[vtkusers] vtkImageData Modified: Just update a small area of the data?

[Willy]

Thanks for your answers. I will try the MultiBlockVolumeMapper, but thats not
possible yet, because im am working with Visual studio 2010 and thats not
supported by the newest vtk version. i will buy vs 2017, but thats not
released yet.

In the meantime i tried another solution. i thought i could do all my small
changes on downsampled data and if thats done i could load the high
resolution data. The problem is, that my picture freezes for 2-3 seconds
(until the high resolution data is loaded), because my thread is blocked. to
prohibit that, i created two threads with to different
vtkRenderWindows,pipelines and everything else in it. i tryed to load the
3gb data in one thread and only switch the picture to that thread if the
loading is done. That would basically work. The problem here is that the
gpu-load goes up to 98% while i am loading the 3gb data. The other thread
can not render anything in that time because the gpu is blocked.

Can i somehow tell the 3gb-thread to just use for example 50% of gpu-load
(half gpu-load and double time)?



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