add workaround to jabo for some old intel gpus (seemingly only involving d3d8) which wreck the SetDllDirectory for the process. A similar workaround may be needed for d39 display method, but that isn't clear yet.

libmupen64plus/D3D8Interceptor/Direct3D8Functions.cpp

@@ -121,10 +121,21 @@ extern "C"
 		
 		STDMETHODIMP D3D8Wrapper::IDirect3D8::CreateDevice(UINT Adapter,D3D8Base::D3DDEVTYPE DeviceType,HWND hFocusWindow,DWORD BehaviorFlags,D3D8Base::D3DPRESENT_PARAMETERS* pPresentationParameters,D3D8Wrapper::IDirect3DDevice8** ppReturnedDeviceInterface)
 		{
+			//sometimes, Intel drivers will clear the dll path. So let's save and restore it (do their job for them)
+			//it doesn't seem like this happens any time besides creating the D3D8 object and a device.
+			//If it does, then this solution isn't scalable at all.
+			//This is a good place to note that it appears possible that on the affected drivers, the D3D9 interface will only SetDllDirectory the first time a D3D9 object is created
+			char oldDllDirectory[MAX_PATH];
+			GetDllDirectory(MAX_PATH, oldDllDirectory);
+
 			LOG("IDirect3D8::CreateDevice( " << Adapter << " , " << DeviceType << " , " << hFocusWindow << " , " << BehaviorFlags << " , " << pPresentationParameters << " , " << ppReturnedDeviceInterface << " ) [ " << this << " ]\n");
 			D3D8Base::IDirect3DDevice8* realDevice = NULL;
 
 			HRESULT hr = m_pD3D->CreateDevice(Adapter,DeviceType,hFocusWindow,BehaviorFlags,pPresentationParameters,&realDevice);
+
+			//restore old DLL directory
+			SetDllDirectory(oldDllDirectory);
+
 			if(FAILED(hr))
 			{
 				return hr;

libmupen64plus/D3D8Interceptor/d3d8Wrapper.cpp

@@ -14,7 +14,11 @@ extern "C"
 
 		D3D8Wrapper::IDirect3D8* WINAPI Direct3DCreate8(UINT Version)
 		{
-			// Get the real DLL path from the system directory
+			//sometimes, Intel drivers will clear the dll path. So let's save and restore it (do their job for them)
+			char oldDllDirectory[MAX_PATH];
+			GetDllDirectory(MAX_PATH, oldDllDirectory);
+
+			// Get the real DLL path from the system directory, needs to be specific to avoid binding to the d3d8.dll we're in now!
 			// Might be unsafe
 			CHAR dll_path[1024];
 			GetSystemDirectory(dll_path,1024);
@@ -30,6 +34,9 @@ extern "C"
 			// Wrap the object
 			D3D8Wrapper::IDirect3D8* wrappedD3D = D3D8Wrapper::IDirect3D8::GetDirect3D(realD3D);
 
+			//restore old DLL directory
+			SetDllDirectory(oldDllDirectory);
+
 			return wrappedD3D;
 		}
 	}