| Re: Unable to acquire a GL context (IDLDE and w2000) [message #28452] |
Thu, 13 December 2001 05:15 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Martin Downing (martin.downing@ntlworld.com) writes:
> Ok, I guess I am missing something really simple here (or just going mad!).
> I recently upgraded IDL to 5.5 as well as adding w2000 sp2
> (ha ha - thats right - most of you can now skip this message!!)
> This is what I get when using hardware object rendering:
>
> wBase = WIDGET_BASE()
> wDraw3D = WIDGET_DRAW(wBase, GRAPHICS_LEVEL=2)
> WIDGET_CONTROL, wBase, /REALIZE
> WIDGET_CONTROL, wDraw3D, GET_VALUE=oWindow
> % WIDGET_CONTROL: Unable to acquire a GL context.
> % WIDGET_CONTROL: Invalid widget identifier: 116.
>
> Well, unless I have lost it, I was using hardware GL rendering quite happily
> before. Does anyone have a clue what I have missed in setting up
> preferences, or any other ideas as to the problem.
Well, hardware rendering is always problematical,
but if you had it working before (same graphics
card), but not now, I would say you need to upgrade
your graphics driver to work with your new OS.
> Cheers, think I need a coffee earlier than usual today!
In my experience this is pretty much mandatory when
working with object graphics programs. :-)
Cheers,
David
--
David W. Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155
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