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Hello
I've been playing around adding widgets to an Fl_Gl_Window, I'm aware its being work on still. I noticed that passing FL_MULTISAMPLE does provide anti-aliasing on Linux (X11) and MacOS but not on Windows.
#include <FL/Fl.H> #include <FL/Enumerations.H> #include <FL/Fl_Gl_Window.H> #include <FL/Fl_Line_Dial.H> int main() { auto win = new Fl_Gl_Window(400, 300); win->mode(FL_MULTISAMPLE); win->box(FL_FLAT_BOX); win->begin(); auto dial = new Fl_Line_Dial(100, 50, 200, 200, ""); dial->selection_color(FL_BLUE); dial->color(FL_RED); dial->box(FL_OFLAT_BOX); win->end(); win->show(); return Fl::run(); }
windows:
Linux (X11):
Also win->mode(FL_OPENGL3 | FL_MULTISAMPLE); would break antialiasing on MacOS, whereas removing the FL_OPENGL3 fixes it.
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