| Re: [AD] Fullscreen problems on Linux |
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Trent On 2014-07-07 2:18 PM, beoran@xxxxxxxxxx wrote:
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 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------------------------------------------------------------------------------ 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------------------------------------------------------------------------------ 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------------------------------------------------------------------------------ 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
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