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% Internal error: Unable to set pixel format. [message #21940] Thu, 05 October 2000 17:59 Go to next message
Thomas Launey is currently offline  Thomas Launey
Messages: 25
Registered: September 1999
Junior Member
Dear experts,
I have an object-based widget to display scatter plots with adjustable XY
range. It works well on one computer but not on another one (same IDL
version) and the reported error is:
% Internal error: Unable to set pixel format.
I need some hints about where the problem may come from but I cannot find
any information about the "internal error". Does anyone has any idea
where I could get some explanations about this cryptic message?
thanks
Thomas
Re: % Internal error: Unable to set pixel format. [message #21942 is a reply to message #21940] Thu, 05 October 2000 00:00 Go to previous messageGo to next message
davidf is currently offline  davidf
Messages: 2866
Registered: September 1996
Senior Member
Rikagaku (t_launey@brain.riken.go.jp) writes:

> I have an object-based widget to display scatter plots with adjustable XY
> range. It works well on one computer but not on another one (same IDL
> version) and the reported error is:
> % Internal error: Unable to set pixel format.
> I need some hints about where the problem may come from but I cannot find
> any information about the "internal error". Does anyone has any idea
> where I could get some explanations about this cryptic message?
> thanks

This doesn't sound too good. To see it on one computer,
but not on another suggests graphics cards. Have you tried
the program with software rendering turned on? That clears
up an awful lot of lousy OpenGL implementations by
the hardware manufacturers. :-)

I'd contact the folks at RSI about "Internal errors".

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155
Re: % Internal error: Unable to set pixel format. [message #22012 is a reply to message #21940] Tue, 10 October 2000 17:59 Go to previous message
Thomas Launey is currently offline  Thomas Launey
Messages: 25
Registered: September 1999
Junior Member
In article <MPG.1446d2ff4a5e3db5989c4b@news.frii.com>,
davidf@dfanning.com says...
> Rikagaku (t_launey@brain.riken.go.jp) writes:
>
>> I have an object-based widget to display scatter plots with adjustable XY
>> range. It works well on one computer but not on another one (same IDL
>> version) and the reported error is:
>> % Internal error: Unable to set pixel format.
>> I need some hints about where the problem may come from but I cannot find
>> any information about the "internal error". Does anyone has any idea
>> where I could get some explanations about this cryptic message?
>> thanks
>
> This doesn't sound too good. To see it on one computer,
> but not on another suggests graphics cards. Have you tried
> the program with software rendering turned on? That clears
> up an awful lot of lousy OpenGL implementations by
> the hardware manufacturers. :-)
>
> I'd contact the folks at RSI about "Internal errors".
>
> Cheers,
>
> David
>
>

Thanks a lot
I got an answer from randall Frank who also suggested an OGL-related
problem. After updating DirectX to 7.0 and reinstalling the OGL drivers
(from GLsetup.com), everything worked fine again.
Thank you very much.

Thomas Launey
Laboratory for Memory and Learning, Brain Science Institute, RIKEN
Saitama, JAPAN
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