[Mesa-dev] How to use gbm_surface_lock_front_buffer() ?

[Bie Tiwei]

Hi,

I made some changes in my code, and it works, but doesn't work
properly. There are obviously errors in my code, but I don't know to
how correct them. I commented out the gbm_surface_lock_front_buffer().
There is something covered the triangle near the top edge of the
monitor (screenshot is here:
https://lh5.googleusercontent.com/-aLG3NA3GDCg/T5oijbFymvI/AAAAAAAAABw/BE2Rept5ozg/s1419/IMAG0150.jpg),
and I have no idea to solve this problem. Any help would be greatly
appreciated !

Thanks and Best Regards
Bie Tiwei
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