--- src/Main/WindowBuilder.cxx.orig 2010-02-17 17:11:56.000000000 +0100
+++ /src/Main/WindowBuilder.cxx	2010-11-26 01:47:38.260867435 +0100
@@ -95,6 +95,18 @@
 #endif
         traits->supportsResize = true;
     }
+    osg::DisplaySettings* ds = osg::DisplaySettings::instance();
+    if (ds->getStereo())
+    	{
+	switch(ds->getStereoMode())
+		{
+			case(osg::DisplaySettings::QUAD_BUFFER): traits->quadBufferStereo = true; break;
+	                case(osg::DisplaySettings::VERTICAL_INTERLACE):
+			case(osg::DisplaySettings::CHECKERBOARD):
+			case(osg::DisplaySettings::HORIZONTAL_INTERLACE): traits->stencil = 8; break;
+			default: break;
+		}
+	}
     return traits;
 }
 }