ok, so
If no conforming visual exists, NULL is returned.
It is hard to imagine, that these attributes not supported
{GLX_RGBA. GLX_DEPTH_SIZE.
24.
GLX_DOUBLEBUFFER. 0}
the code seems to be fine.
This is what i found:
-------
http://www.opengl.org/wiki/Programming_OpenGL_in_Linux:_GLX_and_Xlib
If glXChooseVisual returns with success, the visual's id will be
output. If NULL is returned, there is no visual that fulfills your
needs. In that case, check the output of glxinfo again. Maybe you have
to use a different depth buffer size (GLX_DEPTH_SIZE, 16 instead of
GLX_DEPTH_SIZE, 24), or you could even have to remove the
GLX_DEPTH_SIZE (or the GLX_DOUBLEBUFFER) entry. This should be
considered especially if you want to create programs not only for your
computer, but for other ones: You should code your program in a way
that it can check a list of different combinations of visual
attributes, because the capabilities depend heavily on the hardware.
-----
They also using
vi = glXChooseVisual(dpy, 0, att);
second argument = 0. not #defaultScreen.
On 10 February 2012 19:59, Javier Pimás <elpochodelage...@gmail.com> wrote:
> yes, notice that it is in a different
> repo: http://www.squeaksource.com/NBXLib
>
>
> On Fri, Feb 10, 2012 at 3:53 PM, Igor Stasenko <siguc...@gmail.com> wrote:
>>
>> On 10 February 2012 19:48, Javier Pimás <elpochodelage...@gmail.com>
>> wrote:
>> > To load NBOpenGL-X package you need to load NBXLib-core first
>> >
>> i don't see it. did you uploaded it?
>>
>> >
>> > On Fri, Feb 10, 2012 at 3:39 PM, Igor Stasenko <siguc...@gmail.com>
>> > wrote:
>> >>
>> >> Btw, javier i cannot load your package to check what you did:
>> >>
>> >> This package depends on the following classes:
>> >> NBXLibConstants
>> >> You must resolve these dependencies before you will be able to load
>> >> these definitions:
>> >> NBGLXContextDriver
>> >> supportsCurrentPlatform
>> >> createContext:
>> >>
>> >>
>> >>
>> >>
>> >> On 10 February 2012 19:34, Igor Stasenko <siguc...@gmail.com> wrote:
>> >> > On 10 February 2012 19:19, Lawson English <lengli...@cox.net> wrote:
>> >> >> Is that code even ready for consumption?
>> >> >>
>> >> >> I was told that until there is a new ConfigurationOfNBOpenGL ready,
>> >> >> to
>> >> >> not
>> >> >> load the new packages.
>> >> >>
>> >> >
>> >> > you could try :)
>> >> >
>> >> > but this is what i working on now (slowly integrating the parts of
>> >> > Javier's code,
>> >> > because not everything which he did i like ;)
>> >> >
>> >> >
>> >> >> L.
>> >> >>
>> >> >>
>> >> >> On 2/10/12 10:12 AM, Javier Pimás wrote:
>> >> >>
>> >> >> I'm trying to create an OpenGL context on linux but glxChooseVisual
>> >> >> fails.
>> >> >> Maybe there's someone there experienced with this that can help.
>> >> >>
>> >> >> The code I'm trying is:
>> >> >>
>> >> >> display := NBXLibDisplay open.
>> >> >> window := display defaultRootWindow.
>> >> >> visualInfo := NBXLibVisualInfo fromPointer: (gl chooseVisual:
>> >> >> display
>> >> >> screen: display defaultScreen attributes: {GLX_RGBA. GLX_DEPTH_SIZE.
>> >> >> 24.
>> >> >> GLX_DOUBLEBUFFER. 0} asWordArray).
>> >> >> ...
>> >> >>
>> >> >> but chooseVisual returns a null pointer. I even tried putting an
>> >> >> array
>> >> >> with
>> >> >> only 0 on attributes but didn't work either (and these attributes
>> >> >> should be
>> >> >> supported).
>> >> >>
>> >> >> Any idea of what could be wrong? The code is available to test in
>> >> >> squeaksource, you need nativeboost+NBXLib to try
>> >> >>
>> >> >> Cheers,
>> >> >> Javier
>> >> >>
>> >> >> --
>> >> >> Lic. Javier Pimás
>> >> >> Ciudad de Buenos Aires
>> >> >>
>> >> >>
>> >> >
>> >> >
>> >> >
>> >> > --
>> >> > Best regards,
>> >> > Igor Stasenko.
>> >>
>> >>
>> >>
>> >> --
>> >> Best regards,
>> >> Igor Stasenko.
>> >>
>> >
>> >
>> >
>> > --
>> > Lic. Javier Pimás
>> > Ciudad de Buenos Aires
>>
>>
>>
>> --
>> Best regards,
>> Igor Stasenko.
>>
>
>
>
> --
> Lic. Javier Pimás
> Ciudad de Buenos Aires
--
Best regards,
Igor Stasenko.
