[vtkusers] Overlay graphics problem?

[Malcolm Drummond]

Confirmed

My laptop has an ATI Rage Pro and exhibits the same prb. I tried
drawMesh.tcl in the imaging library. When camera is looking directly down
over the pole, the overlay disappears. It reappears if I zoom in a bit.
Seems as if it's getting confused about depth.

Malcolm Drummond
GeoVision cc

----- Original Message -----
From: Pan, Tony C (Research) <tpan at crd.ge.com>
To: vtk mailing list <vtkusers at public.kitware.com>
Sent: Friday, May 17, 2002 7:42 PM
Subject: [vtkusers] Overlay graphics problem?


> Hi,
> I have a tcl application that displays an image, and has mouse interaction
to allow user to draw a
> region of interest on top of the image.  I am using a polydata to contain
a square for this purpose,
> and the square is added to the renderer as an Actor2D.  This is a VTK 4.0
application.
>
> My problem is that with my desktop, which has an ATI Rage Pro integrated
graphics chip, the box does
> not render. TextActors and the image do render okay.  I suspect this is
related to the graphics
> hardware, since a test on ATI fireGL worked fine.  Can someone please
confirm this, and/or offer
> potential workarounds?
>
> Thank you.
>
> Tony Pan
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