Sort the DirectX video modes largest to smallest

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The attached files allow building the SDL library and tests with the Open
Watcom compiler for Windows:
- static library or DLL
- Debug or Release builds available
- uses register calling convention of Open Watcom
- wmake target to build the SDL test samples

Following is a table that shows what works and what doesn't, yet:
checkkeys       +
graywin         +
loopwave        +
testalpha       +
testbitmap      +
testdyngl       +
testerror       +
testfile        +
testgamma       +
testgl          +
testhread       +
testiconv       - (all failed)
testkeys        +
testlock        + (after removing calls to raise() from signal handler)
testoverlay     + (needs 'set SDL_VIDEODRIVER=directx')
testoverlay2    + (-"-)
testpalette     +
testplatform    +
testsem         +
testsprite      +
testtimer       +
testver         +
testvidinfo     +
testwin         - (fading doesn't seem right)
testwm          +
torturethread   +
testcdrom       +
testjoystick    not tested
threadwin       +

TODO:
- make stack calling convention work (has linking issues with dxguid.lib)
- perform testjoystick (I don't have a joystick)
- investigate fading in testwin
- merge with OS/2 port
- add DOS target

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The current SVN trunk is missing the SDLCALL specifier at numerous locations.

It has to be added for all (possibly user provided) callbacks.

I stumbled over this while creating a makefile for the OpenWatcom compiler for
Win32.

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Date: 21 Apr 2003 17:20:20 +0100
From: Alan Swanson <swanson@uklinux.net>
Subject: [SDL] New XFree 4.3 Video Mode Patch


If you look at the unsorted list of modes returned by X, here's mine;

 1280 x 1024 @ 85.0  >
 1024 x 768 @ 100.3  > USER
 800 x 600 @ 125.5   > SET
 640 x 480 @ 124.9   >
 1280 x 1024 @ 75.0  ]
 1280 x 1024 @ 60.0  ]
 1280 x 960 @ 85.0   ] X11
 1280 x 960 @ 60.0   ] AUTO
 1152 x 864 @ 75.0   ]=20
 1152 x 768 @ 54.8   ]
 960 x 720 @ 120.0   ]
...
 640 x 400 @ 85.1    ] 256k
 576 x 432 @ 150.0   ] 249k PIXEL
 640 x 350 @ 85.1    ] 224k COUNT
 576 x 384 @ 109.6   ] 221k
...

The user set modes come first followed by X set modes which are ordered
by decreasing number of pixels and refresh.

The reason why every other library or program not using SDL working is
due to SDL scanning the modes in reverse getting X11 provided modes
modes with the lowest refresh.

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Use the title and icon stored in the SDL video info, when creating X11 windows.

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Improved Xinerama support.
Added support for the SDL_VIDEO_FULLSCREEN_HEAD environment variable, currently supported on X11 Xinerama configurations.
Only use the VidMode extension on the primary head.

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From: Doodle
Subject: Re: SDL OS/2 build updated?

It seems that I made a mistake in the previous Watcom makefile, leaving
out some .c files from linking, this is now fixed, and everything builds
well now.

Doodle

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From: Rob
Subject: [SDL] SDL pre-release

OpenGL fails on the zipped pre-release source accessible from
http://www.libsdl.org/svn.php.

Appears to be following lines in sdl_wing.c (lines 341-345):

wglext = (const char *)this->glGetString(GL_EXTENSIONS);
    if ( !SDL_strstr(wglext, "WGL_EXT_swap_control") ) {
        this->gl_data->wglSwapIntervalEXT = NULL;
        this->gl_data->wglGetSwapIntervalEXT = NULL;
    }

glGetString is a null pointer, as are other gl function pointers, so call
fails.  Never looked at sdl source before, so no further than that as yet.

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Created an attachment (id=106) [edit]
Patch for src/joystick/win32/SDL_mmjoystick.c

I am not even a Windows user, so take the following with a grain of salt:

SDL_mmjoystick.c  has a function GetJoystickName which obtains the joystick
name by looking at the registry. The way it does that seems very fishy to me.
Namely, it uses the parameter "index" to construct a registry value name (BTW,
those variables used in the code are really badly named). The value of "index"
in turn equals the current value of "numdevs", as called from
SDL_SYS_JoystickInit.

I read through the MSDN docs at
<http://msdn.microsoft.com/archive/default.asp?url=/archive/en-us/dnarinput/html/msdn_extdirect.asp>,
and I believe the simple fix is to replace line 183 of said file
  SYS_JoystickName[numdevs] = GetJoystickName(numdevs, joycaps.szRegKey);
by the following:
  SYS_JoystickName[numdevs] = GetJoystickName(SYS_JoystickID[i],
joycaps.szRegKey);

However, that is only *hiding* the real issue. Problem is, the list of
joysticks as returned by windows may contains "gaps", and the code deals
incorrectly with that. Namely those gaps occur if joysticks are
removed/(re)added, as the reporter observed.

The attached patch fixes this and another (off-by-one) issue in the code. But
since I have no Windows machine, I can't even test-compile it, so use with
caution.

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Disable the XRandR extension by default, since KDE maximizes windows which are larger than the new resolution, and then doesn't restore their size and positition when the old resolution is restored.
The extension can be enabled with the environment variable SDL_VIDEO_X11_XRANDR=1

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> BTW, when setting up parallel make, I usually use # cpus + 1, so a compile is
> running while disk access is going for another.

[From Ryan]
My experience is that this works well on Linux, but is actually slower on
PowerPC Mac OS X...not sure if that's an architecture issue or a scheduler
issue, though, and haven't tried it on Intel Mac OS X.

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- A change to define CXX in fatbuild, which comforts the configure script a little, even if we don't use C++ anywhere.
- Some code to see how many CPU cores exist and parallelize make across them.
- CFLAGS that apply to both archs are specified seperately (-O3, -pipe, etc)
- -fvisibility=hidden for the gcc4 builds
- a "clean", "clean-ppc" and "clean-x86" command
- Fix to SDL_config_macosx.h for the HAVE_ALLOCA_H thing.

Now builds on an Intel Mac.

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If we lose focus at all, unlock the mouse.

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Added SDL_GL_ACCELERATED_VISUAL to guarantee hardware acceleration.

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Date: Mon, 21 Mar 2005 12:06:14 +0100
From: Per Inge Mathisen
Subject: Re: [SDL] Outstanding patches?

The patch adds support for setting SDL_GL_SWAP_CONTROL to Windows and
X11. In Windows you can also query this enum to check that it is
working, or see what the default is - such functionality does not
exist in GLX. For more information on the standards implemented:
http://oss.sgi.com/projects/ogl-sample/registry/SGI/swap_control.txt
http://oss.sgi.com/projects/ogl-sample/registry/EXT/wgl_swap_control.txt

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