+#if TARGET_HOST_MS_WINDOWS
+/* The following include file is available from SGI but is not standard:
+ * #include <GL/wglext.h>
+ * So we copy the necessary parts out of it.
+ * XXX: should local definitions for extensions be put in a separate include file?
+ */
+typedef const char * (WINAPI * PFNWGLGETEXTENSIONSSTRINGARBPROC) (HDC hdc);
+
+typedef BOOL (WINAPI * PFNWGLCHOOSEPIXELFORMATARBPROC) (HDC hdc, const int *piAttribIList, const FLOAT *pfAttribFList, UINT nMaxFormats, int *piFormats, UINT *nNumFormats);
+
+#define WGL_DRAW_TO_WINDOW_ARB 0x2001
+#define WGL_ACCELERATION_ARB 0x2003
+#define WGL_SUPPORT_OPENGL_ARB 0x2010
+#define WGL_DOUBLE_BUFFER_ARB 0x2011
+#define WGL_COLOR_BITS_ARB 0x2014
+#define WGL_ALPHA_BITS_ARB 0x201B
+#define WGL_DEPTH_BITS_ARB 0x2022
+#define WGL_STENCIL_BITS_ARB 0x2023
+#define WGL_FULL_ACCELERATION_ARB 0x2027
+
+#define WGL_SAMPLE_BUFFERS_ARB 0x2041
+#define WGL_SAMPLES_ARB 0x2042
+
+
+#ifndef WGL_ARB_create_context
+#define WGL_ARB_create_context 1
+#ifdef WGL_WGLEXT_PROTOTYPES
+extern HGLRC WINAPI wglCreateContextAttribsARB (HDC, HGLRC, const int *);
+#endif /* WGL_WGLEXT_PROTOTYPES */
+typedef HGLRC (WINAPI * PFNWGLCREATECONTEXTATTRIBSARBPROC) (HDC hDC, HGLRC hShareContext, const int *attribList);
+
+#define WGL_CONTEXT_DEBUG_BIT_ARB 0x0001
+#define WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB 0x0002
+#define WGL_CONTEXT_MAJOR_VERSION_ARB 0x2091
+#define WGL_CONTEXT_MINOR_VERSION_ARB 0x2092
+#define WGL_CONTEXT_LAYER_PLANE_ARB 0x2093
+#define WGL_CONTEXT_FLAGS_ARB 0x2094
+#define ERROR_INVALID_VERSION_ARB 0x2095
+#endif
+
+
+void fgNewWGLCreateContext( SFG_Window* window )
+{
+ PFNWGLGETEXTENSIONSSTRINGARBPROC wglGetEntensionsStringARB;
+ HGLRC context;
+ int attribs[7];
+ PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribsARB;
+ const char * pWglExtString;
+
+ /* If nothing fancy has been required, leave the context as it is */
+ if ( fgState.MajorVersion == 1 && fgState.MinorVersion == 0 && fgState.ContextFlags == 0 )
+ {
+ return;
+ }
+
+ wglMakeCurrent( window->Window.Device,
+ window->Window.Context );
+
+ wglGetEntensionsStringARB=(PFNWGLGETEXTENSIONSSTRINGARBPROC)wglGetProcAddress("wglGetExtensionsStringARB");
+ if ( wglGetEntensionsStringARB == NULL )
+ {
+ return;
+ }
+
+ pWglExtString=wglGetEntensionsStringARB(window->Window.Device);
+ if (( pWglExtString == NULL ) || ( strstr(pWglExtString, "WGL_ARB_create_context") == NULL ))
+ {
+ return;
+ }
+
+ /* new context creation */
+ attribs[0] = WGL_CONTEXT_MAJOR_VERSION_ARB;
+ attribs[1] = fgState.MajorVersion;
+ attribs[2] = WGL_CONTEXT_MINOR_VERSION_ARB;
+ attribs[3] = fgState.MinorVersion;
+ attribs[4] = WGL_CONTEXT_FLAGS_ARB;
+ attribs[5] = ((fgState.ContextFlags & GLUT_DEBUG) ? WGL_CONTEXT_DEBUG_BIT_ARB : 0) |
+ ((fgState.ContextFlags & GLUT_FORWARD_COMPATIBLE) ? WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB : 0);
+ attribs[6] = 0;
+
+ wglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC) wglGetProcAddress( "wglCreateContextAttribsARB" );
+ if ( wglCreateContextAttribsARB == NULL )
+ {
+ fgError( "wglCreateContextAttribsARB not found" );
+ }
+
+ context = wglCreateContextAttribsARB( window->Window.Device, 0, attribs );
+ if ( context == NULL )
+ {
+ fgError( "Unable to create OpenGL %d.%d context (flags %x)",
+ fgState.MajorVersion, fgState.MinorVersion, fgState.ContextFlags );
+ }
+
+ wglMakeCurrent( NULL, NULL );
+ wglDeleteContext( window->Window.Context );
+ window->Window.Context = context;
+}
+
+