Changeset 2772 for GTP/trunk/App/Demos/Vis/CHC_revisited/CHCPlusPlusTraverser.cpp

Timestamp:

06/18/08 18:02:05 (16 years ago)

Author:

mattausch

Message:

added randomization of the first invokation

File:

• GTP/trunk/App/Demos/Vis/CHC_revisited/CHCPlusPlusTraverser.cpp (modified) (6 diffs)

GTP/trunk/App/Demos/Vis/CHC_revisited/CHCPlusPlusTraverser.cpp

@@ -10 +10 @@
 CHCPlusPlusTraverser::CHCPlusPlusTraverser()
 {
+}
+
+
+void CHCPlusPlusTraverser::HandleQueryResult(OcclusionQuery *query)
+{
+        // wait until result available
+        int visiblePixels = query->GetQueryResult();
+
+        int visible = visiblePixels > mVisibilityThreshold;
+
+        BvhNode *node = query->GetFrontNode();
+
+        if (visible)
+        {
+                // node was previously invisible
+                if (!node->IsVisible())
+                        node->SetAssumedVisibleFrameId(mFrameId + mAssumedVisibleFrames);
+                else
+                        // randomize first invokation
+                        node->SetAssumedVisibleFrameId(mFrameId + Random(mAssumedVisibleFrames + 1));
+
+                mBvh->MakeParentsVisible(node);
+                TraverseNode(node);
+        }
+        else
+        {
+                ++ mStats.mNumQueryCulledNodes;
+        }
+
+        node->SetVisible(visible);
 }
 
@@ -35 +65 @@
                         mQueryQueue.pop();
 
-                        // wait until result available
-                        int visiblePixels = query->GetQueryResult();
-
-                        if (visiblePixels > mVisibilityThreshold)
-                        {
-                                BvhNode *node = query->GetFrontNode();
-
-                                node->SetVisible(true);
-                                mBvh->MakeParentsVisible(node);
-                                TraverseNode(node);
-                        }
-                        else
-                        {
-                                ++ mStats.mNumQueryCulledNodes;
-                        }
+                        HandleQueryResult(query);
                 }       
 
@@ -78 +94 @@
                                         // identify nodes that we cannot skip queries for
                                         const bool testFeasible = (!wasVisible || (node->IsVirtualLeaf() && (node->GetAssumedVisibleFrameId() <= mFrameId)));
-                                                 
 
                                         // update node's visited flag
@@ -86 +101 @@
                                         if (testFeasible)
                                         {
-                                                // reset node's visibility classification 
-                                                node->SetVisible(false);
-
                                                 if (!wasVisible)
                                                 {
@@ -129 +141 @@
         }
 
+
         //////////////
         //-- issue remaining previously visible node queries
@@ -146 +159 @@
                 mQueryQueue.pop();
 
-                // wait until result available
-                int visiblePixels = query->GetQueryResult();
-
-                if (visiblePixels > mVisibilityThreshold)
-                {
-                        BvhNode *node = query->GetFrontNode();
-
-                        node->SetVisible(true);
-                        mBvh->MakeParentsVisible(node);
-                }
-                else
-                {
-                        ++ mStats.mNumQueryCulledNodes;
-                }
+                HandleQueryResult(query);
         }
 }