1al_wait_for_vsync(3)       Library Functions Manual       al_wait_for_vsync(3)
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NAME

6       al_wait_for_vsync
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SYNOPSIS

9              #include <allegro5/allegro.h>
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11              bool al_wait_for_vsync(void)
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DESCRIPTION

14       Wait for the beginning of a vertical retrace.  Some driver/card/monitor
15       combinations may not be capable of this.
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17       Note how al_flip_display(3) usually  already  waits  for  the  vertical
18       retrace,  so unless you are doing something special, there is no reason
19       to call this function.
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21       Returns false if not possible, true if successful.
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SEE ALSO

24       al_flip_display(3)
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28Allegro reference manual                                  al_wait_for_vsync(3)