[racket] gl2d / gl-world: Debugging strange error / determining which libraries are missing

I just uploaded a fixed version.

Jay

On Fri, May 18, 2012 at 3:29 AM, Stephan Houben <stephanh42 at gmail.com> wrote:
> This looks like a bug in gl-world.
>
> gl-world fails to specify the style 'gl to the canvas% constructor.
>
> See: http://docs.racket-lang.org/gui/canvas_.html?q=canvas
>
> I guess Jay is using a platform on which it happens to work without style
> 'gl.
>
> Stephan
>
>
> 2012/5/18 JP Verkamp <racket at jverkamp.com>
>>
>> Interesting. Taking away the gl-world code and using the code to
>> create a canvas% with a gl-context from here (
>>
>> http://lists.racket-lang.org/users/archive/attachments/20100118/4272caa0/attachment-0001.ksh
>> ) works just fine (albeit slowly, I need to get the OpenGL drivers
>> working correctly again).
>>
>> Perhaps I'm using gl-world incorrectly. It would still be helpful if
>> there was a way to get a better error message to tell me what was
>> going wrong though.
>>
>> On Thu, May 17, 2012 at 6:09 PM, JP Verkamp <racket at jverkamp.com> wrote:
>> > For whatever reason I don't have that directory. I ran this version
>> > instead:
>> > https://raw.github.com/plt/racket/master/collects/sgl/examples/gears.rkt
>> >
>> > That worked fine, rotating the gears as expected and printing this to
>> > the console:
>> > RENDERER: Mesa DRI Intel(R) 945GM x86/MMX/SSE2
>> > VERSION: 1.4 Mesa 8.0.2
>> > VENDOR: Tungsten Graphics, Inc
>> > EXTENSIONS: ...
>> >
>> > If it helps, I'm using Ubuntu 12.04 which either didn't have Racket or
>> > at least not a newer version, so I'm installing from this PPA:
>> > deb http://ppa.launchpad.net/plt/racket/ubuntu precise main
>> >
>> > On Thu, May 17, 2012 at 4:58 PM, Michael Wilber <mwilber at uccs.edu>
>> > wrote:
>> >> Can you run other OpenGL Racket programs? For example, try the gears
>> >> example:
>> >>
>> >> racket /usr/lib/racket/collects/sgl/examples/gears.rkt
>> >>
>> >> On Thu, 17 May 2012 17:49:21 -0400, JP Verkamp <racket at jverkamp.com>
>> >> wrote:
>> >>> Hopefully someone out there can help me out, I've run into a a bit of
>> >>> a problem with the gl2d and gl-world packages from PLaneT. I've got a
>> >>> relatively small sample and whenever I run the code (even after
>> >>> commenting out all of the OpenGL specific code other than the big-bang
>> >>> call), I always get this error:
>> >>>
>> >>> send: target is not an object: #f for method: call-as-current
>> >>>
>> >>> The one relevant response I've found thus far on the subject is from
>> >>> Matthew Flatt from last December on the mailing list (
>> >>> http://lists.racket-lang.org/users/archive/2011-October/048813.html )
>> >>> which says to check "Do you have "libgdkglext-x11-1.0" and
>> >>> "libgtkglext-x11-1.0" installed?", which I do. There's a .so for each
>> >>> in my /usr/lib directory. After that though, I'm not sure where to go.
>> >>> Is there perhaps some way to check which libraries that Racket is
>> >>> trying to load / what else might be causing the error?
>> >>>
>> >>> Thanks,
>> >>> JP
>> >>> ____________________
>> >>>   Racket Users list:
>> >>>   http://lists.racket-lang.org/users
>>
>> ____________________
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>>  http://lists.racket-lang.org/users
>
>



-- 
Jay McCarthy <jay at cs.byu.edu>
Assistant Professor / Brigham Young University
http://faculty.cs.byu.edu/~jay

"The glory of God is Intelligence" - D&C 93