Extend OpenGL creation under win32 for easy access to OpenGL versions.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@2874 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/COpenGLDriver.cpp

@@ -74,8 +74,6 @@ bool COpenGLDriver::initDriver(irr::SIrrlichtCreationParameters params, CIrrDevi
 
 	GLuint PixelFormat;
 
-	if (AntiAlias > 1)
-	{
 	// Create a window to test antialiasing support
 		const fschar_t* ClassName = __TEXT("GLCIrrDeviceWin32");
 	HINSTANCE lhInstance = GetModuleHandle(0);
@@ -126,6 +124,7 @@ bool COpenGLDriver::initDriver(irr::SIrrlichtCreationParameters params, CIrrDevi
 	}
 
 	HDc = GetDC(temporary_wnd);
+
 	for (u32 i=0; i<5; ++i)
 	{
 		if (i == 1)
@@ -194,6 +193,20 @@ bool COpenGLDriver::initDriver(irr::SIrrlichtCreationParameters params, CIrrDevi
 		return false;
 	}
 
+#ifdef _DEBUG
+	core::stringc wglExtensions;
+#ifdef WGL_ARB_extensions_string
+	PFNWGLGETEXTENSIONSSTRINGARBPROC irrGetExtensionsString = (PFNWGLGETEXTENSIONSSTRINGARBPROC)wglGetProcAddress("wglGetExtensionsStringARB");
+	if (irrGetExtensionsString)
+		wglExtensions = irrGetExtensionsString(HDc);
+#elif defined(WGL_EXT_extensions_string)
+	PFNWGLGETEXTENSIONSSTRINGEXTPROC irrGetExtensionsString = (PFNWGLGETEXTENSIONSSTRINGEXTPROC)wglGetProcAddress("wglGetExtensionsStringEXT");
+	if (irrGetExtensionsString)
+		wglExtensions = irrGetExtensionsString(HDc);
+#endif
+	os::Printer::log("WGL_extensions", wglExtensions);
+#endif
+
 #ifdef WGL_ARB_pixel_format
 	PFNWGLCHOOSEPIXELFORMATARBPROC wglChoosePixelFormat_ARB = (PFNWGLCHOOSEPIXELFORMATARBPROC)wglGetProcAddress("wglChoosePixelFormatARB");
 	if (wglChoosePixelFormat_ARB)
@@ -267,7 +280,6 @@ bool COpenGLDriver::initDriver(irr::SIrrlichtCreationParameters params, CIrrDevi
 	wglDeleteContext(HRc);
 	ReleaseDC(temporary_wnd, HDc);
 	DestroyWindow(temporary_wnd);
-	}
 
 	// get hdc
 	HDc=GetDC(Window);
@@ -330,7 +342,15 @@ bool COpenGLDriver::initDriver(irr::SIrrlichtCreationParameters params, CIrrDevi
 #ifdef WGL_ARB_create_context
 	PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribs_ARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)wglGetProcAddress("wglCreateContextAttribsARB");
 	if (wglCreateContextAttribs_ARB)
-		HRc=wglCreateContextAttribs_ARB(HDc, 0, NULL);
+	{
+		int iAttribs[] =
+		{
+			WGL_CONTEXT_MAJOR_VERSION_ARB, 3,
+			WGL_CONTEXT_MINOR_VERSION_ARB, 1,
+			0
+		};
+		HRc=wglCreateContextAttribs_ARB(HDc, 0, iAttribs);
+	}
 	else
 #endif
 		HRc=wglCreateContext(HDc);