void gtk_gl_area_attach_buffers ( GtkGLArea* area )
Binds buffers to the framebuffer.
Ensures that the
area framebuffer object is made the current draw
and read target, and that all the required buffers for the
are created and bound to the framebuffer.
This function is automatically called before emitting the
GtkGLArea::render signal, and doesn’t normally need to be
called by application code.