glXSwapBuffers -- exchange front and back buffers
void glXSwapBuffers(Display *dpy,
Specifies the connection to the X server.
Specifies the window whose buffers are to be swapped.
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. All GLX rendering contexts
share the same notion of which are front buffers and which are back buffers.
An implicit glFlush is done by
glXSwapBuffers before it returns. Subsequent OpenGL commands can 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.
Synchronization of multiple GLX contexts rendering to the same double-buffered
window is the responsibility of the clients. The X Synchronization Extension
can be used to facilitate such cooperation.
GLX_BAD_DRAWABLE is generated if drawable is not a valid
GLX_BAD_CURRENT_WINDOW 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
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© 1995 Uwe Behrens All rights reserved