[vtkusers] vtkRenderer goes dark on zoom

[John Eke]

Hi Guys,

I have 2 renderers layered one over top of the other. The renderer behind holds a bunch of images, and the renderer in front acts as a drawing plane where a user can draw over the image.

Problem is, both renderers come up fine. But once I zoom in, everything goes dark. However, once I draw somthing on the front renderer, THEN zoom... everything seems happy. So it appears vtk didnt like the fact that the top renderer was empty.

Does anyone have any experience with this? Please help.

Thanks

John E



      
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