The following code in a Mac openFrameworks project was hanging occasionally when I controlled the point size via a slider box (graphic card = AMD FirePro D500):
glPointSize(scaledPointSize);
glBegin(GL_POINTS);
resulting in a hang in __psynch_mutexwait inside glBegin.
The hang doesn't arise as long as I don't let scaledPointSize exceed 30. So that is a fix — of sorts.
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