I noticed when I change between rendering contexts
the display lists for objects are thrown away and there is a delay to rebuild
these display lists. To remedy this I turned on immediate mode rendering on the
mappers. There is a slight speed difference on my TNT2 but not enough to worry
about.
Tom C.
I
have an application that uses 4 render windows - 1 for 3D objects and 3
widgets for 2D images. I am noticing
considerable rendering
delay switching between the 2d and 3d windows. Especially, when I come from
interacting with
the 2D images to the 3D render window. Depending on the
data size, it takes a significant time to do the first
rendering and after
that, the interaction (using render window interactor) works normally.
Is there some major
overhead between switching pipelines (these are
independently constructed vtk pipelines). Note that nothing in
the 3D
widget has changed except for the camera position.