From owner-freebsd-multimedia  Tue Apr  3 14: 8:13 2001
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From: Marc van Woerkom <van.woerkom@netcologne.de>
To: Alexander@leidinger.net
Cc: mreimer@vpop.net, 3d@FreeBSD.ORG, multimedia@FreeBSD.ORG
In-reply-to: <200104031906.f33J6mE00856@Magelan.Leidinger.net> (message from
	Alexander Leidinger on Tue, 3 Apr 2001 21:06:47 +0200 (CEST))
Subject: Re: nvidia binary drivers
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> Does nvidia_drv.o really _requieres_ the kernel module to put
> _something_ on the screen (do you have tried it yourself)?

I expect unresolved symbols while linking the glx module..


> I didn't have the PI description about the architecture here, but if I
> remember correctly there are two ways to put 3D on the screen. A way
> which uses DMA and a way without DMA.

You probably refer to direct rendering (banging on the graphics iron directly) 
and indirect rendering (transmitting all graphics primitives via sockets),
using the GL over X protocol (=GLX the protocol).

The latter has been realized with the Utah glx module for 3.3.x
servers - but it is slow due to protocol overhead and of course because
the driver does not use low level features of the nvidia chips, like
DMA.

Regards,
Marc


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