Changeset 371 for branches/Dirk_RenderTraversalWork/Source/System/Action/RenderTraversal/OSGOcclusionCullingTreeBuilder.cpp

Timestamp:

10/31/06 15:07:34 (2 years ago)

Author:

dshipton

Message:

Can set a minimum triangle count before a test query is issued.
within testOcclusionCulling this knob is T/t (increase/decrease)

Files:

• branches/Dirk_RenderTraversalWork/Source/System/Action/RenderTraversal/OSGOcclusionCullingTreeBuilder.cpp (modified) (6 diffs)

branches/Dirk_RenderTraversalWork/Source/System/Action/RenderTraversal/OSGOcclusionCullingTreeBuilder.cpp

@@ -259 +259 @@
-    if(_rt->getOcclusionCullingQueryBufferSize() != _numTestSamples || !_isOccSetup)
-    {
-#if 0
-        if( _testSamples )
-        {
-            std::cout << "deleting" << std::endl;
-            delete [] _testSamples;
-            // Should probably delete queries too....
-        }
-#endif
-        _numTestSamples = _rt->getOcclusionCullingQueryBufferSize();
-        //std::cout << "Buf size: " << _numTestSamples << std::endl;
@@ -317 +309 @@
-    _visPixelThreshold = _rt->getOcclusionCullingVisibilityThreshold();
-    _coveredProbThreshold = _rt->getOcclusionCullingCoveredThreshold();
+    _minTriangleCount = _rt->getOcclusionCullingMinimumTriangleCount();
-    _inTesting = false;
-    
@@ -421 +414 @@
-        min[0] = osgClamp(-1.f, min[0], 1.f);
-        min[1] = osgClamp(-1.f, min[1], 1.f);
-        //std::cout << min << std::endl;
-        //std::cout << max << std::endl;
-        //v.transform(worldToCam);
-        
-        //Real32 pix = (max[0] - min[0]) * (max[1] - min[1]) * ((pix_width/2.0f)*(pix_height/2.0f));
-        //Real32 cbb = pix / (pix_width * pix_height);
-        
-        // cbb is the percent of the screen real estate this would cover
@@ -435 +422 @@
-
-//Make decision
-
-        
-        if(pNode->hasFunctor() == false) //Nothing to do
@@ -461 +447 @@
-                if(pcov > _coveredProbThreshold || cbb < 0.001) // If within threshold or reall small
-                {
+                    //Get triangles
+                    GeoStatsAttachmentPtr st =
+                            GeoStatsAttachment::get(pNode->getNode());
+                    st->validate();
+                    UInt32 triangles = st->getTriangles();
+
-                    if(cbb * _vpWidth * _vpHeight < _minFeatureSize) //small feature culling
-                    {                
-                        StatCollector *sc = _rt->getStatistics();
-                        GeoStatsAttachmentPtr st =
-                                GeoStatsAttachment::get(pNode->getNode());
-                        st->validate();
-                        _rt->getStatistics()->getElem(statNOccTriangles)->
-st->getTriangles()
+triangles
-                        if(_rt->getOcclusionCullingDebug() && pNode->getNode())
-                        {
@@ -478 +467 @@
-                        pNode->setIsRendered(true);
-                    }
-
+
+
+
+
+
-                    {
-                        drawTestResults(denv, part);