Changeset 868 for GTP/trunk/Lib/Vis/OnlineCullingCHC/OGRE/src/OgreOcclusionCullingSceneManager.cpp

Timestamp:

05/01/06 00:08:09 (18 years ago)

Author:

mattausch

Message:

fitting objects to bb, debug

File:

• GTP/trunk/Lib/Vis/OnlineCullingCHC/OGRE/src/OgreOcclusionCullingSceneManager.cpp (modified) (10 diffs)

GTP/trunk/Lib/Vis/OnlineCullingCHC/OGRE/src/OgreOcclusionCullingSceneManager.cpp

@@ -15 +15 @@
 #include "ViewCellsManager.h"
 
+
+// normal terrain rendering
+const static NORMAL_RENDER_HACK = false;
+
 namespace Ogre {
 
@@ -20 +24 @@
 OcclusionCullingSceneManager::OcclusionCullingSceneManager(
                                                         GtpVisibility::VisibilityManager *visManager): 
+TerrainSceneManager(),
 mVisibilityManager(visManager), 
 mShowVisualization(false),
@@ -30 +35 @@
 mIsDepthPassPhase(false),
 mUseItemBuffer(false),
-//mUseItemBuffer(true),
 mIsItemBufferPhase(false),
 mCurrentEntityId(1),
@@ -41 +45 @@
         mHierarchyInterface = new OctreeHierarchyInterface(this, mDestRenderSystem);
         
