More clean up for synch with 0.8.42

src/osgUtil/RenderStageLighting.cpp

@@ -0,0 +1,61 @@
+#include <osgUtil/RenderStageLighting>
+
+using namespace osg;
+using namespace osgUtil;
+
+// register a RenderStageLighting prototype with the RenderBin prototype list.
+//RegisterRenderBinProxy<RenderStageLighting> s_registerRenderStageLightingProxy;
+
+RenderStageLighting::RenderStageLighting()
+{
+}
+
+RenderStageLighting::~RenderStageLighting()
+{
+}
+
+void RenderStageLighting::reset()
+{
+    _lightList.clear();
+}
+
+void RenderStageLighting::draw(osg::State& state,RenderLeaf*& previous)
+{
+
+    if (previous)
+    {
+        RenderGraph::moveToRootRenderGraph(state,previous->_parent);
+        state.apply();
+        if (previous->_matrix.valid()) glPopMatrix();
+        previous = NULL;
+    }
+
+    Matrix* prev_matrix = NULL;
+
+    // apply the light list.
+    for(LightList::iterator litr=_lightList.begin();
+        litr!=_lightList.end();
+        ++litr)
+    {
+        Matrix* matrix = (*litr).second.get();
+        if (matrix != prev_matrix)
+        {
+            if (prev_matrix) glPopMatrix();
+
+            if (matrix)
+            {
+                glPushMatrix();
+                glMultMatrixf((GLfloat*)matrix->_mat);
+            }
+
+            prev_matrix = matrix;
+        }
+
+        // apply the light source.
+        litr->first->apply(state);
+            
+    }
+    // clean up matrix stack.
+    if (prev_matrix) glPopMatrix();
+
+}