> Christian Convey wrote:
> > I'm porting to OS X 10.5 an app that works just fine on Linux. I'm using
> > FLTK 1.1.7.
> >
> > We have a class (MarineViewer) that subclasses from Fl_Gl_Window. In
> > MarineViewer's constructor, we have this code:
> >
> > m_textures = new GLuint[1];
> > ...
> > glGenTextures(1, m_textures);
> >
> > The call to glGenTextures is generating a bus error. I think it's related
> > to something I found while debugging: If I call "this->context()" from
> > within that same constructor, I get back the value NULL. I assume this
> > means that for some reason, FLTK isn't able to get an OpenGL context for my
> > program to use.
> >
> > Any idea why I might be seeing this? Any idea how I can fix it?
>
> If the code you're running needs a valid gl context, try moving
> this code to the !valid() section of your draw() method, eg:
>
> void MarineViewer::draw() {
> if ( ! valid() ) {
> ..
> glGenTextures(1, m_textures);
> ..
> }
> }
>
> By that time FLTK will have created the actual window and context.
>
> I'm thinking FLTK doesn't actually create the GL window/context
> until after the constructors have been called, and the program
> has started the FLTK event loop.
That did it! Thanks!
For some reason Linux has no problem with the way the app was coded previously,
but OS X did.
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