-#if 0
+        if (0)
+        {
         mDisplayNodes = true;
         mShowBoundingBoxes = true;
         mShowBoxes = true;
-#endif
+        }
+
         // TODO: set maxdepth to reasonable value
         mMaxDepth = 50;
@@ -98 +104 @@
         }
         //mItemBufferPass->setAmbient(1, 1, 0);
+}
+//-----------------------------------------------------------------------
+void OcclusionCullingSceneManager::PrepareVisualization(Camera *cam)
+{
+        // add player camera for visualization purpose
+        try 
+        {
+                Camera *c;
+                if ((c = getCamera("PlayerCam")) != NULL)
+                {
+                        getRenderQueue()->addRenderable(c);
+                }   
+    }
+    catch (...)
+    {
+        // ignore
+    }
+        // add bounding boxes of rendered objects
+        for (BoxList::iterator it = mBoxes.begin(); it != mBoxes.end(); ++it)
+        {
+                getRenderQueue()->addRenderable(*it);
+        }
+        
+        if (mRenderNodesForViz || mRenderNodesContentForViz)
+        {
+                // HACK: change node material so it is better suited for visualization
+                MaterialPtr nodeMat = MaterialManager::getSingleton().getByName("Core/NodeMaterial");
+                nodeMat->setAmbient(1, 1, 0);
+                nodeMat->setLightingEnabled(true);
+                nodeMat->getTechnique(0)->getPass(0)->removeAllTextureUnitStates();
+
+                for (NodeList::iterator it = mVisible.begin(); it != mVisible.end(); ++it)
+                {
+                        if (mRenderNodesForViz)
+                        {
+                                // render the leaf nodes
+                                if (((*it)->numAttachedObjects() > 0) && ((*it)->numChildren() == 0) && 
+                                         (*it)->getAttachedObject(0)->getMovableType() == "Entity")
+                                {
+                                        getRenderQueue()->addRenderable((*it));
+                                }
+
+                                // addbounding boxes instead of node itself
+                                //(*it)->_addBoundingBoxToQueue(getRenderQueue());
+                        }
+                        if (mRenderNodesContentForViz) 
+                        {
+                                (*it)->_addToRenderQueue(cam, getRenderQueue(), false);
+                        }
+                }
+        }       
+}
+//-----------------------------------------------------------------------
+Pass *OcclusionCullingSceneManager::setPass(Pass* pass)
+{
+        if (NORMAL_RENDER_HACK)
+        {
+                return SceneManager::setPass(pass);
+        }
+
+        // TODO: setting vertex program is not efficient
+        //Pass *usedPass = ((mIsDepthPassPhase && !pass->hasVertexProgram()) ? mDepthPass : pass); 
+        
+        // set depth fill pass if we currently do not make an aabb occlusion query
+        const bool useDepthPass = 
+                (mIsDepthPassPhase && !mHierarchyInterface->IsBoundingBoxQuery());
+
+        Pass *usedPass = useDepthPass ? mDepthPass : pass;
+                
+        IlluminationRenderStage savedStage = mIlluminationStage; 
+        
+        // set illumination stage to NONE so no shadow material is used 
+        // for depth pass or for occlusion query
+        if (mIsDepthPassPhase || mHierarchyInterface->IsBoundingBoxQuery())
+        {
+                mIlluminationStage = IRS_NONE;
+        }
+        
+        // --- set vertex program of current pass in order to set correct depth
+        if (mExecuteVertexProgramForAllPasses && 
+                mIsDepthPassPhase && 
+                pass->hasVertexProgram())
+        {
+                // add vertex program of current pass to depth pass
+                mDepthPass->setVertexProgram(pass->getVertexProgramName());
+
+                if (mDepthPass->hasVertexProgram())
+                {
+                        const GpuProgramPtr& prg = mDepthPass->getVertexProgram();
+                        // Load this program if not done already
+                        if (!prg->isLoaded())
+                                prg->load();
+                        // Copy params
+                        mDepthPass->setVertexProgramParameters(pass->getVertexProgramParameters());
+                }
+        }
+        else if (mDepthPass->hasVertexProgram()) // reset vertex program
+        {
+                mDepthPass->setVertexProgram("");
+        }
+        
+        // save old depth write: needed for item buffer
+        const bool IsDepthWrite = usedPass->getDepthWriteEnabled();
+
+        // global option which enables / disables depth writes
+        if (!mEnableDepthWrite)
+        {
+                usedPass->setDepthWriteEnabled(false);
+        }
+        //else if (mIsItemBufferPass) {usedPass = mItemBufferPass;}
+        
+
+        //-- set actual pass here
+        Pass *result = SceneManager::setPass(usedPass);
+
+
+        // reset depth write
+        if (!mEnableDepthWrite)
+        {
+                usedPass->setDepthWriteEnabled(IsDepthWrite);
+        }
+
+        // reset illumination stage
+        mIlluminationStage = savedStage;
+
+        return result;
+}
+//-----------------------------------------------------------------------
+void OcclusionCullingSceneManager::_findVisibleObjects(Camera* cam, bool onlyShadowCasters)
+{
+        if (NORMAL_RENDER_HACK)
+        {
+                OctreeSceneManager::_findVisibleObjects(cam, onlyShadowCasters);
+                return;
+        }
+
+        //-- show visible scene nodes and octree bounding boxes from last frame
+        if (mShowVisualization)
+    {
+                PrepareVisualization(cam);
+        }
+        else 
+        {       
+                // for hierarchical culling, we interleave identification 
+                // and rendering of objects in _renderVisibibleObjects
+
+                // for the shadow pass we use only standard rendering
+                // because of low occlusion
+                if (mShadowTechnique == SHADOWTYPE_TEXTURE_MODULATIVE && 
+                        mIlluminationStage == IRS_RENDER_TO_TEXTURE)
+                {
+                        OctreeSceneManager::_findVisibleObjects(cam, onlyShadowCasters);
+                }
+                // only shadow casters will be rendered in shadow texture pass
+                if (0) mHierarchyInterface->SetOnlyShadowCasters(onlyShadowCasters);
+        }
+        
+        
+        // -- delete lists stored for visualization
+        mVisible.clear();
+        mBoxes.clear();
+}
+//-----------------------------------------------------------------------
+void OcclusionCullingSceneManager::_renderVisibleObjects()
+{
+        if (NORMAL_RENDER_HACK)
+        {
+                OctreeSceneManager::_renderVisibleObjects();
+
+                return;
+        }
+
+        InitDepthPass();          // create material for depth pass
+        InitItemBufferPass(); // create material for item buffer pass
+
+        // save ambient light to reset later
+        ColourValue savedAmbient = mAmbientLight;
+
+        //-- apply standard rendering for some modes (e.g., visualization, shadow pass)
+
+        if (mShowVisualization ||
+           (mShadowTechnique == SHADOWTYPE_TEXTURE_MODULATIVE && 
+            mIlluminationStage == IRS_RENDER_TO_TEXTURE))
+        {       
+                IlluminationRenderStage savedStage = mIlluminationStage; 
+        
+                if (mShowVisualization) 
+                {
+                        // disable illumination stage to prevent rendering shadows
+                        mIlluminationStage = IRS_NONE;
+                }
+
+                // standard rendering for shadow maps because of performance
+                TerrainSceneManager::_renderVisibleObjects();
+
+                mIlluminationStage = savedStage;
