[Libva] VaSurface coping

[Sergey Omelchenko]

1. Is it possible to copy one surface content to another without cpu memory
mapping?
I am trying:
VAImage va_img;
vaDeriveImage(va_display,va_surf_1,&va_image);
vaPutImage(va_display,va_surf_2,va_img.image_id,.....);
But, va_surf_2 still empty.

2. Is it possible to copy opengl PBO content to vaapi surface without cpu
memory mapping?
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