alarantalara@gmail.com 2011-12-19 20:43:13 PST
On little endian systems using the Quartz code, an unusual set of RBGA masks is
used when using the windowed video mode.
This set is not taken into account in SDL_DisplayFormatAlpha and so it converts
the supplied surface to a format that does not match the video surface,
preventing fast blitting.
This was observed in recent builds of Battle for Wesnoth when SDL was updated
to cover the problem when switching to full screen in Lion
(https://gna.org/bugs/?18319).
You can observe the performance issue if you download Wesnoth 1.9.13 for OS X
at
http://sourceforge.net/projects/wesnoth/files/wesnoth/wesnoth-1.9.13/Wesnoth_1.9.13.dmg/download
and replace the included SDL library with any build of SDL 1.2.14 or later. (I
have already patched the included version, so the problem is not observable
without replacement.)
A patch resolving the issue is attached.
--HG--
branch : SDL-1.2
zicodxx@gmx.de 2010-07-28 12:59:27 PDT
Again another bug I encountered on Windows 7:
Assuming I hide my mouse cusor with SDL_ShowCursor(SDL_DISABLE).
Now if my app runs on Fullscreen, I tend to "get out" of it using ALT+TAB. This
will minimize the app. However SDL_GetAppState will STILL report SDL_APPACTIVE,
SDL_APPINPUTFOCUS and SDL_APPMOUSEFOCUS.
Also if I check event.active.gain, this *seems* (as much as I could find out)
to be set twice (first 0 then 1 again) while going out of the app with ALT+TAB.
I am not perfectly sure here but even if the app is minimized because of
ALT+TAB (or also CTRL+ESC), event.active.gain is 1.
Alex Volkov 2011-04-28 17:19:26 PDT
This happens with the windib driver. Windows posts the WM_ACTIVATE WA_INACTIVE
event with minimized==false when you Alt+Tab out of a fullscreen app.
Responding to this event, wincommon/SDL_sysevents.c:WinMessage() calls
ShowWindow(,SW_MINIMIZE) via SDL_RestoreDesktopMode, but another WM_ACTIVATE
event is not posted in response to that.
Whatever the case may be, WinMessage() should just treat a fullscreen app
receiving WA_INACTIVE the same as a minimized app. Additionally, it's probably
a good idea to clear SDL_APPMOUSEFOCUS at the same time, and that should take
care of bug #1035.
--HG--
branch : SDL-1.2
Matthias Hawran 2010-07-28 03:00:49 PDT
Hi,
I simply want to "forward" this post
(http://forums.libsdl.org/viewtopic.php?t=4123) about absolute mouse events not
being monitored by SDL 1.2 as directfb / tslib generates them.
It's fixed in 1.3 and IMHO it should be backported to 1.2
Included the patch from the post (thanks to Guillaume Chereau)
Cheers,
Matthias
--HG--
branch : SDL-1.2
In X11_CreateYUVOverlay hwdata->image will be accessed after it has been
freed, causing undefined behavior. Exchanging two lines as shown in this
patch will fix that problem:
Regards, Bodo
--HG--
branch : SDL-1.2
Don't ever leave it to the OS to decide, because older ATI drivers apparently
break in this case, and generally apps want FULL by default anyhow.
--HG--
branch : SDL-1.2
The new code happened to (supposedly) work everywhere, but it is way slower
on older Mac OS X releases that could get away with using the now
deprecated/removed APIs, so now both implementations are available, and SDL
should choose the right path based on compile options and OS version at
runtime.
Fun stuff.
--HG--
branch : SDL-1.2
