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RedHat 9 (Linux i386) - man page for glxswapbuffers (redhat section 3x)

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
       immediately after glXSwapBuffers is called.

       glXSwapBuffers performs an implicit glFlush before it returns.  Subsequent OpenGL commands
       may  be	issued	immediately  after calling glXSwapBuffers, 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 multiple 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 synchroniza-
       tion.  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  identi-
       fies a window that is no longer valid.

SEE ALSO
       glFlush, glXBindSwapBarrierSGIX, glXJoinSwapGroupSGIX, glXSwapIntervalSGI

										 GLXSWAPBUFFERS()


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