opengl: glFlush() vs. glFinish()

Question

I\'m having trouble distinguishing the practical difference between calling glFlush() and glFinish().

The docs say that glFlush()

Answer 1

The question is: do you want your code to continue running while the OpenGL commands are being executed, or only to run after your OpenGL commands has been executed.

This can matter in cases, like over network delays, to have certain console output only after the images have been drawn or the such.