Changed createOpenGLDriver to use SIrrlichtCreationParameters.

Added Fullscreen AntiAliasing for Win32/OpenGL. Screenshot not working in this mode ATM.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@1713 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/CIrrDeviceWin32.cpp

@@ -35,9 +35,7 @@ namespace irr
 		#endif
 
 		#ifdef _IRR_COMPILE_WITH_OPENGL_
-		IVideoDriver* createOpenGLDriver(const core::dimension2d<s32>& screenSize, HWND window,
-			u32 bits, bool stencilBuffer, io::IFileSystem* io,
-			bool vsync, bool antiAlias);
+		IVideoDriver* createOpenGLDriver(const irr::SIrrlichtCreationParameters& params, io::IFileSystem* io);
 		#endif
 	}
 } // end namespace irr
@@ -293,7 +291,6 @@ CIrrDeviceWin32::CIrrDeviceWin32(const SIrrlichtCreationParameters& params)
 	IsNonNTWindows(false), Resized(false),
 	ExternalWindow(false), Win32CursorControl(0)
 {
-
 	#ifdef _DEBUG
 	setDebugName("CIrrDeviceWin32");
 	#endif
@@ -363,6 +360,7 @@ CIrrDeviceWin32::CIrrDeviceWin32(const SIrrlichtCreationParameters& params)
 
 		HWnd = CreateWindow( ClassName, "", style, windowLeft, windowTop,
 					realWidth, realHeight, NULL, NULL, hInstance, NULL);
+		CreationParams.WindowId = HWnd;
 
 		ShowWindow(HWnd, SW_SHOW);
 		UpdateWindow(HWnd);
@@ -370,10 +368,9 @@ CIrrDeviceWin32::CIrrDeviceWin32(const SIrrlichtCreationParameters& params)
 		// fix ugly ATI driver bugs. Thanks to ariaci
 		MoveWindow(HWnd, windowLeft, windowTop, realWidth, realHeight, TRUE);
 	}
-
-	// attach external window
-	if (CreationParams.WindowId)
+	else if (CreationParams.WindowId)
 	{
+		// attach external window
 		HWnd = static_cast<HWND>(CreationParams.WindowId);
 		RECT r;
 		GetWindowRect(HWnd, &r);
@@ -478,9 +475,7 @@ void CIrrDeviceWin32::createDriver()
 		if (CreationParams.Fullscreen)
 			switchToFullScreen(CreationParams.WindowSize.Width, CreationParams.WindowSize.Height, CreationParams.Bits);
 
-		VideoDriver = video::createOpenGLDriver(CreationParams.WindowSize, HWnd, CreationParams.Bits, 
-			CreationParams.Stencilbuffer, FileSystem,
-			CreationParams.Vsync, CreationParams.AntiAlias);
+		VideoDriver = video::createOpenGLDriver(CreationParams, FileSystem);
 		if (!VideoDriver)
 		{
 			os::Printer::log("Could not create OpenGL driver.", ELL_ERROR);

source/Irrlicht/CIrrDeviceWinCE.cpp

@@ -40,9 +40,7 @@ namespace irr
 		#endif
 
 		#ifdef _IRR_COMPILE_WITH_OPENGL_
-		IVideoDriver* createOpenGLDriver(const core::dimension2d<s32>& screenSize, HWND window,
-			u32 bits, bool fullscreen, bool stencilBuffer, io::IFileSystem* io,
-			bool vsync, bool antiAlias);
+		IVideoDriver* createOpenGLDriver(const irr::SIrrlichtCreationParameters& params, io::IFileSystem* io);
 		#endif
 	}
 } // end namespace irr
@@ -276,7 +274,7 @@ namespace irr
 
 //! constructor
 CIrrDeviceWinCE::CIrrDeviceWinCE(const SIrrlichtCreationParameters& params)
-: CIrrDeviceStub(params), HWnd(reinterpret_cast<HWND>(CreationParams.WindowId)),
+: CIrrDeviceStub(params), HWnd(0),
 	Win32CursorControl(0), ChangedToFullScreen(false), Resized(false),
 	ExternalWindow(false)
 {
@@ -292,7 +290,7 @@ CIrrDeviceWinCE::CIrrDeviceWinCE(const SIrrlichtCreationParameters& params)
 	HINSTANCE hInstance = GetModuleHandle(0);
 
