[vtkusers] Visual SGI 320 + Windows 2000, anyone ?

[David Gobbi]

Oops!  You're right, the Cobalt 5.2.3 driver does screw up on our
system, but only for images.  The problem seems to depend on the
dimensions of the rendering context.

I went back to the Cobalt 5.2.1 drivers and everything is working
fine again.

 - David

On Tue, 10 Apr 2001, David Gobbi wrote:

> Hi Sebastien,
> 
> Our SGI 320 doesn't have any rendering problems.  We're running
> Win2000 SP1 with all of the most recent drivers & patches from
> http://support.sgi.com
> 
> We've also applied the BIOS upgrade (we did this just before installing
> Win2000)
> 
> Actually there is one small rendering problem, in that sometimes
> a small artifact is created if the cursor is in motion over a scene
> that is being rendered.  This is probably because we aren't using
> overlay planes.
> 
> We have Cobalt Chip Set A4, Driver 5.2.3,
> 
>   24 Bit Depth, 8 bit Stencil
>   No Overlay Planes
>   Back Buffers
> 
>   SwapBuffer on VerticalRetrace
>   Hardware Display Lists
>   Mixed-Mode Rendering
> 
>   1600x1200
>   True Color
>   52MB Additional Memory
> 
>  - David
> 
> --
>   David Gobbi, MSc                    dgobbi at irus.rri.on.ca
>   Advanced Imaging Research Group
>   Robarts Research Institute, University of Western Ontario
> 
> On Tue, 10 Apr 2001, Sebastien BARRE wrote:
> 
> > Hi
> >
> > I've just upgraded my SGI 320 to Windows 2000 SP1 + SGI SSK.
> >
> > I'm experiencing the following (and very annoying) problem :
> > All images looks as if the horizontal pixels were duplicated when
> > "backbuffer" is on :)
> > sadly, rendering is 6 to 7 times slower when it's off :(
> >
> > My settings : Display Properties -> Parameters -> Advanced -> Silicon
> > Graphics Settings -> Properties
> >
> > Graphics:
> > 	Depth / Stencil : 24 bit depth, 8 bit stencil
> > 	Overlay planes : Single-buffered
> > 	Use back buffer : On
> >
> > Changing the depth/stencil to either "16 bits" or "none", and overlay
> > planes to "double buffer" or "none" does not change anything : back buffer
> > is the only settings that actually remove the artefact (but the rendering
> > cost in unacceptable).
> >
> > Memory:
> > 	1280x1024, True Color, Additional mem : 96 MB
> >
> > Advanced:
> > 	Apply Swapbuffer on Vertical retrace only : On
> > 	Enable Hardware Display list : On
> > 	Enhance Mixed-mode rendering : On
> >
> > Thanks
> >
> >
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