Re: [AD] RFC - Linux WM Fullscreen Patch

[SiegeLordEx <slabode@xxxxxxxxxx>]

Apologies if this is obvious from the patch (I still only glanced at 
it), but I was under the impression that 'virtual fullscreen' was merely 
'fullscreen window' with some letter-boxing transformations? If so, why 
is there a difference between the two?

If there is a difference, does the 'virtual fullscreen' work all the 
time without compositing too?

-SL

On 08/07/2014 11:25 AM, Trent Gamblin wrote:
> Ok. I've already decided yesterday I'll probably abandon this patch anyway,
> but if it's possible and worthwhile to fix who knows.
>
> The problem is with all three fullscreen types there are problems on Linux.
>
> 1) Real fullscreen
> KDE: shifted to top left corner
> Unity: Needs CCSM installed and switch toggled
> XFCE: works
>
> 2) Fullscreen window
> KDE: Hangs the entire system
> Unity: Can't alt-tab out
> XFCE: works
>
> 3) Virtual fullscreen
> KDE: shifted up about 20 pixels
> Unity: works
> XFCE: works sometimes depending on panel positions
>
> It's freaking disgusting. The only thing that actually works is if you
> disable compositing, then fullscreen window basically works.
>
> ----- Original Message -----
> From: "SiegeLordEx" <slabode@xxxxxxxxxx>
> To: <alleg-developers@xxxxxxxxxx>
> Sent: Thursday, August 07, 2014 9:19 AM
> Subject: Re: [AD] RFC - Linux WM Fullscreen Patch
>
>
> > On 08/07/2014 11:12 AM, SiegeLordEx wrote:
> > > On 08/07/2014 10:52 AM, Trent Gamblin wrote:
> > > > Primitives and transforms have always been different for me. Paul,
> > > > what's the reason behind this? For example scaling everything up still
> > > > results in crisp lines etc?
> > >
> > > Of course it does, primitives are drawn using polygons and they are
> > > going to use screen pixels (i.e. the actual resolution). It's impossible
> > > to emulate a scaled mode setting with transformations with respect to
> > > how the primitives are drawn.
> > >
> > > That's why you always use an intermediate bitmap that you then scale up
> > > if you want large pixels with your primitives. If you really want a
> > > virtual mode in Allegro, that is the method you need to use.
> > >
> > > -SL
> >
> > I should note that this is not unique to primitives, since bitmaps are
> > drawn using polygons as well. E.g. drawing a bitmap at fractional
> > coordinates will look different on a virtual fullscreen and a real mode.
> > This is even more easily seen with rotated bitmaps.
> >
> > -SL
> >
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