How vtkMultiBlockDataSet is rendered in vtk

Dear Experts,

i put several vtkPolyData into vtkMultiBlockDataSet, i am wondering how vtkMultiBlockDataSet is rendered in VTK if my polyData only contain Lines?

It use VBO technique, one VBO for each vtkMultiBlockDataSet?

Because in my situation, i need render very large number of lines, Points/Spheres with high performance, any suggestion is helpful to me

Thanks in advance!


Depends on which mapper you are using. Assuming vtkCompositePolyDataMapper2 It combines polydata into the minimum number of VBOs possible. Multiple polydata can use the same VBO.

Thank you Cory for your kind help!