FrameInterval : double uno
Returns the number of seconds between the beginning of this frame and the beginning of last frame.
A global stopwatch timer that has time=0 when the app launched
Returns the number of seconds between the beginning of this frame and the beginning of last frame.
Same as FrameInterval, in single precision.
Returns the number of seconds from the app started to the beginning of the current frame.
The timestamp (in seconds) used as base for this timer