[MPlayer-users] Re: Radeon frambuffer use if Radeon is not primary displThu Dec 13 01:29:45 2001

[Nick Kurshev]

Hello, Arpi!

On Thu, 13 Dec 2001 01:34:02 +0200 (CEST) you wrote:

> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> Hi,
> 
> > > Btw later they found that AGP is slow too, and instead of placing textures
> > > in system ram (and access via AGP) they started to increase amount of memory
> > > on the card -> 64/128mb radeons/geforces.
> > 
> > Which of course means that for an Mplayer/video-out only display
> > device, the minimum available memory that can be bought (I have not
> > seen less than 32MB cards these days) is all that is needed.  I would
> > bet that most of it would be wasted for video-out.
> > 
> for video playback, you need max. 2*xres*yres*3 bytes and some megs for the
> desktop (at 32bpp it's 4*xres*yres) and XAA (128kb ?).
> so, in general, a 8mb card should be enough for everything.
> i had mem size problems with 4mb ati in my laptop with 720x576 res dvds
> at 1024x768x32bpp.
> 
> > > but todays cards like matrox g series and radeons are all AGP chips. the PCI
> > > versions of these cards (if exists)
> > 
> > They certainly do exist.
> at leats matrox does produce pci versions, i don't know about radeon.
> 
> > > have PCI-to-AGP bridge on teh card and
> > > the AGP chip... and they aren't supported under linux afaik.
> > 
> > No?  The radeon_vid frame-buffer driver that you have in the Mplayer
> > project would not support a PCI Radeon card?
> i think no.
> there was a discussion about such cards at DRI-devel list some months ago.
> the driver should know and control the pci-to-agp bridge on the card to
> reach the video chip. and current drivers can't do that...
> 
> > So being cost concious, what is the most "featureless" Radeon that
> > would be acceptable for "Mplayer"ing?  I have an ATI TV-Wonder tuner
> > card right now, but that Radeon with the TV-In and the TV-Out is
> > looking mighty nice.  :-)
> why do you need radeon? what about an oldy mach64 chuip card with tvout?
> it's even better supported by gatos drivers.
> 
Mach64?
Is it joke?
Well - it's good card for MPEG1, MPEG4 playback but not for DVD since only
Rage128-Radeon have ADAPTIVE DEINTERLACING!!!
(At least from ATI's card - I don't know about NVidia and Matrox;
OTOH - Rage128 - Radeon have WORKING support of this feature in GATOS and my
radeon_vid)
> 
> A'rpi / Astral & ESP-team
> 
> --
> mailto:arpi at thot.banki.hu
> http://esp-team.scene.hu
> 
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Best regards! Nick