Re: [AD] Fullscreen problems on Linux

[beoran@xxxxxxxxxx]

I also tried it with SDL using wm full screen setting and there it
works on xfwm4. I debugged it to be sure it took that code path. So
likely there's is some detail we're misssing. I'll check it out more
later.

Kind Regards,

B.

On 7/7/14, beoran@xxxxxxxxxx <beoran@xxxxxxxxxx> wrote:
> On xubuntu under xfwm4, it doesn't work well, a "full screen" is set,
> however, that full screen ends up cntered on the upper left of my
> screen and the rest of old desktop is still visible. If I replace the
> xfwm4 with compiz, then I do get a full screen window, but the
> resolution is not adjusted to 640x480 which is the size of the window
> I requested. If I disable the patch and use the old XRANR mode setting
> it all works fine.
>
> Probably some subtle details must be set in order for xfwm4 to do the
> fullscreen correctly, since it does advertise fullscreen support. I'll
> try to play with it a bit tomorrow and see if I can't get it to work.
>
> Also, I noticed that the fucntion that checks of support for net wm
> resolution changing isn't quite correct (also not in SDL for that
> matter)?. Now, we just check if a _new_wm supporting WM is there, but
> we also need to check the  _NET_WM_ALLOWED_ACTIONS atom for
> _NET_WM_ACTION_FULLSCREEN. See here for more details:
> http://standards.freedesktop.org/wm-spec/1.3/ar01s05.html#idm140238712303632
>
> Maybe the way of switching to fullscreen will need to be made
> configurable though allegro.cfg as well, seeing that someWMs seem to
> support fullcreen setting incorrectly or differently than others.
>
> Kind Regards,
>
> B.
>
> On 7/7/14, Trent Gamblin <trent@xxxxxxxxxx> wrote:
>> To test it change ex_bitmap.c to have
>> al_set_new_display_flags(ALLEGRO_FULLSCREEN) before al_create_display.
>> Optionally change the display size.
>>
>> On 2014-07-07 11:49 AM, Trent Gamblin wrote:
>>> I had another go at it. The problem was again CMake. This time it
>>> works, but I'd like if as many people as possible can test on
>>> different WMs. I tested the defaults (Metacity?, Compiz) on Ubuntu
>>> 10.04 and 14.04. Patch attached.
>>>
>>> Thanks,
>>> Trent
>>>
>>> On 14-07-07 10:24 AM, Trent Gamblin wrote:
>>>> OK, I thought that might be how it worked which is why I started
>>>> working
>>>> on it.The problem I ran into was probably the same thing that prevented
>>>> the old way of working (CMake not picking up deps) so I might try it
>>>> again later on.
>>>>
>>>> Trent
>>>>
>>>> On 2014-07-07 10:12 AM, Beoran wrote:
>>>>> I checked the SDL code again, and no, this seems to be a different
>>>>> code path
>>>>> from their fullscreen window which they call
>>>>> SDL_WINDOW_FULLSCREEN_DESKTOP.
>>>>>
>>>>> The way mode switching through the vm is supposed to work is that you
>>>>> set a
>>>>> _NET_WM_STATE_FULLSCREEN on the _NET_WM_STATE property, and the window
>>>>> manager
>>>>> is supposed to pick that up, switch to a full-screen resolution equal
>>>>> to that of your window
>>>>> size and treat your window as a fullscreen one. Supposedly, the WM
>>>>> should
>>>>> set full screen even if the window isn't of a correct size, arguably
>>>>> to the supported mode
>>>>> with size closest the window's size.
>>>>>
>>>>> So in theory you don't have to know which modes are supported
>>>>> by the hardware.... Of course, far from all windows managers support
>>>>> this, and if they do,
>>>>> the results are mixed, and the window managers disagree on whether the
>>>>> window should be resizable
>>>>> for them to resize it or not. But compiz apparently supports this
>>>>> correctly if you do
>>>>> make the window resizable.
>>>>>
>>>>> However for determining the available video modes SDL still uses
>>>>> either XRandr
>>>>> or Xinerama independent of whether it uses the WM for switching modes
>>>>> or not.
>>>>> So , we can still get the mode list from XRandr and use that.
>>>>> You can look in SDL_x11modes.c for the nitty gritty.
>>>>>
>>>>> Kind Regards,
>>>>>
>>>>> B.
>>>>>
>>>>>
>>>>> Op 07-07-14 17:17, Trent Gamblin schreef:
>>>>>> I'm not sure that what SDL is doing there isn't what we call
>>>>>> fullscreen
>>>>>> window.
>>>>>>
>>>>>> Anyhow, two things. First I found out that CMake was screwing up
>>>>>> and not
>>>>>> picking up some headers or libraries so it works as before now.
>>>>>> Second, I
>>>>>> assumed it wasn't fullscreen window and started implementing it
>>>>>> anyway but
>>>>>> there's no way to get a mode list anyway so it failed there.
>>>>>>
>>>>>> Trent
>>>>> ------------------------------------------------------------------------------
>>>>>
>>>>>
>>>>> Open source business process management suite built on Java and
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>>>> ------------------------------------------------------------------------------
>>>>
>>>>
>>>> Open source business process management suite built on Java and Eclipse
>>>> Turn processes into business applications with Bonita BPM Community
>>>> Edition
>>>> Quickly connect people, data, and systems into organized workflows
>>>> Winner of BOSSIE, CODIE, OW2 and Gartner awards
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>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Open source business process management suite built on Java and Eclipse
>>> Turn processes into business applications with Bonita BPM Community
>>> Edition
>>> Quickly connect people, data, and systems into organized workflows
>>> Winner of BOSSIE, CODIE, OW2 and Gartner awards
>>> http://p.sf.net/sfu/Bonitasoft
>>>
>>>
>>
>>
>