+        }
+        else //-- the hierarchical culling algorithm
+        {
+                // this is also called in TerrainSceneManager: really
+                // nexessary?
+                mDestRenderSystem -> setLightingEnabled(false);
+
+                // don't render backgrounds for item buffer
+                if (mUseItemBuffer)
+                {
+                        clearSpecialCaseRenderQueues();
+                        getRenderQueue()->clear();
+                }
+
+                //-- hierarchical culling
+                // the objects of different layers (e.g., background, scene, 
+                // overlay) must be identified and rendered one after another
+
+                //-- render all early skies
+                clearSpecialCaseRenderQueues();
+                addSpecialCaseRenderQueue(RENDER_QUEUE_BACKGROUND);
+                addSpecialCaseRenderQueue(RENDER_QUEUE_SKIES_EARLY);
+                setSpecialCaseRenderQueueMode(SceneManager::SCRQM_INCLUDE);
+
+                TerrainSceneManager::_renderVisibleObjects();
+
+#ifdef GTP_VISIBILITY_MODIFIED_OGRE
+                // delete previously rendered content
+                _deleteRenderedQueueGroups();
+#endif
+
+                //-- prepare queue for visible objects (i.e., all but overlay and skies late)
+                clearSpecialCaseRenderQueues();
+                addSpecialCaseRenderQueue(RENDER_QUEUE_SKIES_LATE);
+                addSpecialCaseRenderQueue(RENDER_QUEUE_OVERLAY);
+                        
+                // exclude this queues from hierarchical rendering
+                setSpecialCaseRenderQueueMode(SceneManager::SCRQM_EXCLUDE);
+
+                // set all necessary parameters for 
+                // hierarchical visibility culling and rendering
+                InitVisibilityCulling(mCameraInProgress);
+
+        
+                /** 
+                * the hierarchical culling algorithm
+                * for depth pass: we just find objects and update depth buffer
+                * for "delayed" rendering: we render some passes afterwards
+                * e.g., transparents, because they need front-to-back sorting
+                **/
+                
+                mVisibilityManager->ApplyVisibilityCulling();
+
+                // delete remaining renderables from queue:
+                // all which are not in mLeavePassesInQueue)
+#ifdef GTP_VISIBILITY_MODIFIED_OGRE
+                _deleteRenderedQueueGroups(mLeavePassesInQueue);
+#endif
+
+                //-- reset parameters
+                mIsDepthPassPhase = false;
+                mIsItemBufferPhase = false;
+                mSkipTransparents = false;
+                mIsHierarchicalCulling = false;
+                
+                mLeavePassesInQueue = 0;
+
+#if 1   
+                // add visible nodes found by the visibility culling algorithm
+                if (mUseDepthPass)
+                {
+                        NodeList::const_iterator it, it_end = mVisible.end();
+
+                        //getRenderQueue()->clear();
+                        for (it = mVisible.begin(); it != it_end; ++ it)
+                        {
+                                (*it)->_addToRenderQueue(mCameraInProgress, getRenderQueue(), false);
+                        }
+                }
+#endif  
+                //-- now we can render all remaining queue objects
+                //-- used for depth pass, transparents, overlay
+                clearSpecialCaseRenderQueues();
+
+                TerrainSceneManager::_renderVisibleObjects();
+        } // hierarchical culling
+                
+        // HACK: set the new render level index, important to avoid cracks
+        // in terrain caused by LOD
+        TerrainRenderable::NextRenderLevelIndex();
+        
+        // reset ambient light
+        setAmbientLight(savedAmbient);
+
+        getRenderQueue()->clear(); // finally clear render queue
+        if (0) OGRE_DELETE(mRenderQueue); // HACK: should rather only be cleared ...
+
+        if (0) WriteLog(); // write out stats
+}
+
+//-----------------------------------------------------------------------
+void OcclusionCullingSceneManager::_updateSceneGraph(Camera* cam)
+{
+        if (NORMAL_RENDER_HACK)
+        {
+                OctreeSceneManager::_updateSceneGraph(cam);
+                return;
+        }
+
+        mVisibilityManager->GetCullingManager()->SetHierarchyInterface(mHierarchyInterface);
+        mHierarchyInterface->SetRenderSystem(mDestRenderSystem);
+
+        TerrainSceneManager::_updateSceneGraph(cam);
+}
+//-----------------------------------------------------------------------
+bool OcclusionCullingSceneManager::setOption(const String & key, const void * val)
+{
+        if (key == "UseDepthPass")
+        {
+                mUseDepthPass = (*static_cast<const bool *>(val));
+                return true;
+        }
+        if (key == "PrepareVisualization")
+        {
+                mShowVisualization = (*static_cast<const bool *>(val));
+                return true;
+        }
+        if (key == "RenderNodesForViz")
+        {
+                mRenderNodesForViz = (*static_cast<const bool *>(val));
+                return true;
+        }
+        if (key == "RenderNodesContentForViz")
+        {
+                mRenderNodesContentForViz = (*static_cast<const bool *>(val));
+                return true;
+        }
+        if (key == "SkyBoxEnabled")
+        {
+                mSkyBoxEnabled = (*static_cast<const bool *>(val));
+                return true;
+        }
+        if (key == "SkyPlaneEnabled")
+        {
+                mSkyPlaneEnabled = (*static_cast<const bool *>(val));
+                return true;
+        }
+        if (key == "SkyDomeEnabled")
+        {
+                mSkyDomeEnabled = (*static_cast<const bool *>(val));
+                return true;
+        }
+        if (key == "VisualizeCulledNodes")
+        {
+                mVisualizeCulledNodes = (*static_cast<const bool *>(val));
+                return true;
+        }
+        if (key == "DelayRenderTransparents")
+        {
+                mDelayRenderTransparents = (*static_cast<const bool *>(val));
+                return true;
+        }
+
+        if (key == "DepthWrite")
+        {
+                mEnableDepthWrite = (*static_cast<const bool *>(val));
+                return true;
+        }
+        if (key == "UseItemBuffer")
+        {
+                mUseItemBuffer = (*static_cast<const bool *>(val));
+                return true;
+        }
+        if (key == "ExecuteVertexProgramForAllPasses")
+        { 
+                mExecuteVertexProgramForAllPasses  = (*static_cast<const bool *>(val));
+                return true;
+        }
+        if (key == "RenderTransparentsForItemBuffer")
+        { 
+                mRenderTransparentsForItemBuffer  = (*static_cast<const bool *>(val));
+                return true;
+        }
+        if (key == "NodeVizScale")
+        { 
+                OctreeNode::setVizScale(*static_cast<const float *>(val));
+                return true;
+        }
+
+        if (key == "UseArbQueries")
+        {
+                bool useArbQueries = (*static_cast<const bool *>(val));
+
+                if (useArbQueries)
+                {
+                        mHierarchyInterface->DeleteQueries();
+                        mDestRenderSystem->setConfigOption("ArbQueries", "Yes");
+                }
+                else
+                {
+                        mHierarchyInterface->DeleteQueries();
+                        mDestRenderSystem->setConfigOption("ArbQueries", "No");
+                }
+        }
+
+        return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
+                setOption(key, val) || TerrainSceneManager::setOption(key, val);
+}
+//-----------------------------------------------------------------------
+bool OcclusionCullingSceneManager::getOption(const String & key, void *val)
