c - String overlay using XftDrawString8 flickers when done along with video rendering using eglSwapBuffers -


i rendering video on egl (x11) using api eglswapbuffers. requirement text overlay on window. achieve using xftdrawstring8 using xft library. though working, reason text string flickers. seems string getting overlaid before video data , after video data. whenever gets overlaid before not seen, when overlaid after seen. can me solution achieve stable text overlay on video data without flickering issue? let me know if more information needed.


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