Gets the presentation time for the frame.
This is the time at which the frame became visible to the user.
The presentation time measured in nanoseconds is based on a monotonic time source. The time source is not necessarily correlated with system/wall clock time and may represent the time elapsed since some undefined system event such as when the system last booted.
<note>Linux kernel version less that 3.8 can result in non-monotonic timestamps being reported when using a drm based OpenGL driver. Also some buggy Mesa drivers up to 9.0.1 may also incorrectly report non-monotonic timestamps.</note>
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a FrameInfo object |
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the presentation time for the frame |