Re: [Visualpython-users] VPython errors on a laptop

[Bruce S. <Bru...@nc...>]

I haven't seen this before, but it would seem to be a problem with the 
video driver on that laptop. The problem is probably not in VPython but 
in OpenGL, which is reporting the error. Older laptops sometimes had 
lousy video drivers. It would make sense to try to update the video 
drivers and see whether that cures the problem.

Another thing you can try is changing the graphics acceleration setting. 
Right-click the desktop background, choose Properties, then Settings, 
then Advanced, then Troubleshoot.

Bruce Sherwood

Jody Eisler wrote:

> Greetings,
>
> I'm a fairly new user to VPython, but somewhat experienced with 
> general graphics & 3d related things.
>
> Here's an issue that's just cropped up for me when using the graphing 
> module of VPython:
>
> ***VPYTHON RENDERING ERROR*** ../../vpython/src/gldevice.cpp:940 
> invalid enumera
> nt when rendering OpenGL display list number 520
> ***VPYTHON RENDERING ERROR*** ../../vpython/src/gldevice.cpp:940 
> invalid enumera
> nt when rendering OpenGL display list number 521
> ***VPYTHON RENDERING ERROR*** ../../vpython/src/gldevice.cpp:940 
> invalid enumera
> nt when rendering OpenGL display list number 522
>
>
> and so on until infinity, repeating that exact same line.   It is only 
> doing it on a laptop (sorry, not my laptop - so I don't have 
> specifics) ... the program has been run on several desktop machines 
> with no issues.
>
> However, the graphs display just fine on the laptop -- it just keeps 
> cranking out that error message.
>
>
> We do have a small 3d graphing module in the pipeline as well, and 
> while this error is harmless (but very annoying) right now, I'm 
> somewhat worried that it will become a show-stopper with the 3d module.
>
> Has anyone seen anything of this sort before, or know what might be 
> going on?   The version of VPython being used is the one on the 
> vpython.org website, downloaded in the last couple of weeks.
>
> My first guess is that the laptop doesn't have a 3d accelerator.   
> It's undoubtedly just a stock card with no bells & whistles, but 
> shouldn't that just all get shunted over to software rendering by 
> OpenGL anyways?
>
> The laptop is running Windows XP, and Python 2.4.2.   The various 
> desktop machines are mixed Windows & Linux, with no apparent problems.
>
>
> Thanks in advance for any help/advice/suggestions!
>
> Jody Eisler
>
>
>
>
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