 	// create the window only if we do not use the null device
-	if (!HWnd && (CreationParams.DriverType != video::EDT_NULL))
+	if (!CreationParams.WindowId && (CreationParams.DriverType != video::EDT_NULL))
 	{
 		const wchar_t* ClassName = L"CIrrDeviceWinCE";
 
@@ -346,10 +344,10 @@ CIrrDeviceWinCE::CIrrDeviceWinCE(const SIrrlichtCreationParameters& params)
 		// fix ugly ATI driver bugs. Thanks to ariaci
 		MoveWindow(HWnd, windowLeft, windowTop, realWidth, realHeight, TRUE);
 	}
-
-	// attach external window
-	if (CreationParams.WindowId)
+	else if (CreationParams.WindowId)
 	{
+		// attach external window
+		HWnd = static_cast<HWND>(CreationParams.WindowId);
 		RECT r;
 		GetWindowRect(HWnd, &r);
 		CreationParams.WindowSize.Width = r.right - r.left;
@@ -383,7 +381,6 @@ CIrrDeviceWinCE::CIrrDeviceWinCE(const SIrrlichtCreationParameters& params)
 }
 
 
-
 //! destructor
 CIrrDeviceWinCE::~CIrrDeviceWinCE()
 {
@@ -399,12 +396,9 @@ CIrrDeviceWinCE::~CIrrDeviceWinCE()
 			EnvMap.erase(it);
 			break;
 		}
-
-
 }
 
 
-
 //! create the driver
 void CIrrDeviceWinCE::createDriver()
 {
@@ -443,8 +437,7 @@ void CIrrDeviceWinCE::createDriver()
 		#ifdef _IRR_COMPILE_WITH_OPENGL_
 		if (CreationParams.Fullscreen)
 			switchToFullScreen();
-		VideoDriver = video::createOpenGLDriver(CreationParams.WindowSize, HWnd, CreationParams.Bits, CreationParams.Fullscreen, CreationParams.Stencilbuffer, FileSystem,
-			CreationParams.Vsync, CreationParams.AntiAlias);
+		VideoDriver = video::createOpenGLDriver(CreationParams, FileSystem);
 		if (!VideoDriver)
 		{
 			os::Printer::log("Could not create OpenGL driver.", ELL_ERROR);

source/Irrlicht/COpenGLDriver.cpp

@@ -31,14 +31,13 @@ namespace video
 // -----------------------------------------------------------------------
 #ifdef _IRR_USE_WINDOWS_DEVICE_
 //! Windows constructor and init code
-COpenGLDriver::COpenGLDriver(const core::dimension2d<s32>& screenSize,
-		HWND window, bool stencilBuffer,
-		io::IFileSystem* io, bool antiAlias)
-: CNullDriver(io, screenSize), COpenGLExtensionHandler(),
+COpenGLDriver::COpenGLDriver(const irr::SIrrlichtCreationParameters& params,
+		io::IFileSystem* io)
+: CNullDriver(io, params.WindowSize), COpenGLExtensionHandler(),
 	CurrentRenderMode(ERM_NONE), ResetRenderStates(true), Transformation3DChanged(true),
-	AntiAlias(antiAlias), RenderTargetTexture(0), LastSetLight(-1),
+	AntiAlias(params.AntiAlias), RenderTargetTexture(0), LastSetLight(-1),
 	CurrentRendertargetSize(0,0),
-	HDc(0), Window(window), HRc(0)
+	HDc(0), Window(static_cast<HWND>(params.WindowId)), HRc(0)
 {
 	#ifdef _DEBUG
 	setDebugName("COpenGLDriver");
@@ -46,8 +45,7 @@ COpenGLDriver::COpenGLDriver(const core::dimension2d<s32>& screenSize,
 }
 
