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- Path: osse.nrl.navy.mil!jung
- From: jung@osse.nrl.navy.mil (Greg Jung)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: AGA-coders & GFXCardsowners. Look here!
- Date: 11 Jan 1996 19:32:25 GMT
- Organization: NRL, Washington, D.C. - Code 7650
- Sender: jung@osse.nrl.navy.mil ()
- Distribution: world
- Message-ID: <4d3ok9$rab@ra.nrl.navy.mil>
- References: <1045.6583T1246T2499@mbox3.swipnet.se> <4d35pl$l63$1@sydney.DIALix.oz.au>
- Reply-To: jung@osse.nrl.navy.mil ()
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-
- In article <4d35pl$l63$1@sydney.DIALix.oz.au>, accolyte@sydney.DIALix.oz.au (Troy Till) writes:
- |>Roland Bengtsson (roland.bengtsson@mbox3.swipnet.se) wrote:
- |>: There exists a lot of AGA-demos, but I haven't seen any gfxdemos on a CyberGraphx screen.
- |>:
- |>: Why? Is it difficult, lame or nobody have thought about it?
- |>:
- |>: AGA-demos must work on a A1200 without fastram. I think most machines with gfxcards
- |>: have the double speed for calculations. Why not translate a AGA-demo to CyberGraphX?
- |>: Ok you maybe can't use the copper or sprites, but that's only a small part.
- |>
- |>Small part? SMALL PART??!? It's what makes the Amiga what it is!! Sheesh.
- |>
- |>Troy.
-
- Well I believe there are a few issues, a gfx card would have sprites
- I suppose and a blitter, etc. but all of different quality and quantity
- so when you go to the lowest common denominator of this you get a
- PC-type "civilization" or such game as the pc is fine at doing. Gfx
- cards don't reproduce all possible amiga functions. So fine we
- exclude such stuff we are still left with a lot that can be done
- on all graphics cards, ECS, and AGA.
-
- So to get this program to do graphics we need an interface that
- the programmer calls to do a certain task that then attaches to the
- specific AGA/gfx-card/ECS hardware module to implement under current
- conditions. In the case of graphics cards that include workbench
- emulations anything that sticks to the commodore graphics.library
- etc. would work, that is adopted as the default API and patches are
- made to divert what the OS would normally do to the graphics-card
- functions. Developing the OS to naturally include this option and
- allow possibly more extensive generalized graphics calls is "RTG
- support" which is a desired goal but possibly not yet promised for
- OS 4.
-
- As to being a small part of the amiga, I agree with that myself,
- myself not being a game programmer. As a demo machine the amiga
- doesn't need the OS, anyway, it is one of several platforms with
- similar features. On the amiga it is still accessible to non-official
- development.
-
- Greg
-