FGFS-4.1/OpenSceneGraph
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Improves to CullStack.

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From M.Grngr. options support for f=switching off internal imagery in .ive files
This commit is contained in:
Robert Osfield
2003-09-26 11:20:43 +00:00
parent 7fb9f6be4b
commit f8df9991b2
7 changed files with 205 additions and 67 deletions
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51
src/osg/CullStack.cpp
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@@ -25,6 +25,9 @@ CullStack::CullStack()
_bbCornerFar = 7;
_currentReuseMatrixIndex=0;
_identity = new RefMatrix();
_index_modelviewCullingStack = 0;
_back_modelviewCullingStack = 0;
}
@@ -33,7 +36,6 @@ CullStack::~CullStack()
reset();
}
void CullStack::reset()
{
@@ -48,8 +50,11 @@ void CullStack::reset()
_clipspaceCullingStack.clear();
_projectionCullingStack.clear();
_modelviewCullingStack.clear();
//_modelviewCullingStack.clear();
_index_modelviewCullingStack=0;
_back_modelviewCullingStack = 0;
osg::Vec3 lookVector(0.0,0.0,-1.0);
_bbCornerFar = (lookVector.x()>=0?1:0) |
@@ -59,14 +64,17 @@ void CullStack::reset()
_bbCornerNear = (~_bbCornerFar)&7;
}
void CullStack::pushCullingSet()
{
_MVPW_Stack.push_back(0L);
if (_modelviewStack.empty())
{
_modelviewCullingStack.push_back(_projectionCullingStack.back());
if (_index_modelviewCullingStack==0)
{
if (_modelviewCullingStack.empty())
_modelviewCullingStack.push_back(CullingSet());
_modelviewCullingStack[_index_modelviewCullingStack++].set(_projectionCullingStack.back());
}
else
{
@@ -104,11 +112,19 @@ void CullStack::pushCullingSet()
float scaleRatio = 0.701f/sqrtf(scale_00.length2()+scale_10.length2());
pixelSizeVector *= scaleRatio;
_modelviewCullingStack.push_back(new osg::CullingSet(*_projectionCullingStack.back(),*_modelviewStack.back(),pixelSizeVector));
if (_index_modelviewCullingStack>=_modelviewCullingStack.size())
{
_modelviewCullingStack.push_back(CullingSet());
}
_modelviewCullingStack[_index_modelviewCullingStack++].set(_projectionCullingStack.back(),*_modelviewStack.back(),pixelSizeVector);
}
_back_modelviewCullingStack = &_modelviewCullingStack[_index_modelviewCullingStack-1];
// const osg::Polytope& polytope = _modelviewCullingStack.back()->getFrustum();
// const osg::Polytope::PlaneList& pl = polytope.getPlaneList();
// std::cout <<"new cull stack"<<std::endl;
@@ -119,13 +135,16 @@ void CullStack::pushCullingSet()
// std::cout << " plane "<<*pl_itr<<std::endl;
// }
}
void CullStack::popCullingSet()
{
_MVPW_Stack.pop_back();
_modelviewCullingStack.pop_back();
--_index_modelviewCullingStack;
if (_index_modelviewCullingStack>0) _back_modelviewCullingStack = &_modelviewCullingStack[_index_modelviewCullingStack-1];
}
void CullStack::pushViewport(osg::Viewport* viewport)
@@ -144,17 +163,18 @@ void CullStack::pushProjectionMatrix(RefMatrix* matrix)
{
_projectionStack.push_back(matrix);
osg::CullingSet* cullingSet = new osg::CullingSet();
_projectionCullingStack.push_back(osg::CullingSet());
osg::CullingSet& cullingSet = _projectionCullingStack.back();
// set up view frustum.
cullingSet->getFrustum().setToUnitFrustum(((_cullingMode&NEAR_PLANE_CULLING)!=0),((_cullingMode&FAR_PLANE_CULLING)!=0));
cullingSet->getFrustum().transformProvidingInverse(*matrix);
cullingSet.getFrustum().setToUnitFrustum(((_cullingMode&NEAR_PLANE_CULLING)!=0),((_cullingMode&FAR_PLANE_CULLING)!=0));
cullingSet.getFrustum().transformProvidingInverse(*matrix);
// set the culling mask ( There should be a more elegant way!) Nikolaus H.
cullingSet->setCullingMask(_cullingMode);
cullingSet.setCullingMask(_cullingMode);
// set the small feature culling.
cullingSet->setSmallFeatureCullingPixelSize(_smallFeatureCullingPixelSize);
cullingSet.setSmallFeatureCullingPixelSize(_smallFeatureCullingPixelSize);
// set up the relevant occluders which a related to this projection.
for(ShadowVolumeOccluderList::iterator itr=_occluderList.begin();
@@ -165,12 +185,11 @@ void CullStack::pushProjectionMatrix(RefMatrix* matrix)
if (itr->matchProjectionMatrix(*matrix))
{
//std::cout << " ** activating occluder"<<std::endl;
cullingSet->addOccluder(*itr);
cullingSet.addOccluder(*itr);
}
}
_projectionCullingStack.push_back(cullingSet);
// need to recompute frustum volume.
_frustumVolume = -1.0f;