+{
+        if (key == "NumHierarchyNodes")
+        {
+                * static_cast<unsigned int *>(val) = (unsigned int)mNumOctants;
+                return true;
+        }
+        
+        return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
+                getOption(key, val) && TerrainSceneManager::getOption(key, val);
+}
+//-----------------------------------------------------------------------
+bool OcclusionCullingSceneManager::getOptionValues(const String & key, 
+                                                                                                        StringVector &refValueList)
+{
+        return TerrainSceneManager::getOptionValues( key, refValueList);
+}
+//-----------------------------------------------------------------------
+bool OcclusionCullingSceneManager::getOptionKeys(StringVector & refKeys)
+{
+        return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
+                getOptionKeys(refKeys) || TerrainSceneManager::getOptionKeys(refKeys);
+}
+//-----------------------------------------------------------------------
+void OcclusionCullingSceneManager::setVisibilityManager(GtpVisibility::
+                                                                                                                 VisibilityManager *visManager)
+{
+        mVisibilityManager = visManager;
+}
+//-----------------------------------------------------------------------
+GtpVisibility::VisibilityManager *OcclusionCullingSceneManager::getVisibilityManager( void )
+{
+        return mVisibilityManager;
+}
+//-----------------------------------------------------------------------
+void OcclusionCullingSceneManager::WriteLog()
+{
+        std::stringstream d;
+
+        d << "Depth pass: " << StringConverter::toString(mUseDepthPass) << ", "
+          << "Delay transparents: " << StringConverter::toString(mDelayRenderTransparents) << ", "
+          << "Use optimization: " << StringConverter::toString(mHierarchyInterface->GetTestGeometryForVisibleLeaves()) << ", "
+          << "Algorithm type: " << mVisibilityManager->GetCullingManagerType() << ", "
+          << "Hierarchy nodes: " << mNumOctants << ", " 
+          << "Traversed nodes: " << mHierarchyInterface->GetNumTraversedNodes() << ", "
+          << "Rendered nodes: " << mHierarchyInterface->GetNumRenderedNodes() << ", "
+          << "Query culled nodes: " << mVisibilityManager->GetCullingManager()->GetNumQueryCulledNodes() << ", "
+          << "Frustum culled nodes: " << mVisibilityManager->GetCullingManager()->GetNumFrustumCulledNodes() << ", "
+      << "Queries issued: " << mVisibilityManager->GetCullingManager()->GetNumQueriesIssued() << ", "
+          << "Found objects: " << (int)mVisible.size() << "\n";
+
+        LogManager::getSingleton().logMessage(d.str());
+}
+//-----------------------------------------------------------------------
+void OcclusionCullingSceneManager::renderObjects(
+        const RenderPriorityGroup::TransparentRenderablePassList& objs, 
+    bool doLightIteration, const LightList* manualLightList)
+{
+        // for correct rendering, transparents must be rendered after hierarchical culling
+        // => do nothing
+        if (NORMAL_RENDER_HACK || !mSkipTransparents)
+        {
+                OctreeSceneManager::renderObjects(objs, doLightIteration, manualLightList);
+        }
+}
+//-----------------------------------------------------------------------
+bool OcclusionCullingSceneManager::validatePassForRendering(Pass* pass)
+{
+        if (NORMAL_RENDER_HACK)
+        {
+                return SceneManager::validatePassForRendering(pass);
+        }
+
+        // skip all but first pass if we are doing the depth pass
+        if ((mIsDepthPassPhase || mIsItemBufferPhase) && (pass->getIndex() > 0))
+        {
+                return false;
+        }
+        // all but first pass
+        /*else if ((!mIsDepthPassPhase || mIsItemBufferPhase) && (pass->getIndex() != 0))
+        {
+                return false;
+        }*/
+
+        return SceneManager::validatePassForRendering(pass);
+}
+//-----------------------------------------------------------------------
+void OcclusionCullingSceneManager::renderQueueGroupObjects(RenderQueueGroup* pGroup)
+{
+        if (NORMAL_RENDER_HACK || !mIsItemBufferPhase)
+        {
+                TerrainSceneManager::renderQueueGroupObjects(pGroup);
+                return;
+        }
+
+        //-- item buffer: render objects using false colors
+
+    // Iterate through priorities
+    RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
+
+        while (groupIt.hasMoreElements())
+    {
+                RenderItemBuffer(groupIt.getNext());
+        }
+}
+//-----------------------------------------------------------------------
+void OcclusionCullingSceneManager::RenderItemBuffer(RenderPriorityGroup* pGroup)
+{
+        // Do solids
+        RenderPriorityGroup::SolidRenderablePassMap solidObjs = pGroup->_getSolidPasses();
+
+        // ----- SOLIDS LOOP -----
+        RenderPriorityGroup::SolidRenderablePassMap::const_iterator ipass, ipassend;
+        ipassend = solidObjs.end();
+
+        for (ipass = solidObjs.begin(); ipass != ipassend; ++ipass)
+        {
+                // Fast bypass if this group is now empty
+                if (ipass->second->empty()) 
+                        continue;
+
+                // Render only first pass of renderable as false color
+                if (ipass->first->getIndex() > 0)
+                        continue;
+
+                RenderPriorityGroup::RenderableList* rendList = ipass->second;
+                
+                RenderPriorityGroup::RenderableList::const_iterator irend, irendend;
+                irendend = rendList->end();
+                        
+                for (irend = rendList->begin(); irend != irendend; ++irend)
+                {
+                        if (0)
+                        {
+                        std::stringstream d; d << "itembuffer, pass name: " << 
+                                ipass->first->getParent()->getParent()->getName();
+                                
+                        LogManager::getSingleton().logMessage(d.str());
+                        }
+                        
+                        RenderSingleObjectForItemBuffer(*irend, ipass->first);
+                }
+        }
+
+        //-- TRANSPARENT LOOP: must be handled differently from solids
+
+        // transparents are treated either as solids or completely discarded
+        if (mRenderTransparentsForItemBuffer)
+        {
+                RenderPriorityGroup::TransparentRenderablePassList transpObjs = 
+                        pGroup->_getTransparentPasses();
+                RenderPriorityGroup::TransparentRenderablePassList::const_iterator 
+                        itrans, itransend;
+
+                itransend = transpObjs.end();
+                for (itrans = transpObjs.begin(); itrans != itransend; ++itrans)
+                {
+                        // like for solids, render only first pass
+                        if (itrans->pass->getIndex() == 0)
+                        {       
+                                RenderSingleObjectForItemBuffer(itrans->renderable, itrans->pass);
+                        }
+                }
+        }
+}
+//-----------------------------------------------------------------------
+void OcclusionCullingSceneManager::RenderSingleObjectForItemBuffer(Renderable *rend, Pass *pass)
+{
+        static LightList nullLightList;
+        
+        int col[4];
+        
+        // -- create color code out of object id
+        col[0] = (rend->getId() >> 16) & 255;
+        col[1] = (rend->getId() >> 8) & 255;
+        col[2] = rend->getId() & 255;
+//      col[3] = 255;
+
+        //mDestRenderSystem->setColour(col[0], col[1], col[2], col[3]);
+    
+        mItemBufferPass->setAmbient(ColourValue(col[0] / 255.0f,
