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Preliminary OpenGL single-buffering fix.

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git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@2676 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Michael R Sweet 2002-10-15 20:45:58 +00:00
parent 1d42e4784b
commit 7db8fe569d
3 changed files with 24 additions and 6 deletions
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4
CHANGES
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@ -1,5 +1,9 @@
CHANGES IN FLTK 1.1.1
- Some OpenGL implementations don't support single-
buffered visuals. The Fl_Gl_Window class now emulates
single-buffered windows using double-buffered
windows.
- Added a workaround for a compiler bug in Borland C++
that prevented Fl_Help_View.cxx from compiling.
- Checkmarks didn't scale properly; copied the 2.0 check

7
FL/Enumerations.H
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@ -1,5 +1,5 @@
//
// "$Id: Enumerations.H,v 1.18.2.14.2.26 2002/10/07 13:47:54 easysw Exp $"
// "$Id: Enumerations.H,v 1.18.2.14.2.27 2002/10/15 20:45:58 easysw Exp $"
//
// Enumerations for the Fast Light Tool Kit (FLTK).
//
@ -381,7 +381,8 @@ enum Fl_Mode { // visual types and Fl_Gl_Window::mode() (values match Glut)
FL_STENCIL = 32,
FL_RGB8 = 64,
FL_MULTISAMPLE= 128,
FL_STEREO = 256
FL_STEREO = 256,
FL_FAKE_SINGLE = 512 // Fake single buffered windows using double-buffer
};
// damage masks
@ -405,5 +406,5 @@ enum Fl_Damage {
#endif
//
// End of "$Id: Enumerations.H,v 1.18.2.14.2.26 2002/10/07 13:47:54 easysw Exp $".
// End of "$Id: Enumerations.H,v 1.18.2.14.2.27 2002/10/15 20:45:58 easysw Exp $".
//

19
src/Fl_Gl_Window.cxx
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@ -1,5 +1,5 @@
//
// "$Id: Fl_Gl_Window.cxx,v 1.12.2.22.2.12 2002/08/09 03:17:30 easysw Exp $"
// "$Id: Fl_Gl_Window.cxx,v 1.12.2.22.2.13 2002/10/15 20:45:58 easysw Exp $"
//
// OpenGL window code for the Fast Light Tool Kit (FLTK).
//
@ -65,7 +65,16 @@ void Fl_Gl_Window::show() {
if (!shown()) {
if (!g) {
g = Fl_Gl_Choice::find(mode_,alist);
if (!g) {Fl::error("Insufficient GL support"); return;}
if (!g && (mode_ & FL_DOUBLE) == FL_SINGLE) {
g = Fl_Gl_Choice::find(mode_ | FL_DOUBLE,alist);
if (g) mode_ |= FL_FAKE_SINGLE;
}
if (!g) {
Fl::error("Insufficient GL support");
return;
}
}
#if !defined(WIN32) && !defined(__APPLE__)
Fl_X::make_xid(this, g->vis, g->colormap);
@ -128,6 +137,10 @@ void Fl_Gl_Window::make_current() {
RealizePalette(fl_gc);
}
#endif // USE_COLORMAP
if (mode_ & FL_FAKE_SINGLE) {
glDrawBuffer(GL_FRONT);
glReadBuffer(GL_FRONT);
}
current_ = this;
}
@ -367,5 +380,5 @@ void Fl_Gl_Window::draw_overlay() {}
#endif
//
// End of "$Id: Fl_Gl_Window.cxx,v 1.12.2.22.2.12 2002/08/09 03:17:30 easysw Exp $".
// End of "$Id: Fl_Gl_Window.cxx,v 1.12.2.22.2.13 2002/10/15 20:45:58 easysw Exp $".
//