 //! inits the open gl driver
-bool COpenGLDriver::initDriver(const core::dimension2d<s32>& screenSize,
-				HWND window, u32 bits, bool vsync, bool stencilBuffer)
+bool COpenGLDriver::initDriver(irr::SIrrlichtCreationParameters params)
 {
 	// Set up ixel format descriptor with desired parameters
 	PIXELFORMATDESCRIPTOR pfd = {
@@ -57,14 +55,14 @@ bool COpenGLDriver::initDriver(const core::dimension2d<s32>& screenSize,
 		PFD_SUPPORT_OPENGL |		// Format Must Support OpenGL
 		PFD_DOUBLEBUFFER,		// Must Support Double Buffering
 		PFD_TYPE_RGBA,			// Request An RGBA Format
-		bits,				// Select Our Color Depth
+		params.Bits,				// Select Our Color Depth
 		0, 0, 0, 0, 0, 0,		// Color Bits Ignored
 		0,				// No Alpha Buffer
 		0,				// Shift Bit Ignored
 		0,				// No Accumulation Buffer
 		0, 0, 0, 0,			// Accumulation Bits Ignored
 		24,				// Z-Buffer (Depth Buffer)
-		stencilBuffer ? 1 : 0,		// Stencil Buffer Depth
+		params.Stencilbuffer ? 1 : 0,	// Stencil Buffer Depth
 		0,				// No Auxiliary Buffer
 		PFD_MAIN_PLANE,			// Main Drawing Layer
 		0,				// Reserved
@@ -73,21 +71,185 @@ bool COpenGLDriver::initDriver(const core::dimension2d<s32>& screenSize,
 
 	GLuint PixelFormat;
 
