GLXSWAPBUFFERS()														  GLXSWAPBUFFERS()

NAME

       glXSwapBuffers - exchange front and back buffers

C SPECIFICATION

       void glXSwapBuffers( Display *dpy,
			    GLXDrawable drawable )

       delim $$

PARAMETERS

       dpy	 Specifies the connection to the X server.

       drawable  Specifies the drawable whose buffers are to be swapped.

DESCRIPTION

       glXSwapBuffers  promotes  the contents of the back buffer of drawable to become the contents of the front buffer of drawable.  The contents
       of the back buffer then become undefined.  The update typically takes place during the vertical retrace of the monitor, rather than immedi-
       ately after glXSwapBuffers is called.

       glXSwapBuffers performs an implicit glFlush before it returns.  Subsequent OpenGL commands may be issued immediately after calling glXSwap-
       Buffers, but are not executed until the buffer exchange is completed.

       If drawable was not created with respect to a double-buffered visual, glXSwapBuffers has no effect, and no error is generated.

NOTES

       The contents of the back buffer become undefined after a swap. Note that this applies to pbuffers as well as windows.

       All GLX rendering contexts share the same notion of which are front buffers and which are back buffers.	One consequence is that when  mul-
       tiple  clients  are rendering to the same double-buffered window, all of them should finish rendering before one of them issues the command
       to swap buffers.  The clients are responsible for implementing this synchronization.  Typically this is accomplished by executing  glFinish
       and then using a semaphore in shared memory to rendezvous before swapping.

ERRORS

       GLXBadDrawable is generated if drawable is not a valid GLX drawable.

       GLXBadCurrentWindow  is	generated if dpy and drawable are respectively the display and drawable associated with the current context of the
       calling thread, and drawable identifies a window that is no longer valid.

SEE ALSO

       glFlush, glXBindSwapBarrierSGIX, glXJoinSwapGroupSGIX, glXSwapIntervalSGI

																  GLXSWAPBUFFERS()