[vtkusers] When does rendering take place?

[Wong WJ]

Hi, thanks for all people who reply me. I finally get VTK running under 
MPICH.

I have some other question now.... Think my concept of graphics is not very 
strong so need some help to clear my doubts. My main concern is to 
distribute the load of rendering so that display will be faster. I just dont 
want a processor to render all the actors in the scene.

1)When will rendering process really occurs? Which VTK syntax will actually 
make the processor to start render the object?  Taking the examples provided

Taskparallelism
Taskparallelismwithports

For Taskparallelism, the individual task will actually render their own 
information and finally combine together? This way the exchange of 
information is actually the rendered image?
For Taskparallelismwithport, one task is sending polydata into the port, is 
this information already rendered? or the main task will collect all the 
polydata and render all the information under itself, which make the actual 
rendering process done by 1 processor?


Tks......
WongWJ


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