+                                                                                    col[1] / 255.0f, 
+                                                                                        col[2] / 255.0f, 1));
+
+        // set vertex program of current pass
+        if (mExecuteVertexProgramForAllPasses && pass->hasVertexProgram())
+        {
+                mItemBufferPass->setVertexProgram(pass->getVertexProgramName());
+
+                if (mItemBufferPass->hasVertexProgram())
+                {
+                        const GpuProgramPtr& prg = mItemBufferPass->getVertexProgram();
+                        // Load this program if not done already
+                        if (!prg->isLoaded())
+                                prg->load();
+                        // Copy params
+                        mItemBufferPass->setVertexProgramParameters(pass->getVertexProgramParameters());
+                }
+        }
+        else if (mItemBufferPass->hasVertexProgram())
+        {
+                mItemBufferPass->setVertexProgram("");
+        }
+
+        Pass *usedPass = setPass(mItemBufferPass); 
+
+
+        // Render a single object, this will set up auto params if required
+        renderSingleObject(rend, usedPass, false, &nullLightList);
+}
+//-----------------------------------------------------------------------
+GtpVisibility::VisibilityManager *OcclusionCullingSceneManager::GetVisibilityManager()
+{
+        return mVisibilityManager;
+}
+//-----------------------------------------------------------------------
+void OcclusionCullingSceneManager::InitVisibilityCulling(Camera *cam)
+{
+        // reset culling manager stats
+        mVisibilityManager->GetCullingManager()->InitFrame(mVisualizeCulledNodes);
+
+        // set depth pass flag before rendering
+        mIsDepthPassPhase = mUseDepthPass;
+
+        mIsHierarchicalCulling = true; // during hierarchical culling
+
+        // item buffer needs full ambient lighting to use item colors as unique id
+        if (mUseItemBuffer) 
+        {
+                mIsItemBufferPhase = true;
+                setAmbientLight(ColourValue(1,1,1,1));
+        }
+
+
+        // set passes which are stored in render queue 
+        // for rendering AFTER hierarchical culling, i.e., passes which need 
+        // a special rendering order
+        
+        mLeavePassesInQueue = 0;
+
+        if (!mUseDepthPass && !mUseItemBuffer)
+        {
+                if (mShadowTechnique == SHADOWTYPE_STENCIL_ADDITIVE)
+                {
+                        // TODO: remove this pass because it should be processed during hierarchical culling
+                        //mLeavePassesInQueue |= RenderPriorityGroup::SOLID_PASSES_NOSHADOW;
+
+                        mLeavePassesInQueue |= RenderPriorityGroup::SOLID_PASSES_DECAL;
+                        mLeavePassesInQueue |= RenderPriorityGroup::SOLID_PASSES_DIFFUSE_SPECULAR;
+                        mLeavePassesInQueue |= RenderPriorityGroup::TRANSPARENT_PASSES;
+
+                        // just render ambient stuff
+                        mIlluminationStage = IRS_AMBIENT;
+                        getRenderQueue()->setSplitPassesByLightingType(true);
+                }
+        
+                if (mShadowTechnique == SHADOWTYPE_STENCIL_MODULATIVE)
+                {
+                        mLeavePassesInQueue |= RenderPriorityGroup::SOLID_PASSES_NOSHADOW;
+                        mLeavePassesInQueue |= RenderPriorityGroup::TRANSPARENT_PASSES;
+                }
+        
+                // transparents should be rendered after hierarchical culling to 
+                // provide front-to-back ordering
+                if (mDelayRenderTransparents)
+                {
+                        mLeavePassesInQueue |= RenderPriorityGroup::TRANSPARENT_PASSES;
+                }
+        }
+
+        // skip rendering transparents during the hierarchical culling
+        // (because they will be rendered afterwards)
+        mSkipTransparents = 
+                (mIsDepthPassPhase || (mLeavePassesInQueue & RenderPriorityGroup::TRANSPARENT_PASSES));
+
+        // -- initialise interface for rendering traversal of the hierarchy
+        mHierarchyInterface->SetHierarchyRoot(mOctree);
+        
+        // possible two cameras (one for culling, one for rendering)
+        mHierarchyInterface->InitTraversal(mCameraInProgress, 
+                                                                           mCullCamera ? getCamera("CullCamera") : NULL,
+                                                                           mLeavePassesInQueue);
+                
+}
+//-----------------------------------------------------------------------
+OctreeHierarchyInterface *OcclusionCullingSceneManager::GetHierarchyInterface()
+{
+        return mHierarchyInterface;
+}
+//-----------------------------------------------------------------------
+void OcclusionCullingSceneManager::endFrame()
+{
+        TerrainRenderable::ResetRenderLevelIndex();
+}
+//-----------------------------------------------------------------------
+Entity* OcclusionCullingSceneManager::createEntity(const String& entityName, 
+                                                                                                        const String& meshName)
+{
+        Entity *ent = SceneManager::createEntity(entityName, meshName);
+
+        for (int i = 0; i < (int)ent->getNumSubEntities(); ++i)
+        {
+                ent->getSubEntity(i)->setId(mCurrentEntityId);
+        }
+
+        // increase counter of entity id values
+        ++ mCurrentEntityId;
+
+        return ent;
+}
+//-----------------------------------------------------------------------
+void OcclusionCullingSceneManager::renderAdditiveStencilShadowedQueueGroupObjects(RenderQueueGroup* pGroup)
+{
+        // only render solid passes during hierarchical culling
+        if (mIsHierarchicalCulling)
+        {
+                RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
+            LightList lightList;
+
+                while (groupIt.hasMoreElements())
+                {
+                        RenderPriorityGroup* pPriorityGrp = groupIt.getNext();
+
+                        // Sort the queue first
+                        pPriorityGrp->sort(mCameraInProgress);
+
+                        // Clear light list
+                        lightList.clear();
+
+                        // Render all the ambient passes first, no light iteration, no lights
+                        mIlluminationStage = IRS_AMBIENT;
+
+                        OctreeSceneManager::renderObjects(pPriorityGrp->_getSolidPasses(), false, &lightList);
+                        // Also render any objects which have receive shadows disabled
+                        OctreeSceneManager::renderObjects(pPriorityGrp->_getSolidPassesNoShadow(), true);
+                }
+        }
+        else
+        {
+                OctreeSceneManager::renderAdditiveStencilShadowedQueueGroupObjects(pGroup);
+        }
+}
+//-----------------------------------------------------------------------
+void OcclusionCullingSceneManager::renderModulativeStencilShadowedQueueGroupObjects(RenderQueueGroup* pGroup)
+{
+   if (mIsHierarchicalCulling)
+   {
+           // Iterate through priorities
+           RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
+
+           while (groupIt.hasMoreElements())
+           {
+                   RenderPriorityGroup* pPriorityGrp = groupIt.getNext();
+
+                   // Sort the queue first
+                   pPriorityGrp->sort(mCameraInProgress);
+
+                   // Do (shadowable) solids
+                   OctreeSceneManager::renderObjects(pPriorityGrp->_getSolidPasses(), true);
+           }
+   }
+   else
+   {
+           SceneManager::renderModulativeStencilShadowedQueueGroupObjects(pGroup);
+   }
 }
 //-------------------------------------------------------------------------
@@ -123 +899 @@
     
