weston-simple-egl fullscreen broken?

[Daniel Stone]

Hi Arnaud,

On 27 February 2017 at 23:12, Arnaud Vrac <rawoul at gmail.com> wrote:
> On Mon, Feb 27, 2017 at 11:18 PM Daniel Stone <daniel at fooishbar.org> wrote:
>> On 6 February 2017 at 16:56, Fabien DESSENNE <fabien.dessenne at st.com> wrote:
>> > I remember I used to get « weston-simple-egl -f » working fine.
>> > But it does not work anymore : nothing is displayed. From the logs I can see
>> > (among others) zxdg_toplevel_v6.configure and wl_surface.commit
>> > Testing with another client works fine: weston-terminal -f -> OK
>> > There may be something wrong with my environment since I am testing with the
>> > Daniel’s atomic version (forked from weston-1.12.0+), but I guess this is
>> > broken also with the official version.
>> > If anyone can make a quick test and let me know.
>>
>> This also works fine for me, both upstream and on the atomic branch;
>> it's one of the main tests I do.
>
> I remember that weston-simple-egl -f was broken when using software
> rendering in mesa. From my irc log:
>
> 21:56:01< rawoul> 'weston-simple-egl -f' is also broken with
> LIBGL_ALWAYS_SOFTWARE=1 on libweston-desktop... That's a mesa bug
> though, the first commited buffer does not use the size sent in the
> configure event
> 22:02:04< SardemFF7> not sure it’s a mesa bug
> 22:04:32< SardemFF7> mesa doesn’t know about the shell protocol, and
> that’s a requirement from xdg_shell_v6
> 22:05:16< rawoul> SardemFF7: the client does properly calls
> wl_egl_window_resize with the correct size before the first call to
> eglSwapBuffers. It actually works with dri2, but it seems swrast
> defers the resize

I'm pretty sure that Fabien is using a real GL driver; software GL
would never make it to scanout as it's a SHM buffer. Either way, I'm
pretty sure this bug is fixed in Mesa 17.0. :)

Cheers,
Daniel