More clean up for synch with 0.8.42

src/osg/Depth.cpp

@@ -0,0 +1,25 @@
+#include <osg/Depth>
+
+using namespace osg;
+
+Depth::Depth()
+{
+    _func = LESS;
+    _depthWriteMask = true;
+
+    _zNear = 0.0;
+    _zFar = 1.0;
+}
+
+
+Depth::~Depth()
+{
+}
+
+void Depth::apply(State&) const
+{
+    glDepthFunc((GLenum)_func);
+    glDepthMask((GLboolean)_depthWriteMask);
+    glDepthRange(_zNear,_zFar);
+}
+