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From: | Damian Yerrick <DONT DOT YOU DOT DAREd_yerrick AT hotmail DOT comSEND DOT SPAM> |
Newsgroups: | comp.os.msdos.djgpp |
Subject: | Re: Page Flipping with Allegro? |
Organization: | Pin Eight Software http://pineight.8m.com/ |
Message-ID: | <vi1lcsslvpb7i1kk1nk7j7mhrhc9ng1dbf@4ax.com> |
References: | <MPG DOT 13339d04ea6580a798b984 AT news DOT freeserve DOT net> <Pine DOT LNX DOT 4 DOT 10 DOT 10003111829060 DOT 633-100000 AT darkstar DOT grendel DOT net> |
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NNTP-Posting-Date: | Sat, 11 Mar 2000 17:47:47 GMT |
Distribution: | world |
Date: | Sat, 11 Mar 2000 17:47:47 GMT |
To: | djgpp AT delorie DOT com |
DJ-Gateway: | from newsgroup comp.os.msdos.djgpp |
Reply-To: | djgpp AT delorie DOT com |
On Sat, 11 Mar 2000 18:35:50 +0600 (LKT), Kalum Somaratna aka Grendel <evilgrendel AT gmx DOT net> wrote: >On Sat, 11 Mar 2000, Andrew R. Gillett wrote: > >> In comp.os.msdos.djgpp, Kalum Somaratna aka Grendel wrote: >> > >and some more code along with it to handle the flipping and such, >> > >> > ?? AFAIK scroll_screen does wait for the vsync before modifying any >> > registers, so what exactly is this code that you wrote to handle the >> > flipping. >> >> vsync doesn't work on all VESA implementations, which may be why the >> reason that Al is getting flicker. > >I think that you are meaning that the VGA register based method of >detecting the vsync won't work with all vesa based implementations. > >This is correct _BUT_ AFAIK Allegro uses the VESA based method of >obtaining info about vsync etc.. so this should not be a problem as >reagrds to Al's usage of the Allegro code. Voodoo cards don't even work with that. -- Damian Yerrick http://yerricde.tripod.com/ Comment on story ideas: http://home1.gte.net/frodo/quickjot.html AOL is sucks! Find out why: http://anti-aol.org/faqs/aas/ View full sig: http://www.rose-hulman.edu/~yerricde/sig.html This is McAfee VirusScan. Add these two lines to your .sig to prevent the spread of .sig viruses. http://www.mcafee.com/
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