Re: [AD] Fullscreen problems on Linux

[Beoran <beoran@xxxxxxxxxx>]

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