diff options
Diffstat (limited to 'src/Fl_Gl_Overlay.cxx')
| -rw-r--r-- | src/Fl_Gl_Overlay.cxx | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/src/Fl_Gl_Overlay.cxx b/src/Fl_Gl_Overlay.cxx index a3518000e..5bf993ab2 100644 --- a/src/Fl_Gl_Overlay.cxx +++ b/src/Fl_Gl_Overlay.cxx @@ -1,5 +1,5 @@ // -// "$Id: Fl_Gl_Overlay.cxx,v 1.5.2.17 2001/03/20 18:02:52 spitzak Exp $" +// "$Id: Fl_Gl_Overlay.cxx,v 1.5.2.18 2001/05/05 23:39:01 spitzak Exp $" // // OpenGL overlay code for the Fast Light Tool Kit (FLTK). // @@ -66,6 +66,7 @@ extern unsigned long fl_transparent_pixel; extern uchar fl_overlay; class _Fl_Gl_Overlay : public Fl_Gl_Window { + void flush(); void draw(); public: void show(); @@ -75,6 +76,22 @@ public: } }; +void _Fl_Gl_Overlay::flush() { + make_current(); +#ifdef BOXX_BUGS + // The BoXX overlay is broken and you must not call swap-buffers. This + // code will make it work, but we lose because machines that do support + // double-buffered overlays will blink when they don't have to + glDrawBuffer(GL_FRONT); + draw(); +#else + draw(); + swap_buffers(); +#endif + glFlush(); + valid(1); +} + void _Fl_Gl_Overlay::draw() { if (!valid_) glClearIndex((GLfloat)fl_transparent_pixel); if (damage() != FL_DAMAGE_EXPOSE) glClear(GL_COLOR_BUFFER_BIT); @@ -214,5 +231,5 @@ void Fl_Gl_Window::hide_overlay() { #endif // -// End of "$Id: Fl_Gl_Overlay.cxx,v 1.5.2.17 2001/03/20 18:02:52 spitzak Exp $". +// End of "$Id: Fl_Gl_Overlay.cxx,v 1.5.2.18 2001/05/05 23:39:01 spitzak Exp $". // |