Hi,
Based on the wayland protocol specification for wl_surface::attach
>>If wl_surface.attach is sent with a NULL wl_buffer, the following
wl_surface.commit will remove the surface content.
Wondering if wl_surface_attach called with wl_buffer=NULL, will there be
any wl_buffer release event or frame callbacks?
Modified the redraw in simple-shm.c as below and not receiving any callback
or buffer release. It just got stuck.
The same thing is being done in qtwayland to hide the surface and it is
getting stuck. Some help to check this case would be helpful.
static int odd = 1;
if(odd == 1){
wl_surface_attach(window->surface, buffer->buffer, 0, 0);
wl_surface_damage(window->surface,
20, 20, window->width - 40, window->height -
40);
odd = 0;
}
else{
wl_surface_attach(window->surface, 0, 0, 0);
wl_surface_damage(window->surface,
0, 0, 0, 0);
odd=1;
}
[823379.816] -> [email protected]_surface(new id wl_surface@3)
[823379.949] -> [email protected]_xdg_surface(new id xdg_surface@7,
wl_surface@3)
[823380.120] -> [email protected]_title("simple-shm")
[823380.244] -> [email protected](0, 0, 250, 250)
[823381.333] -> [email protected]_pool(new id wl_shm_pool@8, fd 5, 250000)
[823381.561] -> [email protected]_buffer(new id wl_buffer@9, 0, 250,
250, 1000, 1)
[823381.870] -> [email protected]()
[823384.880] -> [email protected](wl_buffer@9, 0, 0)
[823385.095] -> [email protected](20, 20, 210, 210)
[823385.317] -> [email protected](new id wl_callback@10)
[823385.443] -> [email protected]()
[823388.852] [email protected]_id(8)
[823388.979] [email protected](0, 0, array, 4)
[823389.238] -> [email protected]_configure(4)
[823401.773] [email protected]_id(10)
[823401.908] [email protected]()
[823401.991] [email protected](4056537)
[823404.239] -> [email protected](nil, 0, 0)
[823404.442] -> [email protected](0, 0, 0, 0)
[823404.663] -> [email protected](new id wl_callback@10)
[823404.792] -> [email protected]()
[823406.292] [email protected](0, 0, array, 5)
[823406.524] -> [email protected]_configure(5)
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