void glutSwapBuffers(void)
{
glFlush();
if(!(DisplayMode & GLUT_DOUBLE))
return;
if(ActiveMenu)
DrawMenus();
DrawCursor();
if(Visible) {
Swapping = 1;
glFBDevSwapBuffers(Buffer);
Swapping = 0;
}
/* if there was a vt switch while swapping, switch now */
if(VTSwitch) {
if(ioctl(ConsoleFD, VT_ACTIVATE, VTSwitch) < 0)
sprintf(exiterror, "Error switching console\n");
VTSwitch = 0;
}
}
void glutMainLoop(void)
{
int idleiters;
if(ReshapeFunc)
ReshapeFunc(VarInfo.xres, VarInfo.yres);
if(!DisplayFunc) {
sprintf(exiterror, "Fatal Error: No Display Function registered\n");
exit(0);
}
for(;;) {
ProcessTimers();
if(Active)
ReceiveInput();
else
if(VisiblePoll)
TestVisible();
if(IdleFunc)
IdleFunc();
if(VisibleSwitch) {
VisibleSwitch = 0;
if(VisibilityFunc)
VisibilityFunc(Visible ? GLUT_VISIBLE : GLUT_NOT_VISIBLE);
}
if(Resized) {
SetVideoMode();
CreateBuffer();
if(!glFBDevMakeCurrent( Context, Buffer, Buffer )) {
sprintf(exiterror, "Failure to Make Current\n");
exit(0);
}
InitializeMenus();
if(ReshapeFunc)
ReshapeFunc(VarInfo.xres, VarInfo.yres);
Redisplay = 1;
Resized = 0;
}
if(Visible && Redisplay) {
Redisplay = 0;
EraseCursor();
DisplayFunc();
if(!(DisplayMode & GLUT_DOUBLE)) {
if(ActiveMenu)
DrawMenus();
DrawCursor();
}
idleiters = 0;
} else {
/* we sleep if not receiving redisplays, and
the main loop is running faster than 2khz */
static int lasttime;
int time = glutGet(GLUT_ELAPSED_TIME);
if(time > lasttime) {
if(idleiters >= 2)
usleep(100);
idleiters = 0;
lasttime = time;
}
idleiters++;
}
}
}
void DrawMainMenu(){
DrawMenus();
DrawMouse();
}