From: Shawn Hargreaves <Shawn AT talula DOT demon DOT co DOT uk>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Fastiest code to blit to scscreen?
Date: Wed, 18 Jun 1997 22:13:39 +0100
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Thomas Lai writes:
>       Any nice guy has code to blit a whole BITMAP (same dim as screen)
>       to the screen fastiest using Allegro?  

blit(bmp, screen, 0, 0, 0, 0, SCREEN_W, SCREEN_H);

>       I have an idea:
>               1) if the memory of the lines of a memory BITMAP is
>                  continuous 
>               2) the screen is in banked SVGA
>               3) copy the memory BITMAP to the screen using long move
>                  with minimum bank switches

Exactly. That, if you look at the sources, is almost exactly what blit()
does!


--
Shawn Hargreaves - shawn AT talula DOT demon DOT co DOT uk - http://www.talula.demon.co.uk/
Beauty is a French phonetic corruption of a short cloth neck ornament.