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Re: [Qemu-devel] [PATCH 1/8] sdl2: Fix broken display updating after the

From: Max Reitz
Subject: Re: [Qemu-devel] [PATCH 1/8] sdl2: Fix broken display updating after the window is hidden
Date: Mon, 13 Nov 2017 17:35:03 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0

On 2017-11-13 13:39, Gerd Hoffmann wrote:
> On Sun, Nov 12, 2017 at 08:30:25PM +0100, Jindrich Makovicka wrote:
>> With SDL 2.0.6, calling SDL_ShowWindow during SDL_WINDOWEVENT_HIDDEN
>> blocks all subsequent display updates.
>> Instead of trying to override the change, just update the scon->hidden
>> flag.
> Has for me the side effect that sometimes I have to press ctrl-alt-2
> twice.  Showing window first time works.  Hiding the window works too.
> Showing it the second time needs the double keypress.
> Added fprintfs to figure why [1].  Reason for that seems to be a suspious
> SDL_WINDOWEVENT_SHOWN event from SDL, so qemu thinks the window is
> visible even though it actually is hidden.
> Have a slightly older SDL version (2.0.3).  Do you see that effect with
> 2.0.6 too?
> cheers,
>   Gerd
> https://www.kraxel.org/cgit/qemu/commit/?h=testing/sdl&id=8235bfb66e7c82870ff1b1f47bdaaf4f522c5444

The only thing I can say is that I submitted
https://bugzilla.libsdl.org/show_bug.cgi?id=2818 as a result.  Nobody
has replied to that in three years, but when testing it on SDL 2.0.7,
the issue appears to be fixed.


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