Re: [PULL 0/6] Egl 20211105 patches

[Philippe Mathieu-Daudé]

On 11/8/21 10:41, Mark Cave-Ayland wrote:
> On 08/11/2021 09:22, Daniel P. Berrangé wrote:
> 
>> On Mon, Nov 08, 2021 at 09:17:19AM +0100, Philippe Mathieu-Daudé wrote:
>>> +Thomas & Daniel for Travis-CI
>>>
>>> On 11/8/21 09:12, Mark Cave-Ayland wrote:
>>>> On 05/11/2021 18:49, Philippe Mathieu-Daudé wrote:
>>>>> On 11/5/21 19:26, Philippe Mathieu-Daudé wrote:
>>>>>> On 11/5/21 18:13, Richard Henderson wrote:
>>>>>>> On 11/5/21 7:30 AM, Gerd Hoffmann wrote:
>>>>>>>> The following changes since commit
>>>>>>>> b1fd92137e4d485adeec8e9f292f928ff335b76c:
>>>>>>>>
>>>>>>>>      Merge remote-tracking branch
>>>>>>>> 'remotes/bonzini/tags/for-upstream'
>>>>>>>> into staging (2021-11-03 13:07:30 -0400)
>>>>>>>>
>>>>>>>> are available in the Git repository at:
>>>>>>>>
>>>>>>>>      git://git.kraxel.org/qemu tags/egl-20211105-pull-request
>>>>>>>>
>>>>>>>> for you to fetch changes up to
>>>>>>>> 1350ff156b25be65c599ecca9957ce6726c6d383:
>>>>>>>>
>>>>>>>>      ui/gtk-egl: blitting partial guest fb to the proper scanout
>>>>>>>> surface
>>>>>>>> (2021-11-05 12:29:44 +0100)
>>>>>>>>
>>>>>>>> ----------------------------------------------------------------
>>>>>>>> gtk: a collection of egl fixes.
>>>>>>>>
>>>>>>>> ----------------------------------------------------------------
>>>>>>>>
>>>>>>>> Dongwon Kim (6):
>>>>>>>>      virtio-gpu: splitting one extended mode guest fb into
>>>>>>>> n-scanouts
>>>>>>>>      ui/gtk-egl: un-tab and re-tab should destroy egl surface and
>>>>>>>> context
>>>>>>>>      ui/gtk-egl: make sure the right context is set as the current
>>>>>>>>      ui/gtk-egl: guest fb texture needs to be regenerated when
>>>>>>>>        reinitializing egl
>>>>>>>>      ui/gtk: gd_draw_event returns FALSE when no cairo surface
>>>>>>>> is bound
>>>>>>>>      ui/gtk-egl: blitting partial guest fb to the proper scanout
>>>>>>>> surface
>>>>>>>>
>>>>>>>>     include/hw/virtio/virtio-gpu.h        |  5 +++--
>>>>>>>>     include/ui/console.h                  |  4 ++++
>>>>>>>>     hw/display/virtio-gpu-udmabuf-stubs.c |  3 ++-
>>>>>>>>     hw/display/virtio-gpu-udmabuf.c       | 22
>>>>>>>> ++++++++++++++--------
>>>>>>>>     hw/display/virtio-gpu.c               |  4 ++--
>>>>>>>>     ui/egl-helpers.c                      | 25
>>>>>>>> +++++++++++++++++++++----
>>>>>>>>     ui/gtk-egl.c                          | 10 ++++++++++
>>>>>>>>     ui/gtk.c                              | 23
>>>>>>>> +++++++++++++++++++++++
>>>>>>>>     8 files changed, 79 insertions(+), 17 deletions(-)
>>>>>>>
>>>>>>> Applied, thanks.
>>>>>>
>>>>>> Ubuntu 18.04.4 LTS:
>>>>>>
>>>>>> ui/gtk-egl.c:159:13: error: implicit declaration of function
>>>>>> 'egl_dmabuf_release_texture' is invalid in C99
>>>>>> [-Werror,-Wimplicit-function-declaration]
>>>>>>               egl_dmabuf_release_texture(vc->gfx.guest_fb.dmabuf);
>>>>>>               ^
>>>>>> ui/gtk-egl.c:159:13: error: this function declaration is not a
>>>>>> prototype
>>>>>> [-Werror,-Wstrict-prototypes]
>>>>>> 2 errors generated.
>>>>>>
>>>>>> https://app.travis-ci.com/gitlab/qemu-project/qemu/builds/241272737
>>>>>>
>>>>>
>>>>> This seems to fix but I have no clue whether it is correct:
>>>>>
>>>>> -- >8 --
>>>>> diff --git a/ui/gtk-egl.c b/ui/gtk-egl.c
>>>>> index f2026e4b5c9..45cb67712df 100644
>>>>> --- a/ui/gtk-egl.c
>>>>> +++ b/ui/gtk-egl.c
>>>>> @@ -156,8 +156,10 @@ void gd_egl_refresh(DisplayChangeListener *dcl)
>>>>>                surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
>>>>>            }
>>>>> +#ifdef CONFIG_GBM
>>>>>            if (vc->gfx.guest_fb.dmabuf) {
>>>>>                egl_dmabuf_release_texture(vc->gfx.guest_fb.dmabuf);
>>>>>                gd_egl_scanout_dmabuf(dcl, vc->gfx.guest_fb.dmabuf);
>>>>>            }
>>>>> +#endif
>>>>>        }
>>>>>
>>>>> ---
>>>>
>>>> I see the same error here trying to build QEMU git master on Debian
>>>> Buster (oldstable). The fix looks reasonable to me in that it matches
>>>> the CONFIG_GBM guards around other similar functions and the resulting
>>>> binary appears to work, so:
>>>>
>>>> Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
>>>
>>> Thank you, I'll post a formal patch then.
>>>
>>> I wonder why this got merged while this configuration is covered in
>>> Travis-CI. Is it that we have a too high failure rate than we don't
>>> use it anymore?
>>
>> I've not looked at travis in ages what matters is GitLab CI, and there
>> the problem is that we're building ubuntu 20.04 not 18.04 so didn't
>> catch the older problem.
>>
>> I don't know what Mark sees a problem on Debian Buster though, as we
>> successfully built there AFAICT
>>
>>     https://gitlab.com/qemu-project/qemu/-/jobs/1756202449
> 
> That's interesting. Below is the configure output from my laptop which
> was generated with "./configure --target-list=m68k-softmmu
> --prefix=/home/build/rel-qemu-git":
...
> Run-time dependency gbm found: NO (tried pkgconfig)

>   Dependencies
>     SDL support                  : YES
>     SDL image support            : NO
>     GTK support                  : YES
>     pixman                       : YES 0.36.0

>     iconv support                : YES
>     curses support               : YES
>     virgl support                : NO

>     OpenGL support               : YES
>     GBM                          : NO

> 
> I tend to use GTK most of the time, so maybe related to SDL/virgl?