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