source: trunk/VUT/GtpVisibility/src/StopAndWaitCullingManager.cpp @ 59

#include "StopAndWaitCullingManager.h"

namespace GtpVisibility {

//-----------------------------------------------------------------------
StopAndWaitCullingManager::StopAndWaitCullingManager(HierarchyInterface *HierarchyInterface):
CullingManager(HierarchyInterface)
{
}
//-----------------------------------------------------------------------
void StopAndWaitCullingManager::RenderScene()
{
        mNumFrustumCulledNodes = mNumQueryCulledNodes = 0;

        while (!mHierarchyInterface->GetQueue()->empty())
        {
                HierarchyNode *node = mHierarchyInterface->GetQueue()->top();
                mHierarchyInterface->GetQueue()->pop();
                
                // interesting for visualization purpose
                mHierarchyInterface->SetNodeVisible(node, false);
                mHierarchyInterface->SetLastVisited(node, mHierarchyInterface->GetFrameId());

                bool intersects = false;

                if (mHierarchyInterface->CheckFrustumVisible(node, intersects))
                {
                        mNumFrustumCulledNodes ++;
                        continue;
                }
                
                //if intersects near plane => skip occlusion query because wrong results possible
                if (intersects)
                {
            mHierarchyInterface->SetNodeVisible(node, true);
                        mHierarchyInterface->TraverseNode(node);
                        continue;
                }

                // node visible
                if (mHierarchyInterface->IssueOcclusionQuery(node)->GetQueryResult() > 
                        mVisibilityThreshold)
                {
                        mHierarchyInterface->TraverseNode(node);
                }
                else
                {
                        mNumQueryCulledNodes ++;
                }
        }
}
} // namespace GtpVisibility