or note how to write
> in memory to draw on screen in mode 12 ?
> (Like mode 13 320x200x256 use 0xa000000).

    Well, there's a reason why nobody uses that mode, it sux.  It uses
bit-planes to draw pixels (each bit of a pixel exists in a different location
in memory), so drawing stuff is slow.

--
(\/) Rolf Campbell (\/)

- Raw text -