glFinish(3G) OpenGL Reference glFinish(3G)
glFinish - block until all GL execution is complete
void glFinish( void )
glFinish does not return until the effects of all previously 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
Such effects also include asynchronous GL commands, if the SGIX_async
extension is implemented.
glFinish requires a round trip to the server.
GL_INVALID_OPERATION is generated if glFinish is executed between the
execution of glBegin and the corresponding execution of glEnd.
The SGIX_async and SGIX_async_pixel extensions are implemented only on
Octane2 VPro systems.
glFlush, glXWaitGL, glXWaitX, glFinishAsyncSGIX
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