     setupTerrainMaterial();
-
     setupTerrainPages();
-
- }
-
-//-----------------------------------------------------------------------
-void OcclusionCullingSceneManager::PrepareVisualization(Camera *cam)
-{
-        // add player camera for visualization purpose
-        try 
-        {
-                Camera *c;
-                if ((c = getCamera("PlayerCam")) != NULL)
-                {
-                        getRenderQueue()->addRenderable(c);
-                }   
-    }
-    catch (...)
-    {
-        // ignore
-    }
-        for (BoxList::iterator it = mBoxes.begin(); it != mBoxes.end(); ++it)
-        {
-                getRenderQueue()->addRenderable(*it);
-        }
-        if (mRenderNodesForViz || mRenderNodesContentForViz)
-        {
-                // HACK: change node material so it is better suited for visualization
-                MaterialPtr nodeMat = MaterialManager::getSingleton().getByName("Core/NodeMaterial");
-                nodeMat->setAmbient(1, 1, 0);
-                nodeMat->setLightingEnabled(true);
-                nodeMat->getTechnique(0)->getPass(0)->removeAllTextureUnitStates();
-
-                for (NodeList::iterator it = mVisible.begin(); it != mVisible.end(); ++it)
-                {
-                        if (mRenderNodesForViz)
-                        {
-                                // render the leaf nodes
-                                if (((*it)->numAttachedObjects() > 0) && ((*it)->numChildren() == 0) && 
-                                         (*it)->getAttachedObject(0)->getMovableType() == "Entity")
-                                {
-                                        getRenderQueue()->addRenderable((*it));
-                                }
-
-                                // addbounding boxes instead of node itself
-                                //(*it)->_addBoundingBoxToQueue(getRenderQueue());
-                        }
-                        if (mRenderNodesContentForViz) 
-                        {
-                                (*it)->_addToRenderQueue(cam, getRenderQueue(), false);
-                        }
-                }
-        }       
-}
-//-----------------------------------------------------------------------
-Pass *OcclusionCullingSceneManager::setPass(Pass* pass)
-{
-        // TODO: setting vertex program is not efficient
-        //Pass *usedPass = ((mIsDepthPassPhase && !pass->hasVertexProgram()) ? mDepthPass : pass); 
-        
-        // set depth fill pass if we currently do not make an aabb occlusion query
-        Pass *usedPass = (mIsDepthPassPhase && !mHierarchyInterface->IsBoundingBoxQuery() ? 
-                                          mDepthPass : pass);
-                
-        IlluminationRenderStage savedStage = mIlluminationStage; 
-        
-        // set illumination stage to NONE so no shadow material is used 
-        // for depth pass or for occlusion query
-        if (mIsDepthPassPhase || mHierarchyInterface->IsBoundingBoxQuery())
-        {
-                mIlluminationStage = IRS_NONE;
-        }
-        
-        // --- set vertex program of current pass in order to set correct depth
-        if (mExecuteVertexProgramForAllPasses && mIsDepthPassPhase && pass->hasVertexProgram())
-        {
-                // add vertex program of current pass to depth pass
-                mDepthPass->setVertexProgram(pass->getVertexProgramName());
-
-                if (mDepthPass->hasVertexProgram())
-                {
-                        const GpuProgramPtr& prg = mDepthPass->getVertexProgram();
-                        // Load this program if not done already
-                        if (!prg->isLoaded())
-                                prg->load();
-                        // Copy params
-                        mDepthPass->setVertexProgramParameters(pass->getVertexProgramParameters());
-                }
-        }
-        else if (mDepthPass->hasVertexProgram())
-        {
-                mDepthPass->setVertexProgram("");
-        }
-        
-
-        bool IsDepthWrite = usedPass->getDepthWriteEnabled();
-
-        // global option which enables / disables depth writes
-        if (!mEnableDepthWrite)
-        {
-                usedPass->setDepthWriteEnabled(false);
-        }
-        //else if (mIsItemBufferPass) {usedPass = mItemBufferPass;}
-        
-        Pass *result = SceneManager::setPass(usedPass);
-
-        // reset depth write
-        if (!mEnableDepthWrite)
-        {
-                usedPass->setDepthWriteEnabled(IsDepthWrite);
-        }
-
-        // reset illumination stage
-        mIlluminationStage = savedStage;
-
-        return result;
-}
-//-----------------------------------------------------------------------
-void OcclusionCullingSceneManager::_findVisibleObjects(Camera* cam,
-                                                                                                                bool onlyShadowCasters)
-{
-        //-- show visible scene nodes and octree bounding boxes from last frame
-        if (mShowVisualization)
-    {
-                PrepareVisualization(cam);
-        }
-        else 
-        {       
-                // for hierarchical culling, we interleave identification 
-                // and rendering of objects in _renderVisibibleObjects
-
-                // for the shadow pass we use only standard rendering
-                // because of low occlusion
-                if (mShadowTechnique == SHADOWTYPE_TEXTURE_MODULATIVE && 
-                        mIlluminationStage == IRS_RENDER_TO_TEXTURE)
-                {
-                        TerrainSceneManager::_findVisibleObjects(cam, onlyShadowCasters);
-                }
-                // only shadow casters will be rendered in shadow texture pass
-                // mHierarchyInterface->SetOnlyShadowCasters(onlyShadowCasters);
-        }
-        
-        
-        // -- delete lists stored for visualization
-        mVisible.clear();
-        mBoxes.clear();
-}
-//-----------------------------------------------------------------------
-void OcclusionCullingSceneManager::_renderVisibleObjects()
-{
-
-        InitDepthPass();          // create material for depth pass
-        InitItemBufferPass(); // create material for item buffer pass
-
-        // save ambient light to reset later
-        ColourValue savedAmbient = mAmbientLight;
-
-        //-- apply standard rendering for some modes (e.g., visualization, shadow pass)
-
-        if (mShowVisualization ||
-           (mShadowTechnique == SHADOWTYPE_TEXTURE_MODULATIVE && 
-            mIlluminationStage == IRS_RENDER_TO_TEXTURE))
-        {       
-                IlluminationRenderStage savedStage = mIlluminationStage; 
-        
-                if (mShowVisualization) 
-                        // disable illumination stage to prevent rendering shadows
-                        mIlluminationStage = IRS_NONE;
-
-                // standard rendering for shadow maps because of performance
-                TerrainSceneManager::_renderVisibleObjects();
-
-                mIlluminationStage = savedStage;
-        }
-        else //-- the hierarchical culling algorithm
-        {
-                // don't render backgrounds for item buffer
-                if (mUseItemBuffer)
-                {
-                        clearSpecialCaseRenderQueues();
-                        getRenderQueue()->clear();
-                }
-
-                //-- hierarchical culling
-                // the objects of different layers (e.g., background, scene, 
-                // overlay) must be identified and rendered one after another
-
-                //-- render all early skies
-                clearSpecialCaseRenderQueues();
-                addSpecialCaseRenderQueue(RENDER_QUEUE_BACKGROUND);
-                addSpecialCaseRenderQueue(RENDER_QUEUE_SKIES_EARLY);
-                setSpecialCaseRenderQueueMode(SceneManager::SCRQM_INCLUDE);
-
-                TerrainSceneManager::_renderVisibleObjects();
-
-#ifdef GTP_VISIBILITY_MODIFIED_OGRE
-                // delete previously rendered content
-                _deleteRenderedQueueGroups();
-#endif
-
-                //-- prepare queue for visible objects (i.e., all but overlay and skies late)
-                clearSpecialCaseRenderQueues();
-                addSpecialCaseRenderQueue(RENDER_QUEUE_SKIES_LATE);
-                addSpecialCaseRenderQueue(RENDER_QUEUE_OVERLAY);
-        
-                // exclude this queues from hierarchical rendering
-                setSpecialCaseRenderQueueMode(SceneManager::SCRQM_EXCLUDE);
-
-                // set all necessary parameters for 
-                // hierarchical visibility culling and rendering
-                InitVisibilityCulling(mCameraInProgress);
-
-        
-                /** 
-                * the hierarchical culling algorithm
-                * for depth pass: we just find objects and update depth buffer
-                * for "delayed" rendering: we render some passes afterwards
-                * e.g., transparents, because they need front-to-back sorting
-                **/
-                
-                mVisibilityManager->ApplyVisibilityCulling();
-
-                // delete remaining renderables from queue (all not in mLeavePassesInQueue)
-#ifdef GTP_VISIBILITY_MODIFIED_OGRE
-                _deleteRenderedQueueGroups(mLeavePassesInQueue);
-#endif
-
-                //-- reset parameters
-                mIsDepthPassPhase = false;
-                mIsItemBufferPhase = false;
-                mSkipTransparents = false;
-                mLeavePassesInQueue = 0;
-                
-
-                // add visible nodes found by the visibility culling algorithm
-                if (mUseDepthPass)
-                {
-                        for (NodeList::iterator it = mVisible.begin(); it != mVisible.end(); ++ it)
-                        {
-                                (*it)->_addToRenderQueue(mCameraInProgress, getRenderQueue(), false);
-                        }
-                }
-                
-                //-- now we can render all remaining queue objects
-                // used for depth pass, transparents, overlay 
-                clearSpecialCaseRenderQueues();
-
-                TerrainSceneManager::_renderVisibleObjects();
-        }
-                
