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authorMichael Lutz <michi@icosahedron.de>2021-01-16 16:43:04 +0100
committerMichael Lutz <michi@icosahedron.de>2021-02-22 22:16:07 +0100
commitef478ade649add1ab1706370ff53bcb0c32798d1 (patch)
treebf39b20030319377edec1b654fe4e8c7ba4594a3 /src/os/windows
parentaf4d32357cc4cea6878c61c366378477e62915d0 (diff)
downloadopenttd-ef478ade649add1ab1706370ff53bcb0c32798d1.tar.xz
Add: [Win32] Video driver that uses OpenGL to transfer the video buffer to the screen.
Diffstat (limited to 'src/os/windows')
-rw-r--r--src/os/windows/win32.cpp32
-rw-r--r--src/os/windows/win32.h1
2 files changed, 33 insertions, 0 deletions
diff --git a/src/os/windows/win32.cpp b/src/os/windows/win32.cpp
index 650413d02..ffc4f8c1a 100644
--- a/src/os/windows/win32.cpp
+++ b/src/os/windows/win32.cpp
@@ -820,6 +820,38 @@ int OTTDStringCompare(const char *s1, const char *s2)
return CompareString(MAKELCID(_current_language->winlangid, SORT_DEFAULT), NORM_IGNORECASE, s1_buf, -1, s2_buf, -1);
}
+/**
+ * Is the current Windows version Vista or later?
+ * @return True if the current Windows is Vista or later.
+ */
+bool IsWindowsVistaOrGreater()
+{
+ typedef BOOL (WINAPI * LPVERIFYVERSIONINFO)(LPOSVERSIONINFOEX, DWORD, DWORDLONG);
+ typedef ULONGLONG (NTAPI * LPVERSETCONDITIONMASK)(ULONGLONG, DWORD, BYTE);
+#ifdef UNICODE
+ static LPVERIFYVERSIONINFO _VerifyVersionInfo = (LPVERIFYVERSIONINFO)GetProcAddress(GetModuleHandle(_T("Kernel32")), "VerifyVersionInfoW");
+#else
+ static LPVERIFYVERSIONINFO _VerifyVersionInfo = (LPVERIFYVERSIONINFO)GetProcAddress(GetModuleHandle(_T("Kernel32")), "VerifyVersionInfoA");
+#endif
+ static LPVERSETCONDITIONMASK _VerSetConditionMask = (LPVERSETCONDITIONMASK)GetProcAddress(GetModuleHandle(_T("Kernel32")), "VerSetConditionMask");
+
+ if (_VerifyVersionInfo != nullptr && _VerSetConditionMask != nullptr) {
+ OSVERSIONINFOEX osvi = { sizeof(osvi), 0, 0, 0, 0, {0}, 0, 0 };
+ DWORDLONG dwlConditionMask = 0;
+ dwlConditionMask = _VerSetConditionMask(dwlConditionMask, VER_MAJORVERSION, VER_GREATER_EQUAL);
+ dwlConditionMask = _VerSetConditionMask(dwlConditionMask, VER_MINORVERSION, VER_GREATER_EQUAL);
+ dwlConditionMask = _VerSetConditionMask(dwlConditionMask, VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL);
+
+ osvi.dwMajorVersion = 6;
+ osvi.dwMinorVersion = 0;
+ osvi.wServicePackMajor = 0;
+
+ return _VerifyVersionInfo(&osvi, VER_MAJORVERSION | VER_MINORVERSION | VER_SERVICEPACKMAJOR, dwlConditionMask) != FALSE;
+ } else {
+ return LOBYTE(GetVersion()) >= 6;
+ }
+}
+
#ifdef _MSC_VER
/* Based on code from MSDN: https://msdn.microsoft.com/en-us/library/xcb2z8hs.aspx */
const DWORD MS_VC_EXCEPTION = 0x406D1388;
diff --git a/src/os/windows/win32.h b/src/os/windows/win32.h
index 8ffe8ae7b..8cc85865f 100644
--- a/src/os/windows/win32.h
+++ b/src/os/windows/win32.h
@@ -39,5 +39,6 @@ HRESULT OTTDSHGetFolderPath(HWND, int, HANDLE, DWORD, LPTSTR);
void Win32SetCurrentLocaleName(const char *iso_code);
int OTTDStringCompare(const char *s1, const char *s2);
+bool IsWindowsVistaOrGreater();
#endif /* WIN32_H */