why wi_surface_frame callback delay two frames

[Nancy Zou]

Hi all

My wayland/Weston version is 1.5.0.

I use wl_surface_frame to listen the frame done callback info. I get the frame 0 callback when the frame 2 is drawing. If I wait for frame 0 callback when drawing frame 1, the program is in dead loop.

Does this result is right? Is there any problem in my program? Thank you.

Best Regards
Nancy



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