From 205637ccc31c82e48363a46c635e04f7a8d77e8e Mon Sep 17 00:00:00 2001
From: "j4ck.fr0st" <j4ck.fr0st@gmail.com>
Date: Sat, 19 Mar 2011 12:58:55 +0000
Subject: [PATCH] Hide DX11 on WinXP (fixes Issue 3719)

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@7379 8ced0084-cf51-0410-be5f-012b33b47a6e
---
 Source/Core/Common/Src/VideoBackendBase.cpp | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/Source/Core/Common/Src/VideoBackendBase.cpp b/Source/Core/Common/Src/VideoBackendBase.cpp
index 5126ccca07..1fbe0f4a41 100644
--- a/Source/Core/Common/Src/VideoBackendBase.cpp
+++ b/Source/Core/Common/Src/VideoBackendBase.cpp
@@ -28,12 +28,29 @@
 std::vector<VideoBackend*> g_available_video_backends;
 VideoBackend* g_video_backend = NULL;
 
+#ifdef _WIN32
+// http://msdn.microsoft.com/en-us/library/ms725491.aspx
+static bool IsGteVista() 
+{
+	OSVERSIONINFOEX osvi;
+	DWORDLONG dwlConditionMask = 0;
+
+	ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
+	osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
+	osvi.dwMajorVersion = 6;
+
+	VER_SET_CONDITION(dwlConditionMask, VER_MAJORVERSION, VER_GREATER_EQUAL);
+
+	return VerifyVersionInfo(&osvi, VER_MAJORVERSION, dwlConditionMask);
+}
+#endif
+
 void VideoBackend::PopulateList()
 {
 #ifdef _WIN32
 	g_available_video_backends.push_back(new DX9::VideoBackend);
-	// TODO: if (winver >= VISTA) :p
-	g_available_video_backends.push_back(new DX11::VideoBackend);
+	if (IsGteVista())
+		g_available_video_backends.push_back(new DX11::VideoBackend);
 #endif
 	g_available_video_backends.push_back(new OGL::VideoBackend);
 	g_available_video_backends.push_back(new SW::VideoSoftware);