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Commit b4d4fc8f authored by Arseny Kapoulkine's avatar Arseny Kapoulkine Committed by Camilla Berglund
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Optimize _glfwInitJoysticks on OS X.

This function used to enumerate all devices and capture all properties
of every device into a dictionary. This takes 180 ms on a MacBook Pro
without external devices and 280 ms with an external keyboard/mouse
attached.

Since we're only interested in a few properties, we can just get them
one by one - this reduces the time to <1 ms.

Note that we still use the dictionary to get the joystick elements.
For unknown reason this is required to get all axes/buttons - without
doing this we don't get any joystick elements in addJoystickElement.

Closes #332.
parent 3b7d34a1
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