+	if (AntiAlias)
+	{
+		// Create a window to test antialiasing support
+		const c8* ClassName = "GLCIrrDeviceWin32";
+		HINSTANCE lhInstance = GetModuleHandle(0);
+
+		// Register Class
+		WNDCLASSEX wcex;
+		wcex.cbSize          = sizeof(WNDCLASSEX);
+		wcex.style          = CS_HREDRAW | CS_VREDRAW;
+		wcex.lpfnWndProc   = (WNDPROC)DefWindowProc;
+		wcex.cbClsExtra      = 0;
+		wcex.cbWndExtra      = 0;
+		wcex.hInstance      = lhInstance;
+		wcex.hIcon          = NULL;
+		wcex.hCursor      = LoadCursor(NULL, IDC_ARROW);
+		wcex.hbrBackground   = (HBRUSH)(COLOR_WINDOW+1);
+		wcex.lpszMenuName   = 0;
+		wcex.lpszClassName   = ClassName;
+		wcex.hIconSm      = 0;
+		wcex.hIcon          = 0;
+
+		RegisterClassEx(&wcex);
+		RECT clientSize;
+		clientSize.top = 0;
+		clientSize.left = 0;
+		clientSize.right = params.WindowSize.Width;
+		clientSize.bottom = params.WindowSize.Height;
+
+		DWORD style = WS_POPUP;
+
+		if (!params.Fullscreen)
+			style = WS_SYSMENU | WS_BORDER | WS_CAPTION | WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
+
+		AdjustWindowRect(&clientSize, style, FALSE);
+
+		const s32 realWidth = clientSize.right - clientSize.left;
+		const s32 realHeight = clientSize.bottom - clientSize.top;
+
+		const s32 windowLeft = (GetSystemMetrics(SM_CXSCREEN) - realWidth) / 2;
+		const s32 windowTop = (GetSystemMetrics(SM_CYSCREEN) - realHeight) / 2;
+
+		HWND temporary_wnd=CreateWindow(ClassName, "", style, windowLeft, windowTop,
+			realWidth, realHeight,   NULL, NULL, lhInstance, NULL);
+
+		if(!temporary_wnd)
+		{
+			os::Printer::log("Cannot create a temporary window.", ELL_ERROR);
+			return false;
+		}
+
+		HDc = GetDC(temporary_wnd);
+		for (u32 i=0; i<5; ++i)
+		{
+			if (i == 1)
+			{
+				if (params.Stencilbuffer)
+				{
+					os::Printer::log("Cannot create a GL device with stencil buffer, disabling stencil shadows.", ELL_WARNING);
+					params.Stencilbuffer = false;
+					pfd.cStencilBits = 0;
+				}
+				else
+					continue;
+			}
+			else
+			if (i == 2)
+			{
+				pfd.cDepthBits = 24;
+			}
+			if (i == 3)
+			{
+				if (params.Bits!=16)
+					pfd.cDepthBits = 16;
+				else
+					continue;
+			}
+			else
+			if (i == 4)
+			{
+				os::Printer::log("Cannot create a GL device context", "No suitable format for temporary window.", ELL_ERROR);
+				ReleaseDC(temporary_wnd, HDc);
+				DestroyWindow(temporary_wnd);
+				return false;
+			}
+
+			// choose pixelformat
+			if ((PixelFormat = ChoosePixelFormat(HDc, &pfd)))
+				break;
+		}
+
+		SetPixelFormat(HDc, PixelFormat, &pfd);
+		HRc=wglCreateContext(HDc);
+		if(!HRc)
+		{
+			os::Printer::log("Cannot create a temporary GL rendering context.", ELL_ERROR);
+			ReleaseDC(temporary_wnd, HDc);
+			DestroyWindow(temporary_wnd);
+			return false;
+		}
+
+		if(!wglMakeCurrent(HDc, HRc))
+		{
+			os::Printer::log("Cannot activate a temporary GL rendering context.", ELL_ERROR);
+			wglDeleteContext(HRc);
+			ReleaseDC(temporary_wnd, HDc);
+			DestroyWindow(temporary_wnd);
+			return false;
+		}
+
+		PFNWGLCHOOSEPIXELFORMATARBPROC wglChoosePixelFormat_ARB = (PFNWGLCHOOSEPIXELFORMATARBPROC)wglGetProcAddress("wglChoosePixelFormatARB");
+		if(wglChoosePixelFormat_ARB)
+		{
+			// This value determines the number of samples used for antialiasing
+			// valid numbers are 2, 4, 8.  My experience is that 8 does not
+			// show a big improvement over 4, but 4 shows a big improvement over
+			// 2.
+			const s32 numSamples = 4;
+			f32 fAttributes[] =
+			{
+				0.0, 0.0
+			};
+
+			s32 iAttributes[] =
+			{
+				WGL_DRAW_TO_WINDOW_ARB,GL_TRUE,
+				WGL_SUPPORT_OPENGL_ARB,GL_TRUE,
+				WGL_ACCELERATION_ARB,WGL_FULL_ACCELERATION_ARB,
+				WGL_COLOR_BITS_ARB,(params.Bits==32) ? 24 : 15,
+				WGL_ALPHA_BITS_ARB,(params.Bits==32) ? 8 : 1,
+				WGL_DEPTH_BITS_ARB,params.ZBufferBits,
+				WGL_STENCIL_BITS_ARB,(params.Stencilbuffer) ? 1 : 0,
+				WGL_DOUBLE_BUFFER_ARB,GL_TRUE,
+				WGL_SAMPLE_BUFFERS_ARB,GL_TRUE,
+				WGL_SAMPLES_ARB,numSamples,
+				0,0
+			};
+			s32 rv=0;
+
+			// Try to get an acceptable pixel format
+			while(rv==0 && iAttributes[19]>1)
+			{
+				s32 pixelFormat=0;
+				u32 numFormats=0;
+				const s32 valid = wglChoosePixelFormat_ARB(HDc,iAttributes,fAttributes,1,&pixelFormat,&numFormats);
+
+				if(valid && numFormats>0)
+					rv = pixelFormat;
+				else
+					iAttributes[19] >>= 1;
+			}
+			if(rv)
+				PixelFormat=rv;
+		}
+
+		wglMakeCurrent(HDc, NULL);
+		wglDeleteContext(HRc);
+		ReleaseDC(temporary_wnd, HDc);
+		DestroyWindow(temporary_wnd);
+	}
+
 	// get hdc
-	if (!(HDc=GetDC(window)))
+	if (!(HDc=GetDC(Window)))
 	{
 		os::Printer::log("Cannot create a GL device context.", ELL_ERROR);
 		return false;
 	}
 
