When an applicationn calls this method with the width or height
set to 0, we are allowed to pick any resolution, so we'll try to
find one close to the *current* display mode which usually returns
the current display mode itself.
Allows games to change the screen resolution in fullscreen
mode. This is currently in a rough shape and some games may
not work as expected when selecting fullscreen mode.
No `std::mbstowcs` string conversion needed than.
W/o this change I have different output when running `dxgi-factory.exe` compiled with MinGW:
* `Output 0:`
```
\\.\DISPLAY1 (default)
\\.\DISPLAY1 (DXVK MinGW)
\ (DXVK winebuild)
```
With this patch all three variants are identical (`\\.\DISPLAY1`)
p.s. same problem in dxgi_adapter.cpp, but `deviceProp.deviceName` is vulkan structure parameter (char deviceName[VK_MAX_PHYSICAL_DEVICE_NAME_SIZE]).
This is part of a major refactoring process regarding DXGI->Vulkan
format conversions. Since we don't patch format lookup tables any
longer, we can create a global lookup table.
* [dxgi] Fix compilation with WINE headers
```gcc
error: cannot convert 'MONITORINFOEX* {aka tagMONITORINFOEXA*}' to 'LPMONITORINFO {aka tagMONITORINFO*}' for argument '2' to 'BOOL GetMonitorInfoA(HMONITOR, LPMONITORINFO)'
```
```clang
cannot initialize a parameter of type 'LPMONITORINFO' (aka 'tagMONITORINFO *') with an rvalue of type '::MONITORINFOEX *' (aka 'tagMONITORINFOEXA *')
```
This can be WINE bug but I don't want to dig now, firs suggestion is wrong "tag":
wine variant
```c
typedef struct tagMONITORINFO
{
...
} MONITORINFO, *LPMONITORINFO;
typedef struct tagMONITORINFOEXA
{ /* the 4 first entries are the same as MONITORINFO */
...
} MONITORINFOEXA, *LPMONITORINFOEXA;
typedef struct tagMONITORINFOEXW
{ /* the 4 first entries are the same as MONITORINFO */
...
} MONITORINFOEXW, *LPMONITORINFOEXW;
DECL_WINELIB_TYPE_AW(MONITORINFOEX)
DECL_WINELIB_TYPE_AW(LPMONITORINFOEX)
```
VS
MinGW variant
```c
typedef struct tagMONITORINFO {
...
} MONITORINFO,*LPMONITORINFO;
typedef struct tagMONITORINFOEXA : public tagMONITORINFO {
CHAR szDevice[CCHDEVICENAME];
} MONITORINFOEXA,*LPMONITORINFOEXA;
typedef struct tagMONITORINFOEXW : public tagMONITORINFO {
WCHAR szDevice[CCHDEVICENAME];
} MONITORINFOEXW,*LPMONITORINFOEXW;
__MINGW_TYPEDEF_AW(MONITORINFOEX)
__MINGW_TYPEDEF_AW(LPMONITORINFOEX)
```
* [dxgi] Fix compilation with WINE headers
Use C++-style casts rather than C ones.
`limits.h` required for `UINT_MAX` and not always used, so better to use standard C++ variant from `<limits>`.
Some compilers may simply return `UINT_MAX` value, gcc version: `max() _GLIBCXX_USE_NOEXCEPT { return __INT_MAX__ * 2U + 1; }`.
* [dxgi] Replace MSVC _countof macro with std::size
pro: crosscompiler
con: may not work for older clang/gcc/...
http://en.cppreference.com/w/cpp/iterator/size
For example `Run this code` mode produces errors for GCC-5.2(C++17) and clang-3.8(C++17). Local GCC-7.3 and clang-7 versions are ok.
Not tested w/ MinGW64.
* [dxgi] Replace MSVC _countof macro with std::size
This solves issues in applications that create more than one
swap chain for a given window, and helps applications that
don't like SDL interference in general. Fullscreen support
is currently missing entirely.
