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<blockquote cite="mid1147464926.4562.54.camel@gargon.hooperlab"
type="cite">
<pre wrap="">
I finally figured out that John Biddiscombe was right that I should not
be using the vtkDistributedDataFilter. I think I should be using
</pre>
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I'm not sure it's really the answer. Although I didn't say anything
wrong, I was in a hurry and hadn't apprecaited from reading your
message fully that you are volume rendering <b><i>unstructued grids</i></b>
(as opposed to imagedata). The trouble is that when you read "pieces"
from a file, you will end up with chunks "randomly arranged" in space
and rendering each chunk on a separate node will give you compositing
nightmares because of the depth sorting issue. In this case perhaps
Distributed Data Filter will help you (it's not one I've used directly
so won't comment)<br>
<br>
Now ideally the Reader would be able to accpet a "piece" description
which was a bounding box in space, the master controller would query
the file, and get the bounding box of everything, you could subdivide
space into regions, read regions into each process as pieces and then
render non overlapping using back to front sort on the top level actor
objects. All would be fine.<br>
<br>
I've not followed all this thread very carefully as I'd assumed you'd
solved the data trouble and were having rendering trouble of an
unrelated matter. I'm not entirely certain what it is you are trying to
do that isn't working.<br>
<br>
(ie I'm not helping am I!)<br>
JB<br>
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