On Thursday, 6 October 2016 at 13:35:01 UTC, Mike Parker wrote:
So, change DerelictGL3.load to DerelictGL.load, then add a call to DerelictGL.reload after creating and activating the context.

Thank you! That fixed the segmentation fault problem and the crash :)

But I still struggle with the right Context...

if I do something like this

        DerelictGL.load();
        area.makeCurrent();
        DerelictGL.reload();

I get an (runtime) error (on the terminal where I run my application):

(LibraryTest:2984): Gtk-CRITICAL **: gtk_gl_area_make_current: assertion 'gtk_widget_get_realized (widget)' failed derelict.util.exception.DerelictException@gl3.d(85): DerelictGL3.reload failure: An OpenGL context is not currently active.
[...]


After all, I really don't know, what a GLContext is, what I need it for and how to use it. If somebody can explain it to me, I would be happy! I didn't find anything about it on the Internet, but I like to know, whats going on behind my code...

I will keep on playing around with all the context functions, maybe I find something by accident that works xD


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