-        // HACK: set the new render level index, important to avoid cracks
-        // in terrain caused by LOD
-        TerrainRenderable::NextRenderLevelIndex();
-        
-        // reset ambient light
-        setAmbientLight(savedAmbient);
-
-        getRenderQueue()->clear(); // finally clear render queue
-        OGRE_DELETE(mRenderQueue); // HACK: should be cleared before ...
-        WriteLog(); // write out stats
-
-}
-
-//-----------------------------------------------------------------------
-void OcclusionCullingSceneManager::_updateSceneGraph(Camera* cam)
-{
-        mVisibilityManager->GetCullingManager()->SetHierarchyInterface(mHierarchyInterface);
-        mHierarchyInterface->SetRenderSystem(mDestRenderSystem);
-
-        TerrainSceneManager::_updateSceneGraph(cam);
-}
-//-----------------------------------------------------------------------
-bool OcclusionCullingSceneManager::setOption(const String & key, const void * val)
-{
-        if (key == "UseDepthPass")
-        {
-                mUseDepthPass = (*static_cast<const bool *>(val));
-                return true;
-        }
-        if (key == "PrepareVisualization")
-        {
-                mShowVisualization = (*static_cast<const bool *>(val));
-                return true;
-        }
-        if (key == "RenderNodesForViz")
-        {
-                mRenderNodesForViz = (*static_cast<const bool *>(val));
-                return true;
-        }
-        if (key == "RenderNodesContentForViz")
-        {
-                mRenderNodesContentForViz = (*static_cast<const bool *>(val));
-                return true;
-        }
-        if (key == "SkyBoxEnabled")
-        {
-                mSkyBoxEnabled = (*static_cast<const bool *>(val));
-                return true;
-        }
-        if (key == "SkyPlaneEnabled")
-        {
-                mSkyPlaneEnabled = (*static_cast<const bool *>(val));
-                return true;
-        }
-        if (key == "SkyDomeEnabled")
-        {
-                mSkyDomeEnabled = (*static_cast<const bool *>(val));
-                return true;
-        }
-        if (key == "VisualizeCulledNodes")
-        {
-                mVisualizeCulledNodes = (*static_cast<const bool *>(val));
-                return true;
-        }
-        if (key == "DelayRenderTransparents")
-        {
-                mDelayRenderTransparents = (*static_cast<const bool *>(val));
-                return true;
-        }
-
-        if (key == "DepthWrite")
-        {
-                mEnableDepthWrite = (*static_cast<const bool *>(val));
-                return true;
-        }
-        if (key == "UseItemBuffer")
-        {
-                mUseItemBuffer = (*static_cast<const bool *>(val));
-                return true;
-        }
-        if (key == "ExecuteVertexProgramForAllPasses")
-        { 
-                mExecuteVertexProgramForAllPasses  = (*static_cast<const bool *>(val));
-                return true;
-        }
-        if (key == "RenderTransparentsForItemBuffer")
-        { 
-                mRenderTransparentsForItemBuffer  = (*static_cast<const bool *>(val));
-                return true;
-        }
-        if (key == "NodeVizScale")
-        { 
-                OctreeNode::setVizScale(*static_cast<const float *>(val));
-                return true;
-        }
-
-        if (key == "UseArbQueries")
-        {
-                bool useArbQueries = (*static_cast<const bool *>(val));
-
-                if (useArbQueries)
-                {
-                        mHierarchyInterface->DeleteQueries();
-                        mDestRenderSystem->setConfigOption("ArbQueries", "Yes");
-                }
-                else
-                {
-                        mHierarchyInterface->DeleteQueries();
-                        mDestRenderSystem->setConfigOption("ArbQueries", "No");
-                }
-        }
-        return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
-                setOption(key, val) || TerrainSceneManager::setOption(key, val);
-}
-//-----------------------------------------------------------------------
-bool OcclusionCullingSceneManager::getOption(const String & key, void *val)
-{
-        if (key == "NumHierarchyNodes")
-        {
-                * static_cast<unsigned int *>(val) = (unsigned int)mNumOctants;
-                return true;
-        }
-        
-        return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
-                getOption(key, val) && TerrainSceneManager::getOption(key, val);
-}
-//-----------------------------------------------------------------------
-bool OcclusionCullingSceneManager::getOptionValues(const String & key, 
-                                                                                                        StringVector &refValueList)
-{
-        return TerrainSceneManager::getOptionValues( key, refValueList);
-}
-//-----------------------------------------------------------------------
-bool OcclusionCullingSceneManager::getOptionKeys(StringVector & refKeys)
-{
-        return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
-                getOptionKeys(refKeys) || TerrainSceneManager::getOptionKeys(refKeys);
-}
-//-----------------------------------------------------------------------
-void OcclusionCullingSceneManager::setVisibilityManager(GtpVisibility::
-                                                                                                                 VisibilityManager *visManager)
-{
-        mVisibilityManager = visManager;
-}
-//-----------------------------------------------------------------------
-GtpVisibility::VisibilityManager *OcclusionCullingSceneManager::getVisibilityManager( void )
-{
-        return mVisibilityManager;
-}
-//-----------------------------------------------------------------------
-void OcclusionCullingSceneManager::WriteLog()
-{
-        std::stringstream d;
-
-        d << "Depth pass: " << StringConverter::toString(mUseDepthPass) << ", "
-          << "Delay transparents: " << StringConverter::toString(mDelayRenderTransparents) << ", "
-          << "Use optimization: " << StringConverter::toString(mHierarchyInterface->GetTestGeometryForVisibleLeaves()) << ", "
-          << "Algorithm type: " << mVisibilityManager->GetCullingManagerType() << ", "
-          << "Hierarchy nodes: " << mNumOctants << ", " 
-          << "Traversed nodes: " << mHierarchyInterface->GetNumTraversedNodes() << ", "
-          << "Rendered nodes: " << mHierarchyInterface->GetNumRenderedNodes() << ", "
-          << "Query culled nodes: " << mVisibilityManager->GetCullingManager()->GetNumQueryCulledNodes() << ", "
-          << "Frustum culled nodes: " << mVisibilityManager->GetCullingManager()->GetNumFrustumCulledNodes() << ", "
-      << "Queries issued: " << mVisibilityManager->GetCullingManager()->GetNumQueriesIssued() << "\n";
-
-        LogManager::getSingleton().logMessage(d.str());
-}
-//-----------------------------------------------------------------------
-void OcclusionCullingSceneManager::renderObjects(
-        const RenderPriorityGroup::TransparentRenderablePassList& objs, 
-    bool doLightIteration, const LightList* manualLightList)
-{
-        // for correct rendering, transparents must be rendered after hierarchical culling
-        if (!mSkipTransparents)
-        {
-                OctreeSceneManager::renderObjects(objs, doLightIteration, manualLightList);
-        }
-}
-//-----------------------------------------------------------------------
-bool OcclusionCullingSceneManager::validatePassForRendering(Pass* pass)
-{
-        // skip all but first pass if we are doing the depth pass
-        if ((mIsDepthPassPhase || mIsItemBufferPhase) && pass->getIndex() > 0)
-        {
-                return false;
-        }
-
-        return SceneManager::validatePassForRendering(pass);
-}
-//-----------------------------------------------------------------------
-void OcclusionCullingSceneManager::renderQueueGroupObjects(RenderQueueGroup* pGroup)
-{
-        if (!mIsItemBufferPhase)
-        {
-                TerrainSceneManager::renderQueueGroupObjects(pGroup);
-                return;
-        }
-
-        //-- item buffer
-
-    // Iterate through priorities
-    RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
-
-        while (groupIt.hasMoreElements())
-    {
-                RenderItemBuffer(groupIt.getNext());
-        }
-}
-//-----------------------------------------------------------------------
-void OcclusionCullingSceneManager::RenderItemBuffer(RenderPriorityGroup* pGroup)
-{
-        // Do solids
-        RenderPriorityGroup::SolidRenderablePassMap solidObjs = pGroup->_getSolidPasses();
-
-        // ----- SOLIDS LOOP -----
-        RenderPriorityGroup::SolidRenderablePassMap::const_iterator ipass, ipassend;
-        ipassend = solidObjs.end();
-
-        for (ipass = solidObjs.begin(); ipass != ipassend; ++ipass)
-        {
-                // Fast bypass if this group is now empty
-                if (ipass->second->empty()) 
-                        continue;
-
-                // Render only first pass
-                if (ipass->first->getIndex() > 0)
-                        continue;
-
-                RenderPriorityGroup::RenderableList* rendList = ipass->second;
-                
-                RenderPriorityGroup::RenderableList::const_iterator irend, irendend;
-                irendend = rendList->end();
-                        
-                for (irend = rendList->begin(); irend != irendend; ++irend)
-                {
-                        //std::stringstream d; d << "itembuffer, pass name: " << 
-                        //      ipass->first->getParent()->getParent()->getName();
-                        //      LogManager::getSingleton().logMessage(d.str());
-                        
-                        RenderSingleObjectForItemBuffer(*irend, ipass->first);
-                }
-        }
-
-        // -- TRANSPARENT LOOP: must be handled differently 
-
-        // transparents are treated either as solids or completely discarded
-        if (mRenderTransparentsForItemBuffer)
-        {
-                RenderPriorityGroup::TransparentRenderablePassList transpObjs = 
-                        pGroup->_getTransparentPasses();
-                RenderPriorityGroup::TransparentRenderablePassList::const_iterator 
