Hide the D3D11 backend if Windows version is older than Win8

CMakeLists.txt

@@ -347,6 +347,8 @@ add_library(Common STATIC
 	Common/Misc.cpp
 	Common/MsgHandler.cpp
 	Common/MsgHandler.h
+	Common/OSVersion.cpp
+	Common/OSVersion.h
 	Common/StringUtils.cpp
 	Common/StringUtils.h
 	Common/ThreadPools.cpp

Common/Common.vcxproj

@@ -233,6 +233,7 @@
     <ClInclude Include="MemoryUtil.h" />
     <ClInclude Include="MipsEmitter.h" />
     <ClInclude Include="MsgHandler.h" />
+    <ClInclude Include="OSVersion.h" />
     <ClInclude Include="stdafx.h" />
     <ClInclude Include="StringUtils.h" />
     <ClInclude Include="Swap.h" />
@@ -300,6 +301,7 @@
     <ClCompile Include="MipsEmitter.cpp" />
     <ClCompile Include="Misc.cpp" />
     <ClCompile Include="MsgHandler.cpp" />
+    <ClCompile Include="OSVersion.cpp" />
     <ClCompile Include="stdafx.cpp">
       <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Create</PrecompiledHeader>
       <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Create</PrecompiledHeader>
@@ -326,4 +328,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
+</Project>

Common/Common.vcxproj.filters

@@ -73,6 +73,7 @@
     <ClInclude Include="Vulkan\VulkanMemory.h">
       <Filter>Vulkan</Filter>
     </ClInclude>
+    <ClInclude Include="OSVersion.h" />
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="stdafx.cpp" />
@@ -135,6 +136,7 @@
     <ClCompile Include="MemArenaWin32.cpp" />
     <ClCompile Include="MemArenaAndroid.cpp" />
     <ClCompile Include="MemArenaDarwin.cpp" />
+    <ClCompile Include="OSVersion.cpp" />
   </ItemGroup>
   <ItemGroup>
     <Filter Include="Crypto">
@@ -150,4 +152,4 @@
       <UniqueIdentifier>{c14d66ef-5f7c-4565-975a-72774e7ccfb9}</UniqueIdentifier>
     </Filter>
   </ItemGroup>
-</Project>
+</Project>

