Allow setting D3DCREATE_MULTITHREADED when creating Direct3D drivers.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@4167 dfc29bdd-3216-0410-991c-e03cc46cb475

include/SIrrCreationParameters.h

@@ -43,6 +43,7 @@ namespace irr
 			LoggingLevel(ELL_INFORMATION),
 #endif
 			DisplayAdapter(0),
+			DriverMultithreaded(false),
 			UsePerformanceTimer(true),
 			SDK_version_do_not_use(IRRLICHT_SDK_VERSION)
 		{
@@ -72,6 +73,7 @@ namespace irr
 			EventReceiver = other.EventReceiver;
 			WindowId = other.WindowId;
 			LoggingLevel = other.LoggingLevel;
+			DriverMultithreaded = other.DriverMultithreaded;
 			DisplayAdapter = other.DisplayAdapter;
 			UsePerformanceTimer = other.UsePerformanceTimer;
 			return *this;
@@ -268,6 +270,12 @@ namespace irr
 		/** So far only supported on D3D */
 		u32 DisplayAdapter;
 
+		//! Create the driver multithreaded.
+		/** Default is false. Enabling this can slow down your application.
+			Note that this does _not_ make Irrlicht threadsafe, but only the underlying driver-API for the graphiccard.
+			So far only supported on D3D. */
+		bool DriverMultithreaded;
+
 		//! Enables use of high performance timers on Windows platform.
 		/** When performance timers are not used, standard GetTickCount()
 		is used instead which usually has worse resolution, but also less

source/Irrlicht/CD3D8Driver.cpp

@@ -326,11 +326,12 @@ bool CD3D8Driver::initDriver(const core::dimension2d<u32>& screenSize,
 	DWORD fpuPrecision = 0;
 #else
 	DWORD fpuPrecision = highPrecisionFPU ? D3DCREATE_FPU_PRESERVE : 0;
+	DWORD multithreaded = Params.DriverMultithreaded ? D3DCREATE_MULTITHREADED : 0;
 #endif
 	if (pureSoftware)
 	{
 		hr = pID3D->CreateDevice(DisplayAdapter, D3DDEVTYPE_REF, hwnd,
-				fpuPrecision | D3DCREATE_SOFTWARE_VERTEXPROCESSING, &present, &pID3DDevice);
+				fpuPrecision | multithreaded | D3DCREATE_SOFTWARE_VERTEXPROCESSING, &present, &pID3DDevice);
 
 		if (FAILED(hr))
 			os::Printer::log("Was not able to create Direct3D8 software device.", ELL_ERROR);
@@ -338,14 +339,14 @@ bool CD3D8Driver::initDriver(const core::dimension2d<u32>& screenSize,
 	else
 	{
 		hr = pID3D->CreateDevice(DisplayAdapter, devtype, hwnd,
-				fpuPrecision | D3DCREATE_HARDWARE_VERTEXPROCESSING, &present, &pID3DDevice);
+				fpuPrecision | multithreaded | D3DCREATE_HARDWARE_VERTEXPROCESSING, &present, &pID3DDevice);
 
 		if(FAILED(hr))
 			hr = pID3D->CreateDevice(DisplayAdapter, devtype, hwnd,
-					fpuPrecision | D3DCREATE_MIXED_VERTEXPROCESSING , &present, &pID3DDevice);
+					fpuPrecision | multithreaded | D3DCREATE_MIXED_VERTEXPROCESSING , &present, &pID3DDevice);
 		if(FAILED(hr))
 			hr = pID3D->CreateDevice(DisplayAdapter, devtype, hwnd,
-					fpuPrecision | D3DCREATE_SOFTWARE_VERTEXPROCESSING, &present, &pID3DDevice);
+					fpuPrecision | multithreaded | D3DCREATE_SOFTWARE_VERTEXPROCESSING, &present, &pID3DDevice);
 		if (FAILED(hr))
 			os::Printer::log("Was not able to create Direct3D8 device.", ELL_ERROR);
 	}

source/Irrlicht/CD3D9Driver.cpp

@@ -375,6 +375,7 @@ bool CD3D9Driver::initDriver(HWND hwnd, bool pureSoftware)
 	// create device
 
 	DWORD fpuPrecision = Params.HighPrecisionFPU ? D3DCREATE_FPU_PRESERVE : 0;
+	DWORD multithreaded = Params.DriverMultithreaded ? D3DCREATE_MULTITHREADED : 0;
 	if (pureSoftware)
 	{
 		if (FAILED(pID3D->CreateDevice(Params.DisplayAdapter, D3DDEVTYPE_REF, hwnd,
@@ -384,15 +385,15 @@ bool CD3D9Driver::initDriver(HWND hwnd, bool pureSoftware)
 	else
 	{
 		HRESULT hr = pID3D->CreateDevice(adapter, devtype, hwnd,
-				fpuPrecision | D3DCREATE_HARDWARE_VERTEXPROCESSING, &present, &pID3DDevice);
+				fpuPrecision | multithreaded | D3DCREATE_HARDWARE_VERTEXPROCESSING, &present, &pID3DDevice);
 
 		if(FAILED(hr))
 			hr = pID3D->CreateDevice(adapter, devtype, hwnd,
-					fpuPrecision | D3DCREATE_MIXED_VERTEXPROCESSING , &present, &pID3DDevice);
+					fpuPrecision | multithreaded | D3DCREATE_MIXED_VERTEXPROCESSING , &present, &pID3DDevice);
 
 		if(FAILED(hr))
 			hr = pID3D->CreateDevice(adapter, devtype, hwnd,
-					fpuPrecision | D3DCREATE_SOFTWARE_VERTEXPROCESSING, &present, &pID3DDevice);
+					fpuPrecision | multithreaded | D3DCREATE_SOFTWARE_VERTEXPROCESSING, &present, &pID3DDevice);
 
 		if (FAILED(hr))
 			os::Printer::log("Was not able to create Direct3D9 device.", ELL_ERROR);