Initializes and resets frame time tracking. This is typically not necessary, but is helpful if game changes vsync state or video mode. vsync is assumed to be on if this isn't called. Resets internal frame index to the specified number.
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Initializes and resets frame time tracking. This is typically not necessary, but is helpful if game changes vsync state or video mode. vsync is assumed to be on if this isn't called. Resets internal frame index to the specified number.