[Paraview] Render a Tile

[Mario]

Finally I'm able to render a tile from the ray cast mapper in my vtk
application.
I have two questions for you:

1 - When I render a tile with IceT, it casts ray only from that
selected pixels, or it computes all the image then clips?
I think the first, infact I captured the last render time and it's
faster when I only render a tile instead of all the image...

2 - When I don't set tile dimensions and I leave the default mode, it
composes only a single tile, the entire image... that image is
rendered in cooperation by all the processes or only by the process 0?
that is, I had parallel volume rendering or not? I wasn't able to
prove that because I don't have a cluster or a parallel machine, but I
simulate it in my desktop pc with MPI....

Thank you in advance

Mario

2006/11/7, Moreland, Kenneth <kmorel at sandia.gov>:
>
>
>
>
> IceT works fine for compositing only a single tile.  In fact, this is the
> default mode when starting ParaView in client/server with desktop delivery.
>
>
>
> The real issue is the volume mappers that ParaView gives access to.  Right
> now, ParaView only gives access to the unstructured grid volume mappers.
> Structured volume rendering is going to be added before the release of
> ParaView 2.6, but I have been told for that release ParaView will only
> support vtkFixedPointVolumeRayCastMapper.
>
>
>
> It is also possible to use VTK+IceT without ParaView, but tricky.
>
>
>
> -Ken
>
>
>
>
>  ________________________________
>
>
> From: paraview-bounces+kmorel=sandia.gov at paraview.org
> [mailto:paraview-bounces+kmorel=sandia.gov at paraview.org] On
> Behalf Of Mario
>  Sent: Friday, November 03, 2006 3:53 AM
>  To: paraview at paraview.org
>  Subject: [Paraview] Render a Tile
>
>
>
>
> Hi all,
>  I want to ray cast (with vtkVolumeRayCastMapper) only a tile of the final
> image, with no computation of the rest of the image, in a normal screen (not
> Tiled-display).
>  How can I use IceT library on a single machine? It's possible to do this
> with vtk+IceT without Paraview?
>
>  Thanks
>  Mario