FGFS-4.1/OpenSceneGraph
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Updates to shadow occlusion culling code.

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This commit is contained in:
Robert Osfield
2002-06-03 17:49:28 +00:00
parent 3f84849210
commit db78726acf
5 changed files with 208 additions and 10 deletions
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30
src/osgUtil/CullVisitor.cpp
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@@ -166,7 +166,7 @@ void CullVisitor::reset()
_windowToModelFactor = 1.0f;
}
void CullVisitor::pushPolytope()
void CullVisitor::pushCullingSet()
{
_modelviewPolytopeStack.push_back();
osg::Polytope& cv = _modelviewPolytopeStack.back();
@@ -177,14 +177,20 @@ void CullVisitor::pushPolytope()
_MVPW_Stack.push_back(0L);
_windowToModelFactorDirty = true;
_modelviewCullingStack.push_back(osgNew osg::CullingSet(*_projectionCullingStack.back(),*_modelviewStack.back()));
}
void CullVisitor::popPolytope()
void CullVisitor::popCullingSet()
{
_modelviewPolytopeStack.pop_back();
_MVPW_Stack.pop_back();
_windowToModelFactorDirty = true;
_modelviewCullingStack.pop_back();
}
void CullVisitor::pushViewport(osg::Viewport* viewport)
@@ -207,7 +213,17 @@ void CullVisitor::pushProjectionMatrix(Matrix* matrix)
_projectionPolytopeStack.back().setToUnitFrustumWithoutNearFar();
_projectionPolytopeStack.back().transformProvidingInverse(*matrix);
pushPolytope();
osg::CullingSet* cullingSet = osgNew osg::CullingSet();
cullingSet->getFrustum().setToUnitFrustumWithoutNearFar();
cullingSet->getFrustum().transformProvidingInverse(*matrix);
_projectionCullingStack.push_back(cullingSet);
//_projectionCullingStack.push_back(osgNew osg::CullingSet(*_clipspaceCullingStack.back(),*matrix));
pushCullingSet();
}
void CullVisitor::popProjectionMatrix()
@@ -241,14 +257,16 @@ void CullVisitor::popProjectionMatrix()
_projectionStack.pop_back();
_projectionPolytopeStack.pop_back();
popPolytope();
_projectionCullingStack.pop_back();
popCullingSet();
}
void CullVisitor::pushModelViewMatrix(Matrix* matrix)
{
_modelviewStack.push_back(matrix);
pushPolytope();
pushCullingSet();
// fast method for computing the eye point in local coords which doesn't require the inverse matrix.
const float x_0 = (*matrix)(0,0);
@@ -285,7 +303,7 @@ void CullVisitor::popModelViewMatrix()
{
_modelviewStack.pop_back();
_eyePointStack.pop_back();
popPolytope();
popCullingSet();
osg::Vec3 lookVector(0.0f,0.0f,-1.0f);