[vtkusers] Blinking actors during picking

[Jeff Lee]

The problem is in vtkOpenGLFreeTypeTextMapper.cxx.  somebody put in some 
code to change the depthFunc and it doesn't behave properly when 
picking.  Hopefully we'll find out why it's being mucked with in 
RenderOvelay, but in the mean time I think you can get away with 
commenting out the glDepthFunc lines.
-Jeff

Jenny Simpson wrote:

>I have an application using Vtk that involves picking of several actors
>such as spheres, boxes, etc.  I notice that when I pick on an object in
>order to have text appear near the object, other objects in the scene
>"blink", that is they appear and disappear a few times before the image
>returns to normal.  Even objects that should be obscured are visible for a
>short amount of time while the picking is being processed.  This is more
>pronounced on slower machines.  Why does this happen?  Is there a way to
>prevent it from happening?
>
>Thanks,
>
>Jenny Simpson
>Scientific Computing and Imaging Institute
>University of Utah
>
>
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