Changeset 1911 for GTP/trunk/Lib/Vis/Preprocessing/src/HierarchyManager.cpp

Timestamp:

12/19/06 11:09:01 (18 years ago)

Author:

mattausch

Message:

added support for pvs correction (warning: does not yet compile)

File:

• GTP/trunk/Lib/Vis/Preprocessing/src/HierarchyManager.cpp (modified) (2 diffs)

GTP/trunk/Lib/Vis/Preprocessing/src/HierarchyManager.cpp

@@ -734 +734 @@
 
 
+float HierarchyManager::EvalPvsCorrectionFactor(const float childPvs, 
+                                                                                                const float totalPvs, 
+                                                                                                const float avgRayContri) const
+{
+        if (!childPvs ||
+                // assume pvs sampled sufficiently => take child pvs
+                (avgRayContri < mMinAvgRayContri))
+                return 1.0f;
+
+        // assume pvs not sampled sufficiently => take total pvs
+        if (avgRayContri > mMaxAvgRayContri)
+                return totalPvs / childPvs;
+
+        const float factor = 
+                        (mMaxAvgRayContri - avgRayContri) / 
+                        (mMaxAvgRayContri - mMinAvgRayContri);
+
+        const float newPvs = factor * childPvs + (1.0f - factor) * totalPvs;    
+        
+        return newPvs / childPvs;
+}
+
+
 bool HierarchyManager::ApplySubdivisionCandidate(SubdivisionCandidate *sc, 
                                                                                                  SplitQueue &splitQueue,
@@ -780 +803 @@
         // high avg ray contri, the result is influenced by undersampling
         // => decrease priority
-        if (USE_AVGRAYCONTRI && (sc->GetAvgRayContribution() > mMaxAvgRayContri))
+        if (0 && USE_AVGRAYCONTRI && (sc->GetAvgRayContribution() > mMaxAvgRayContri))
         {
                 const float factor = 1.0f + sc->GetAvgRayContribution() - mMaxAvgRayContri;