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- Path: nntp.teleport.com!sschaem
- From: sschaem@teleport.com (Stephan Schaem)
- Newsgroups: comp.sys.amiga.programmer,comp.sys.amiga.advocacy,comp.os.ms-windows.advocacy
- Subject: Re: intuition inefficient ?
- Followup-To: comp.sys.amiga.programmer,comp.sys.amiga.advocacy,comp.os.ms-windows.advocacy
- Date: 1 Mar 1996 20:00:21 GMT
- Organization: Teleport - Portland's Public Access (503) 220-1016
- Distribution: world
- Message-ID: <4h7l0l$3n9@maureen.teleport.com>
- References: <4gm2qg$8lk@sunsystem5.informatik.tu-muenchen.de> <4gqhjj$j7b@maureen.teleport.com> <4gtqdk$mu0@sunsystem5.informatik.tu-muenchen.de>
- NNTP-Posting-Host: julie.teleport.com
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-
- Juergen "Rally" Fischer (fischerj@Informatik.TU-Muenchen.DE) wrote:
- : Stephan Schaem (sschaem@teleport.com) wrote:
- : : Juergen "Rally" Fischer (fischerj@Informatik.TU-Muenchen.DE) wrote:
-
- : : I dont know PC HW , but Dbuffer is what I would go for... BTW I read
- : only tripple buffering makes full use of cpu.
-
- Ok, but this was reguarding a waitfof methode . but hey, if the card
- as enought mem for 3 buffer and support seting video mem start and
- allow vblank interupt I would go for that. I would go with even more
- if the video HW could work in parallel to prepare a 'blank page'.
- (BTW: thats the senario on the amiga if you draw 3d objects on a
- blitter backdround.)
-
- : : that the 'majority' of amiga nowdays dont have a vbi anymore :)
- : : Well they have the native video one, but since its not used it mean
- : : nothing.
- : Using the AmigaOS3.0 routines does it for both AGA & gfx-cards.
-
- I read here that the routine use diferent sync then the gfx card.
- like the card run at 72hz, the sync you will get will be 50 or
- whatever your native chipset is running at.
-
- : : The VBL mean nada for splitfree anim, you can as well use a timmer
- : : interupt derived from the video mode timing.
-
- : On AmigaOS, yes (but you don't need it as gfxlib already got it).
- : On PC AFAIK only under DOS.
-
- On amiga OS or ANY OS you cannot get splitfree anim with a vbeam sync!
- you need dbuffer MINIMUM.
-
- Stephan
-