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Date:      Tue, 27 Dec 2005 10:26:54 +0100
From:      Chris Gilbert <Chris@lainos.org>
To:        "Darren Pilgrim" <darren.pilgrim@bitfreak.org>
Cc:        'Eric Anholt' <eta@lclark.edu>, freebsd-current@freebsd.org
Subject:   Re: ATI on FreeBSD! FireGL Linux Driver Port (correction, clarification)
Message-ID:  <200512271026.55460.Chris@lainos.org>
In-Reply-To: <000201c60ac5$f3016db0$642a15ac@smiley>
References:  <000201c60ac5$f3016db0$642a15ac@smiley>

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<obligatory>glxgears is not a benchmark!</obligatory>

In any case, there could be a lot of reasons for the slower glxgears 
performance with the fglrx driver.

However, like I said before, the fglrx driver as of now has zero 3D 
acceleration, so slow GL performance is to be expected.

Also in regards to fgl_glxgears not running, that is because it uses ATI 
pbuffers, and the FreeBSD libGL builds we have do not currently support 
these.

When/if ATI makes custom FreeBSD libGL builds that include these, fgl_glxgears  
it will work the same as it's linux build.

Also, I am about to release a new minor revision of the drivers with some 
fixed make rules and a preliminary FreeBSD port. (Port as in ports system)

Should have it up within the hour for everyone to test.

On Tuesday 27 December 2005 10:14, Darren Pilgrim wrote:
> > -----Original Message-----
> > From: Eric Anholt [mailto:eta@lclark.edu]
> > Sent: Tuesday, December 27, 2005 12:23 AM
> > To: Darren Pilgrim
> > Cc: 'Chris Gilbert'; freebsd-current@freebsd.org
> > Subject: RE: ATI on FreeBSD! FireGL Linux Driver Port
> > (correction,clarification)
> >
> > On Tue, 2005-12-27 at 00:12 -0800, Darren Pilgrim wrote:
> > > From: Darren Pilgrim
> > >
> > > > - Ran glxgears, default window size, both drivers with
> >
> > DRI disabled.
> >
> > > > 	fglrx: ~164 FPS
> > > > 	radeon: ~670 FPS.
> > >
> > > The xorg logs indicate the radeon driver test was run without:
> > >
> > > 	Options "VideoOverlay" "on"
> > > 	Options "OpenGLOverlay" "off"
> > >
> > > I retested the radeon driver with the above options
> >
> > specified and got the
> >
> > > same performance.
> >
> > Those aren't radeon driver options (which should all be specified in
> > radeon(4)).
>
> True.  But by the radeon(4) man page on the test system, the closest thing
> would be NoAccel.  Testing the radeon driver, with DRI disabled, the
> fglrx-specific options commented out and "NoAccel" "on":
>
> 2D performance is a misnomer.
> glxgears: ~683 FPS
>
> If you, Chris or anyone can think of a set of options to make the radeon
> driver more equivalent to the fglrx driver, post 'em and I'll grind the
> gears.



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