-                        itrans, itransend;
-
-                itransend = transpObjs.end();
-                for (itrans = transpObjs.begin(); itrans != itransend; ++itrans)
-                {
-                        // like for solids, render only first pass
-                        if (itrans->pass->getIndex() == 0)
-                        {       
-                                RenderSingleObjectForItemBuffer(itrans->renderable, itrans->pass);
-                        }
-                }
-        }
-}
-//-----------------------------------------------------------------------
-void OcclusionCullingSceneManager::RenderSingleObjectForItemBuffer(Renderable *rend, Pass *pass)
-{
-        static LightList nullLightList;
-        
-        int col[4];
-        
-        // -- create color code out of object id
-        col[0] = (rend->getId() >> 16) & 255;
-        col[1] = (rend->getId() >> 8) & 255;
-        col[2] = rend->getId() & 255;
-//      col[3] = 255;
-
-        //mDestRenderSystem->setColour(col[0], col[1], col[2], col[3]);
-    
-        mItemBufferPass->setAmbient(ColourValue(col[0] / 255.0f,
-                                                                                    col[1] / 255.0f, 
-                                                                                        col[2] / 255.0f, 1));
-
-        // set vertex program of current pass
-        if (mExecuteVertexProgramForAllPasses && pass->hasVertexProgram())
-        {
-                mItemBufferPass->setVertexProgram(pass->getVertexProgramName());
-
-                if (mItemBufferPass->hasVertexProgram())
-                {
-                        const GpuProgramPtr& prg = mItemBufferPass->getVertexProgram();
-                        // Load this program if not done already
-                        if (!prg->isLoaded())
-                                prg->load();
-                        // Copy params
-                        mItemBufferPass->setVertexProgramParameters(pass->getVertexProgramParameters());
-                }
-        }
-        else if (mItemBufferPass->hasVertexProgram())
-        {
-                mItemBufferPass->setVertexProgram("");
-        }
-
-        Pass *usedPass = setPass(mItemBufferPass); 
-
-
-        // Render a single object, this will set up auto params if required
-        renderSingleObject(rend, usedPass, false, &nullLightList);
-}
-//-----------------------------------------------------------------------
-GtpVisibility::VisibilityManager *OcclusionCullingSceneManager::GetVisibilityManager()
-{
-        return mVisibilityManager;
-}
-//-----------------------------------------------------------------------
-void OcclusionCullingSceneManager::InitVisibilityCulling(Camera *cam)
-{
-        // reset culling manager stats
-        mVisibilityManager->GetCullingManager()->InitFrame(mVisualizeCulledNodes);
-
-        // set depth pass flag before rendering
-        mIsDepthPassPhase = mUseDepthPass;
-
-        // item buffer needs full ambient lighting to use item colors as unique id
-        if (mUseItemBuffer) 
-        {
-                mIsItemBufferPhase = true;
-                setAmbientLight(ColourValue(1,1,1,1));
-        }
-
-
-        // set passes which are stored in render queue 
-        // for rendering AFTER hierarchical culling, i.e., passes which need 
-        // a special rendering order
-        mLeavePassesInQueue = 0;
-
-        // if we have the depth pass or use an item buffer, no passes are left in the queue
-        if (0 && !mUseDepthPass && !mUseItemBuffer)
-        {
-                if (mShadowTechnique == SHADOWTYPE_STENCIL_ADDITIVE)
-                {
-                        // TODO: remove this pass because it should be processed during hierarchical culling
-                        //mLeavePassesInQueue |= RenderPriorityGroup::SOLID_PASSES_NOSHADOW;
-
-                        mLeavePassesInQueue |= RenderPriorityGroup::SOLID_PASSES_DECAL;
-                        mLeavePassesInQueue |= RenderPriorityGroup::SOLID_PASSES_DIFFUSE_SPECULAR;
-                        mLeavePassesInQueue |= RenderPriorityGroup::TRANSPARENT_PASSES;
-
-                        // just render ambient stuff
-                        mIlluminationStage = IRS_AMBIENT;
-                }
-        
-                if (mShadowTechnique == SHADOWTYPE_STENCIL_MODULATIVE)
-                {
-                        mLeavePassesInQueue |= RenderPriorityGroup::SOLID_PASSES_NOSHADOW;
-                        mLeavePassesInQueue |= RenderPriorityGroup::TRANSPARENT_PASSES;
-                }
-        
-                // transparents should be rendered after hierarchical culling to 
-                // provide front-to-back ordering
-                if (mDelayRenderTransparents)
-                {
-                        mLeavePassesInQueue |= RenderPriorityGroup::TRANSPARENT_PASSES;
-                }
-        }
-
-        // skip rendering transparents in the hierarchical culling
-        // (because they will be rendered afterwards)
-        mSkipTransparents = mUseDepthPass || 
-                (mLeavePassesInQueue & RenderPriorityGroup::TRANSPARENT_PASSES);
-
-        // -- initialise interface for rendering traversal of the hierarchy
-        mHierarchyInterface->SetHierarchyRoot(mOctree);
-        
-        // possible two cameras (one for culling, one for rendering)
-        mHierarchyInterface->InitTraversal(mCameraInProgress, 
-                                                                           mCullCamera ? getCamera("CullCamera") : NULL,
-                                                                           mLeavePassesInQueue);
-                
-}
-//-----------------------------------------------------------------------
-OctreeHierarchyInterface *OcclusionCullingSceneManager::GetHierarchyInterface()
-{
-        return mHierarchyInterface;
-}
-//-----------------------------------------------------------------------
-void OcclusionCullingSceneManager::endFrame()
-{
-        TerrainRenderable::ResetRenderLevelIndex();
-}
-//-----------------------------------------------------------------------
-Entity* OcclusionCullingSceneManager::createEntity(const String& entityName, 
-                                                                                                        const String& meshName)
-{
-        Entity *ent = SceneManager::createEntity(entityName, meshName);
-
-        for (int i = 0; i < (int)ent->getNumSubEntities(); ++i)
-        {
-                ent->getSubEntity(i)->setId(mCurrentEntityId);
-        }
-
-        // increase counter of entity id values
-        ++ mCurrentEntityId;
-
-        return ent;
-}
-//-----------------------------------------------------------------------
-void OcclusionCullingSceneManager::renderAdditiveStencilShadowedQueueGroupObjects(RenderQueueGroup* pGroup)
-{
-        // only render solid passes during hierarchical culling
-        if (mIsHierarchicalCulling)
-        {
-                RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
-            LightList lightList;
-
-                while (groupIt.hasMoreElements())
-                {
-                        RenderPriorityGroup* pPriorityGrp = groupIt.getNext();
-
-                        // Sort the queue first
-                        pPriorityGrp->sort(mCameraInProgress);
-
-                        // Clear light list
-                        lightList.clear();
-
-                        // Render all the ambient passes first, no light iteration, no lights
-                        mIlluminationStage = IRS_AMBIENT;
-
-                        OctreeSceneManager::renderObjects(pPriorityGrp->_getSolidPasses(), false, &lightList);
-                        // Also render any objects which have receive shadows disabled
-                        OctreeSceneManager::renderObjects(pPriorityGrp->_getSolidPassesNoShadow(), true);
-                }
-        }
-        else
-        {
-                OctreeSceneManager::renderAdditiveStencilShadowedQueueGroupObjects(pGroup);
-        }
-}
-//-----------------------------------------------------------------------
-void OcclusionCullingSceneManager::renderModulativeStencilShadowedQueueGroupObjects(RenderQueueGroup* pGroup)
-{
-   if (mIsHierarchicalCulling)
-   {
-           // Iterate through priorities
-           RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
-
-           while (groupIt.hasMoreElements())
-           {
-                   RenderPriorityGroup* pPriorityGrp = groupIt.getNext();
-
-                   // Sort the queue first
-                   pPriorityGrp->sort(mCameraInProgress);
-
-                   // Do (shadowable) solids
-                   OctreeSceneManager::renderObjects(pPriorityGrp->_getSolidPasses(), true);
-           }
-   }
-   else
-   {
-           SceneManager::renderModulativeStencilShadowedQueueGroupObjects(pGroup);
-   }
-}
-
-
+}
+
+//-------------------------------------------------------------------------
 MovableObject *OcclusionCullingSceneManager::FindCorrespondingObject(const AxisAlignedBox &box)
 {
@@ -861 +927 @@
                          const AxisAlignedBox bbox = mo->getWorldBoundingBox();
                          
-                         const float overlap = GtpVisibilityPreprocessor::FactorOfOverlap(
+                         const float overlap = GtpVisibilityPreprocessor::RatioOfOverlap(
                                  OgreTypeConverter::ConvertFromOgre(bbox), 
                                  OgreTypeConverter::ConvertFromOgre(box));
@@ -869 +935 @@
                                  bestFit = overlap;
                                  bestFittingObj = mo;
-
+                                        
                                  // perfect fit => object found
                                  if (overlap > (1.0 - GtpVisibilityPreprocessor::Limits::Small))
@@ -886 +952 @@
         // identify the corresponding Ogre meshes using the bounding boxes
         IdentifyObjects(objects);
-
+        
         // load the view cells assigning the found objects to the pvss
         mViewCellsManager->LoadViewCells(filename, &objects);
@@ -908 +974 @@
                   
                   MovableObject *mo = FindCorrespondingObject(currentBox);
-
                   //objects.push_back(mi);
         }