Re: [Dri-users] X says DRI OK, glxinfo doesn't

[Felix <fx...@gm...>]

On Thu, 23 Jan 2003 12:20:53 +0100
Stefan Lange <hoi...@gm...> wrote:

> Felix Kühling wrote:
> > I got a Voodoo3 working on my brothers Debian Box a while ago. I just
> > reread the package descriptions of libglide2 and libglide3. They
> > mention a /dev/3dfx driver which seems to be provided by the package
> > device3dfx-source. I hope this helps.
> 
> 
> I think you're confusing something here:
> With a Voodoo3 you have two different ways of getting 3D-acceleration.
> 
> 1) use XF86 3.x + libglide2 + /dev/3dfx
> This is the ancient way and existed already before the DRI. It will be 
> restricted to fullscreen rendering. /dev/3dfx with the corresponding 
> kernel module provides 3d accel for non-root users and usage of mtrr in 
> this case
> 
> 2) use XF86 4.x + libglide3 + DRI
> The normal/modern/suggested way. You'll need libglide3 on your system, 
> as well as a 4.x version of X, and the tdfx.o drm-module. Then 3D will 
> be accessed through DRI. This will also enable you to use windowed 
> rendering for example

You're right, sorry for the confusion. From the DRI User's Guide:

# The /dev/3dfx device is not used for DRI; it's only for Glide on older 3dfx hardware.

> 
> in both cases 3D-accel is limited to 16bit-mode (a hardware 
> restriction), so you can't get working DRI if you've got a 24bpp-desktop

Then this is the most likely cause of trouble.

> 
> hope this clarifies things a bit
> Stefan

Felix

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