From: varobert AT colba DOT net
Message-Id: <3.0.32.19990731232201.007b1d30@mail.colba.net>
X-Sender: varobert AT mail DOT colba DOT net
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Date: Sat, 31 Jul 1999 23:22:04 -0400
To: djgpp AT delorie DOT com
Subject: Re: Allegro: videomemory with bitmaps + sprites
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Reply-To: djgpp AT delorie DOT com

Any calls to create_video_bitmap will allocate memory directly from video
ram without taking in concideration the current screen mode, virtual size,
etc. so to create a video bitmap outside your screen area, you'll have to
do BITMAP *video = create_video_bitmap(SCREEN_W, SCREEN_H) (adjust for
virtual screen), and then free this at the end your program...also, I
suppose (never tried it) that writting to that bitmap will write directly
to your screen.

At 05:22 PM 7/31/99 +0200, you wrote:
>Hello!
>
>I want to use the fast  videomemory with pageflipping for my game:
>
> BITMAP *bmp;
> bmp = create_video_bitmap(640,480);
>
>If I draw a bitmap with draw_sprite(bmp, sprite, 0,0) in to the created
>videospace, the sprite will be shown on the screen... But why??? I don't
>have used the function show_video_bitmap(bmp)!
>
>How could this possible and how I must use this video_bitmap-functions
>correctly?
>
>And I have a loop for the draw_sprite() and its flickering, with
>show_video_bitmap() and vsync() it's not better.
>
>--
>Amin Kharchi
>Wolfsburg, Germany
>
>
>

- GodOfWar
Computers are getting faster, smaller and cheaper with time. Does that mean
that Microsoft invented time travel ?