From:	"Tihomir Heidelberg" <9a4gl AT 9a0tcp DOT ampr DOT org>
Newsgroups:	comp.os.msdos.djgpp
Subject:	StdVGA mode 12 (640x480x16) help need
Date:	Fri, 10 Mar 2000 03:19:40 +0100
Organization:	CARNet, CROATIA
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

Hi

I plan to write dos graphic program in mode 12 (640x480 16colors)
because that mode should work on all VGA cards.
Allegro do not support that resolution.
I tried GRX2.3 but its text function in that mode is too slow.
I made program writing 50 times 40 chars text and get only
17 fps (when drawing on memory bitmap and then bitblt to screen).
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).

Many thanks for help,
Tihomir 9a4gl AT 9a0tcp DOT ampr DOT org



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Tihomir Heidelberg, 9a4gl AT 9a0tcp DOT ampr DOT org
http://ham2.irb.hr/9a4gl

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