3 files changed, 48 insertions, 0 deletions
diff --git a/indra/llwindow/llwindow.h b/indra/llwindow/llwindow.h
index a05ba8cbba..f1113acd5f 100644
--- a/indra/llwindow/llwindow.h
+++ b/indra/llwindow/llwindow.h
@@ -168,6 +168,10 @@ public:
 
 	// Get system UI size based on DPI (for 96 DPI UI size should be 1.0)
 	virtual F32 getSystemUISize() { return 1.0; }
+
+    // windows only DirectInput8 for joysticks
+    virtual void* getDirectInput8() { return NULL; };
+    virtual bool getInputDevices(U32 device_type_filter, void * devices_callback, void* userdata) { return false; };
 protected:
 	LLWindow(LLWindowCallbacks* callbacks, BOOL fullscreen, U32 flags);
 	virtual ~LLWindow();
diff --git a/indra/llwindow/llwindowwin32.cpp b/indra/llwindow/llwindowwin32.cpp
index bef0ae76a8..e8abb9f31a 100644
--- a/indra/llwindow/llwindowwin32.cpp
+++ b/indra/llwindow/llwindowwin32.cpp
@@ -59,6 +59,9 @@
 
 #include <dinput.h>
 #include <Dbt.h.>
+#include <InitGuid.h> // needed for llurlentry test to build on some systems
+#pragma comment(lib, "dxguid.lib") // needed for llurlentry test to build on some systems
+#pragma comment(lib, "dinput8")
 
 const S32	MAX_MESSAGE_PER_UPDATE = 20;
 const S32	BITS_PER_PIXEL = 32;
@@ -76,6 +79,7 @@ const F32	ICON_FLASH_TIME = 0.5f;
 extern BOOL gDebugWindowProc;
 
 LPWSTR gIconResource = IDI_APPLICATION;
+LPDIRECTINPUT8 gDirectInput8;
 
 LLW32MsgCallback gAsyncMsgCallback = NULL;
 
@@ -482,6 +486,21 @@ LLWindowWin32::LLWindowWin32(LLWindowCallbacks* callbacks,
 	mhInstance = GetModuleHandle(NULL);
 	mWndProc = NULL;
 
+    // Init Direct Input - needed for joystick / Spacemouse
+
+    LPDIRECTINPUT8 di8_interface;
+    HRESULT status = DirectInput8Create(
+        mhInstance, // HINSTANCE hinst,
+        DIRECTINPUT_VERSION, // DWORD dwVersion,
+        IID_IDirectInput8, // REFIID riidltf,
+        (LPVOID*)&di8_interface, // LPVOID * ppvOut,
+        NULL                     // LPUNKNOWN punkOuter
+        );
+    if (status == DI_OK)
+    {
+        gDirectInput8 = di8_interface;
+    }
+
 	mSwapMethod = SWAP_METHOD_UNDEFINED;
 
 	// No WPARAM yet.
@@ -4185,6 +4204,28 @@ void LLWindowWin32::setDPIAwareness()
 	}
 }
 
+void* LLWindowWin32::getDirectInput8()
+{
+    return &gDirectInput8;
+}
+
+bool LLWindowWin32::getInputDevices(U32 device_type_filter, void * di8_devices_callback, void* userdata)
+{
+    if (gDirectInput8 != NULL)
+    {
+        // Enumerate devices
+        HRESULT status = gDirectInput8->EnumDevices(
+            (DWORD) device_type_filter,        // DWORD dwDevType,
+            (LPDIENUMDEVICESCALLBACK)di8_devices_callback,  // LPDIENUMDEVICESCALLBACK lpCallback, // BOOL DIEnumDevicesCallback( LPCDIDEVICEINSTANCE lpddi, LPVOID pvRef ) // BOOL CALLBACK DinputDevice::DevicesCallback
+            (LPVOID*)userdata, // LPVOID pvRef
+            DIEDFL_ATTACHEDONLY       // DWORD dwFlags
+            );
+
+        return status == DI_OK;
+    }
+    return false;
+}
+
 F32 LLWindowWin32::getSystemUISize()
 {
 	F32 scale_value = 1.f;
diff --git a/indra/llwindow/llwindowwin32.h b/indra/llwindow/llwindowwin32.h
index 9cd16eb993..ee0df570e9 100644
--- a/indra/llwindow/llwindowwin32.h
+++ b/indra/llwindow/llwindowwin32.h
@@ -116,6 +116,9 @@ public:
 
 	static std::vector<std::string> getDynamicFallbackFontList();
 	static void setDPIAwareness();
+
+    /*virtual*/ void* getDirectInput8();
+    /*virtual*/ bool getInputDevices(U32 device_type_filter, void * di8_devices_callback, void* userdata);
 protected:
 	LLWindowWin32(LLWindowCallbacks* callbacks,
 		const std::string& title, const std::string& name, int x, int y, int width, int height, U32 flags,