[vtkusers] Red Hat 7.0 + XFree86 4.0.2 = VTK (fwd)

Tom Bartol bartol at salk.edu
Wed Jan 31 11:42:03 EST 2001


I now using FreeBSD-4.2 with XFree86-4.0.2 and VTK 3.1.2.  For me, the
rendering quality is as high as it's always been with XFree86-3.3.6 and
older versions VTK.

Tom


On Wed, 31 Jan 2001, Olivier wrote:

> On Wednesday 31 January 2001 12:46, Tom G. Smith (B75826) wrote:
> > Since I've upgraded to RedHat 7.0 and VTK 3.1.2, I've noticed a marked
> > deterioration in the quality of my renderings.  For example, instead
> > of smooth transitions from light to dark in shadows, I see more abrupt
> > and less realistic changes.
> >
> > I still have vtk 2.4 on one of our SGI systems, and the comparison of
> > the same rendering on vtk 2.4 makes the one done with vtk 3.1.2 look
> > like a bad Andy Warhol painting.
> >
> > I note, however, that my vtk 2.4 is compiled using OpenGL, and 3.1.2
> > is using Mesa.  Could that be the difference in rendering quality, or
> > should I seek to upgrade Xfree86 from 4.0.1 to 4.0.2?
> >
> 
> I think that Xfree86 4.xx does not offer the GLX acceleration for a lot of 
> graphic cards, so the solution would then be to actually go back to an older 
> version (Xfree86 3.3.6).
> 
> Olivier
> 
> 
> 
> -- 
> --------------------------
> Olivier Coulon
> University College London,
> Dept. of Computer Sciences,
> Gower Street,
> London WC1E 6BT
> 
> tel: +44 207 679 3702
> fax: +44 207 387 1397
> mailto:O.Coulon at cs.ucl.ac.uk
> http://www.cs.ucl.ac.uk/staff/O.Coulon
> 
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