Common/OSVersion.cpp

@@ -0,0 +1,87 @@
+
+#ifdef _MSC_VER
+
+#include <cstdint>
+#include "OSVersion.h"
+#include "Common/CommonWindows.h"
+
+bool DoesVersionMatchWindows(uint32_t major, uint32_t minor, uint32_t spMajor, uint32_t spMinor) {
+	uint64_t conditionMask = 0;
+	OSVERSIONINFOEX osvi;
+	ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
+
+	osvi.dwOSVersionInfoSize = sizeof(osvi);
+	osvi.dwMajorVersion = major;
+	osvi.dwMinorVersion = minor;
+	osvi.wServicePackMajor = spMajor;
+	osvi.wServicePackMinor = spMinor;
+	uint32_t op = VER_EQUAL;
+
+	VER_SET_CONDITION(conditionMask, VER_MAJORVERSION, op);
+	VER_SET_CONDITION(conditionMask, VER_MINORVERSION, op);
+	VER_SET_CONDITION(conditionMask, VER_SERVICEPACKMAJOR, op);
+	VER_SET_CONDITION(conditionMask, VER_SERVICEPACKMINOR, op);
+
+	const uint32_t typeMask = VER_MAJORVERSION | VER_MINORVERSION | VER_SERVICEPACKMAJOR | VER_SERVICEPACKMINOR;
+
+	return VerifyVersionInfo(&osvi, typeMask, conditionMask) != FALSE;
+}
+
+std::string GetWindowsVersion() {
+	const bool IsWindowsXPSP2 = DoesVersionMatchWindows(5, 1, 2, 0);
+	const bool IsWindowsXPSP3 = DoesVersionMatchWindows(5, 1, 3, 0);
+	const bool IsWindowsVista = DoesVersionMatchWindows(6, 0);
+	const bool IsWindowsVistaSP1 = DoesVersionMatchWindows(6, 0, 1, 0);
+	const bool IsWindowsVistaSP2 = DoesVersionMatchWindows(6, 0, 2, 0);
+	const bool IsWindows7 = DoesVersionMatchWindows(6, 1);
+	const bool IsWindows7SP1 = DoesVersionMatchWindows(6, 1, 1, 0);
+	const bool IsWindows8 = DoesVersionMatchWindows(6, 2);
+	const bool IsWindows8_1 = DoesVersionMatchWindows(6, 3);
+
+	if (IsWindowsXPSP2)
+		return "Microsoft Windows XP, Service Pack 2";
+
+	if (IsWindowsXPSP3)
+		return "Microsoft Windows XP, Service Pack 3";
+
+	if (IsWindowsVista)
+		return "Microsoft Windows Vista";
+
+	if (IsWindowsVistaSP1)
+		return "Microsoft Windows Vista, Service Pack 1";
+
+	if (IsWindowsVistaSP2)
+		return "Microsoft Windows Vista, Service Pack 2";
+
+	if (IsWindows7)
+		return "Microsoft Windows 7";
+
+	if (IsWindows7SP1)
+		return "Microsoft Windows 7, Service Pack 1";
+
+	if (IsWindows8)
+		return "Microsoft Windows 8 or greater"; // "Applications not manifested for Windows 10 will return the Windows 8 OS version value (6.2)."
+
+	if (IsWindows8_1)
+		return "Microsoft Windows 8.1";
+
+	return "Unsupported version of Microsoft Windows.";
+}
+
+std::string GetWindowsSystemArchitecture() {
+	SYSTEM_INFO sysinfo;
+	ZeroMemory(&sysinfo, sizeof(SYSTEM_INFO));
+	GetNativeSystemInfo(&sysinfo);
+
+	if (sysinfo.wProcessorArchitecture & PROCESSOR_ARCHITECTURE_AMD64)
+		return "(x64)";
+	// Need to check for equality here, since ANDing with 0 is always 0.
+	else if (sysinfo.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_INTEL)
+		return "(x86)";
+	else if (sysinfo.wProcessorArchitecture & PROCESSOR_ARCHITECTURE_ARM)
+		return "(ARM)";
+	else
+		return "(Unknown)";
+}
+
+#endif

Common/OSVersion.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#include <string>
+
+#ifdef _MSC_VER
+
+bool DoesVersionMatchWindows(uint32_t major, uint32_t minor, uint32_t spMajor = 0, uint32_t spMinor = 0);
+std::string GetWindowsVersion();
+std::string GetWindowsSystemArchitecture();
+
+#endif

UI/GameSettingsScreen.cpp

@@ -44,6 +44,7 @@
 
 #include "Common/KeyMap.h"
 #include "Common/FileUtil.h"
+#include "Common/OSVersion.h"
 #include "Core/Config.h"
 #include "Core/Host.h"
 #include "Core/System.h"
@@ -159,6 +160,13 @@ void GameSettingsScreen::CreateViews() {
 #if !defined(_WIN32)
 	renderingBackendChoice->HideChoice(1);  // D3D9
 	renderingBackendChoice->HideChoice(2);  // D3D11
+#else
+	if (!DoesVersionMatchWindows(6, 2)) {
+		// Hide the D3D11 choice if Windows version is older than Windows 8.
+		// We will later be able to support Windows 7 and Vista (unofficially) as well,
+		// but we currently depend on a texture format that's only available in Win8+.
+		renderingBackendChoice->HideChoice(2);  // D3D11
+	}
 #endif
 #if !defined(_WIN32)
 	// TODO: Add dynamic runtime check for Vulkan support on Android

Windows/main.cpp

@@ -19,6 +19,8 @@
 #include <cmath>
 
 #include "Common/CommonWindows.h"
+#include "Common/OSVersion.h"
+
 #include <Wbemidl.h>
 #include <shellapi.h>
 #include <mmsystem.h>
@@ -85,86 +87,6 @@ void Vibrate(int length_ms) {
 	// Ignore on PC
 }
 
