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Some Win32 drivers would draw into wrong buffers

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after OpenGL mode change.
After changing from single- to doublebuffered OpenGL, glClear would
write into the FRONbuffer and swap_buffers would not send a glFlush().
(nVidia GeForce2 MX/MX 400, 2560x1024 pixel, 16bit)


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@1805 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Matthias Melcher 2001-12-04 04:12:58 +00:00
parent 1d06051e8c
commit 1acca043df
1 changed files with 13 additions and 6 deletions
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19
src/Fl_Gl_Window.cxx
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@ -1,5 +1,5 @@
//
// "$Id: Fl_Gl_Window.cxx,v 1.12.2.22.2.1 2001/11/27 17:44:06 easysw Exp $"
// "$Id: Fl_Gl_Window.cxx,v 1.12.2.22.2.2 2001/12/04 04:12:58 matthiaswm Exp $"
//
// OpenGL window code for the Fast Light Tool Kit (FLTK).
//
@ -85,15 +85,21 @@ void Fl_Gl_Window::invalidate() {
int Fl_Gl_Window::mode(int m, const int *a) {
if (m == mode_ && a == alist) return 0;
#if !defined(WIN32) && !defined(__APPLE__)
#if !defined(__APPLE__)
int oldmode = mode_;
Fl_Gl_Choice* oldg = g;
#endif
context(0);
mode_ = m; alist = a;
if (shown()) {
g = Fl_Gl_Choice::find(m, a);
#if !defined(WIN32) && !defined(__APPLE__)
g = Fl_Gl_Choice::find(m, a);
#ifdef WIN32
if (!g || (oldmode^m)&FL_DOUBLE) {
hide();
show();
}
#endif
#if !defined(WIN32) && !defined(__APPLE__)
// under X, if the visual changes we must make a new X window (yuck!):
if (!g || g->vis->visualid!=oldg->vis->visualid || (oldmode^m)&FL_DOUBLE) {
hide();
@ -144,7 +150,8 @@ void Fl_Gl_Window::swap_buffers() {
#ifdef WIN32
# if HAVE_GL_OVERLAY
// Do not swap the overlay, to match GLX:
wglSwapLayerBuffers(Fl_X::i(this)->private_dc, WGL_SWAP_MAIN_PLANE);
BOOL ret = wglSwapLayerBuffers(Fl_X::i(this)->private_dc, WGL_SWAP_MAIN_PLANE);
DWORD err = GetLastError();;
# else
SwapBuffers(Fl_X::i(this)->private_dc);
# endif
@ -340,5 +347,5 @@ void Fl_Gl_Window::draw_overlay() {}
#endif
//
// End of "$Id: Fl_Gl_Window.cxx,v 1.12.2.22.2.1 2001/11/27 17:44:06 easysw Exp $".
// End of "$Id: Fl_Gl_Window.cxx,v 1.12.2.22.2.2 2001/12/04 04:12:58 matthiaswm Exp $".
//