+	// search for pixel format the simple way
+	if (!AntiAlias)
+	{
 		for (u32 i=0; i<5; ++i)
 		{
 			if (i == 1)
 			{
-			if (stencilBuffer)
+				if (params.Stencilbuffer)
 				{
 					os::Printer::log("Cannot create a GL device with stencil buffer, disabling stencil shadows.", ELL_WARNING);
-				stencilBuffer = false;
+					params.Stencilbuffer = false;
 					pfd.cStencilBits = 0;
 				}
 				else
@@ -100,7 +262,7 @@ bool COpenGLDriver::initDriver(const core::dimension2d<s32>& screenSize,
 			}
 			if (i == 3)
 			{
-			if (bits!=16)
+				if (params.Bits!=16)
 					pfd.cDepthBits = 16;
 				else
 					continue;
@@ -108,15 +270,14 @@ bool COpenGLDriver::initDriver(const core::dimension2d<s32>& screenSize,
 			else
 			if (i == 4)
 			{
-			os::Printer::log("Cannot create a GL device context.", ELL_ERROR);
+				os::Printer::log("Cannot create a GL device context", "No suitable format.", ELL_ERROR);
 				return false;
 			}
 
 			// choose pixelformat
 			if ((PixelFormat = ChoosePixelFormat(HDc, &pfd)))
 				break;
-		else
-			os::Printer::log("Cannot find a suitable pixelformat.", ELL_ERROR);
+		}
 	}
 
 	// set pixel format
@@ -158,11 +319,11 @@ bool COpenGLDriver::initDriver(const core::dimension2d<s32>& screenSize,
 			ColorFormat = ECF_R5G6B5;
 	}
 
-	genericDriverInit(screenSize, stencilBuffer);
+	genericDriverInit(params.WindowSize, params.Stencilbuffer);
 
 	// set vsync
 	if (wglSwapIntervalEXT)
-		wglSwapIntervalEXT(vsync ? 1 : 0);
+		wglSwapIntervalEXT(params.Vsync ? 1 : 0);
 
 	// set exposed data
 	ExposedData.OpenGLWin32.HDc = HDc;
@@ -2848,12 +3009,12 @@ namespace video
 // WINDOWS VERSION
 // -----------------------------------
 #ifdef _IRR_USE_WINDOWS_DEVICE_
-IVideoDriver* createOpenGLDriver(const core::dimension2d<s32>& screenSize,
-	HWND window, u32 bits, bool stencilBuffer, io::IFileSystem* io, bool vsync, bool antiAlias)
+IVideoDriver* createOpenGLDriver(const irr::SIrrlichtCreationParameters& params,
+	io::IFileSystem* io)
 {
 #ifdef _IRR_COMPILE_WITH_OPENGL_
-	COpenGLDriver* ogl =  new COpenGLDriver(screenSize, window, stencilBuffer, io, antiAlias);
-	if (!ogl->initDriver(screenSize, window, bits, vsync, stencilBuffer))
+	COpenGLDriver* ogl =  new COpenGLDriver(params, io);
+	if (!ogl->initDriver(params))
 	{
 		ogl->drop();
 		ogl = 0;

source/Irrlicht/COpenGLDriver.h

@@ -76,17 +76,7 @@ namespace video
 	{
 	public:
 
-		#ifdef _IRR_WINDOWS_API_
-		//! win32 constructor
-		COpenGLDriver(const core::dimension2d<s32>& screenSize, HWND window,
-			bool stencilBuffer, io::IFileSystem* io, bool antiAlias);
-
-		//! inits the windows specific parts of the open gl driver
-		bool initDriver(const core::dimension2d<s32>& screenSize, HWND window,
-			u32 bits, bool vsync, bool stencilBuffer);
-		#endif
-
-		#if defined(_IRR_USE_LINUX_DEVICE_) || defined(_IRR_USE_SDL_DEVICE_)
+		#if defined(_IRR_WINDOWS_API_) || defined(_IRR_USE_LINUX_DEVICE_) || defined(_IRR_USE_SDL_DEVICE_)
 		COpenGLDriver(const SIrrlichtCreationParameters& params, io::IFileSystem* io);
 		#endif
 
@@ -95,6 +85,11 @@ namespace video
 				io::IFileSystem* io, CIrrDeviceMacOSX *device);
 		#endif
 
+		#ifdef _IRR_WINDOWS_API_
+		//! inits the windows specific parts of the open gl driver
+		bool initDriver(SIrrlichtCreationParameters params);
+		#endif
+
 		//! destructor
 		virtual ~COpenGLDriver();