-bool DoesVersionMatchWindows(const u32 major, const u32 minor, const u32 spMajor = 0, const u32 spMinor = 0) {
-	u64 conditionMask = 0;
-	OSVERSIONINFOEX osvi;
-	ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
-
-	osvi.dwOSVersionInfoSize = sizeof(osvi);
-	osvi.dwMajorVersion = major;
-	osvi.dwMinorVersion = minor;
-	osvi.wServicePackMajor = spMajor;
-	osvi.wServicePackMinor = spMinor;
-	u32 op = VER_EQUAL;
-
-	VER_SET_CONDITION(conditionMask, VER_MAJORVERSION, op);
-	VER_SET_CONDITION(conditionMask, VER_MINORVERSION, op);
-	VER_SET_CONDITION(conditionMask, VER_SERVICEPACKMAJOR, op);
-	VER_SET_CONDITION(conditionMask, VER_SERVICEPACKMINOR, op);
-
-	const u32 typeMask = VER_MAJORVERSION | VER_MINORVERSION | VER_SERVICEPACKMAJOR | VER_SERVICEPACKMINOR;
-
-	return VerifyVersionInfo(&osvi, typeMask, conditionMask) != FALSE;
-}
-
-std::string GetWindowsVersion() {
-	const bool IsWindowsXPSP2 = DoesVersionMatchWindows(5, 1, 2, 0);
-	const bool IsWindowsXPSP3 = DoesVersionMatchWindows(5, 1, 3, 0);
-	const bool IsWindowsVista = DoesVersionMatchWindows(6, 0);
-	const bool IsWindowsVistaSP1 = DoesVersionMatchWindows(6, 0, 1, 0);
-	const bool IsWindowsVistaSP2 = DoesVersionMatchWindows(6, 0, 2, 0);
-	const bool IsWindows7 = DoesVersionMatchWindows(6, 1);
-	const bool IsWindows7SP1 = DoesVersionMatchWindows(6, 1, 1, 0);
-	const bool IsWindows8 = DoesVersionMatchWindows(6, 2);
-	const bool IsWindows8_1 = DoesVersionMatchWindows(6, 3);
-
-
-	if (IsWindowsXPSP2)
-		return "Microsoft Windows XP, Service Pack 2";
-
-	if (IsWindowsXPSP3)
-		return "Microsoft Windows XP, Service Pack 3";
-
-	if (IsWindowsVista)
-		return "Microsoft Windows Vista";
-
-	if (IsWindowsVistaSP1)
-		return "Microsoft Windows Vista, Service Pack 1";
-
-	if (IsWindowsVistaSP2)
-		return "Microsoft Windows Vista, Service Pack 2";
-
-	if (IsWindows7)
-		return "Microsoft Windows 7";
-
-	if (IsWindows7SP1)
-		return "Microsoft Windows 7, Service Pack 1";
-
-	if (IsWindows8)
-		return "Microsoft Windows 8 or greater"; // "Applications not manifested for Windows 10 will return the Windows 8 OS version value (6.2)."
-												
-	if (IsWindows8_1)
-		return "Microsoft Windows 8.1";
-
-	return "Unsupported version of Microsoft Windows.";
-}
-
-std::string GetWindowsSystemArchitecture() {
-	SYSTEM_INFO sysinfo;
-	ZeroMemory(&sysinfo, sizeof(SYSTEM_INFO));
-	GetNativeSystemInfo(&sysinfo);
-
-	if (sysinfo.wProcessorArchitecture & PROCESSOR_ARCHITECTURE_AMD64)
-		return "(x64)";
-	// Need to check for equality here, since ANDing with 0 is always 0.
-	else if (sysinfo.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_INTEL)
-		return "(x86)";
-	else if (sysinfo.wProcessorArchitecture & PROCESSOR_ARCHITECTURE_ARM)
-		return "(ARM)";
-	else
-		return "(Unknown)";
-}
-
 // Adapted mostly as-is from http://www.gamedev.net/topic/495075-how-to-retrieve-info-about-videocard/?view=findpost&p=4229170
 // so credit goes to that post's author, and in turn, the author of the site mentioned in that post (which seems to be down?).
 std::string GetVideoCardDriverVersion() {