- block until all GL execution is complete



C SPECIFICATION


DESCRIPTION

       glFinish  does  not return until the effects of all previ-
       ously called  GL  commands  are  complete.   Such  effects
       include all changes to GL state, all changes to connection
       state, and all changes to the frame buffer contents.


NOTES

       glFinish requires a round trip to the server.


ERRORS

       GL_INVALID_OPERATION is generated if glFinish is  executed
       between  the  execution  of  glBegin and the corresponding
       execution of glEnd.


SEE ALSO

       glFlush




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