glFinish

glFinish: block until all GL execution is complete.

C Specification | Description | Notes | Errors | See Also

C Specification

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.

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.