FGFS-4.1/OpenSceneGraph
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To fix problems in tight bound computation of the shadow map made the ComputeLightSpaceBounds usage always used when the

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CastShadowMask is active.  Changed the ComputeLightSpaceBounds to use just VIEW_FRUSTUM_CULLING.
This commit is contained in:
Robert Osfield 2011-11-25 12:48:03 +00:00
parent 2b2c1b5671
commit 16c2bb5a2f
1 changed files with 32 additions and 13 deletions
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41
src/osgShadow/ViewDependentShadowMap.cpp
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@ -254,6 +254,8 @@ public:
ComputeLightSpaceBounds(osg::Viewport* viewport, const osg::Matrixd& projectionMatrix, osg::Matrixd& viewMatrix):
osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ACTIVE_CHILDREN)
{
setCullingMode(osg::CullSettings::VIEW_FRUSTUM_CULLING);
pushViewport(viewport);
pushProjectionMatrix(new osg::RefMatrix(projectionMatrix));
pushModelViewMatrix(new osg::RefMatrix(viewMatrix),osg::Transform::ABSOLUTE_RF);
@ -263,13 +265,22 @@ public:
{
if (isCulled(node)) return;
// push the culling mode.
pushCurrentMask();
traverse(node);
// pop the culling mode.
popCurrentMask();
}
void apply(osg::Geode& node)
{
if (isCulled(node)) return;
// push the culling mode.
pushCurrentMask();
for(unsigned int i=0; i<node.getNumDrawables();++i)
{
if (node.getDrawable(i))
@ -277,6 +288,9 @@ public:
updateBound(node.getDrawable(i)->getBound());
}
}
// pop the culling mode.
popCurrentMask();
}
void apply(osg::Billboard&)
@ -295,16 +309,24 @@ public:
{
if (isCulled(transform)) return;
// push the culling mode.
pushCurrentMask();
// absolute transforms won't affect a shadow map so their subgraphs should be ignored.
if (transform.getReferenceFrame()==osg::Transform::ABSOLUTE_RF) return;
if (transform.getReferenceFrame()==osg::Transform::RELATIVE_RF)
{
osg::ref_ptr<osg::RefMatrix> matrix = new osg::RefMatrix(*getModelViewMatrix());
transform.computeLocalToWorldMatrix(*matrix,this);
pushModelViewMatrix(matrix.get(), transform.getReferenceFrame());
osg::ref_ptr<osg::RefMatrix> matrix = new osg::RefMatrix(*getModelViewMatrix());
transform.computeLocalToWorldMatrix(*matrix,this);
pushModelViewMatrix(matrix.get(), transform.getReferenceFrame());
traverse(transform);
traverse(transform);
popModelViewMatrix();
}
// pop the culling mode.
popCurrentMask();
popModelViewMatrix();
}
void apply(osg::Camera&)
@ -336,14 +358,12 @@ public:
//OSG_NOTICE<<"discarding("<<v<<")"<<std::endl;
return;
}
float x = v.x();
if (x<-1.0f) x=-1.0f;
if (x>1.0f) x=1.0f;
float y = v.y();
if (y<-1.0f) y=-1.0f;
if (y>1.0f) y=1.0f;
_bb.expandBy(osg::Vec3(x,y,v.z()));
}
@ -837,7 +857,7 @@ void ViewDependentShadowMap::cull(osgUtil::CullVisitor& cv)
// if we are using multiple shadow maps and CastShadowTraversalMask is being used
// traverse the scene to compute the extents of the objects
if (numShadowMapsPerLight>1 && _shadowedScene->getCastsShadowTraversalMask()!=0xffffffff)
if (/*numShadowMapsPerLight>1 &&*/ _shadowedScene->getCastsShadowTraversalMask()!=0xffffffff)
{
// osg::ElapsedTime timer;
@ -852,7 +872,6 @@ void ViewDependentShadowMap::cull(osgUtil::CullVisitor& cv)
osg::CullingSet& cs = clsb.getProjectionCullingStack().back();
cs.setFrustum(local_polytope);
clsb.pushCullingSet();
_shadowedScene->accept(clsb);
@ -864,7 +883,7 @@ void ViewDependentShadowMap::cull(osgUtil::CullVisitor& cv)
{
// OSG_NOTICE<<"Need to clamp projection matrix"<<std::endl;
#if 0
#if 1
double xMid = (clsb._bb.xMin()+clsb._bb.xMax())*0.5f;
double xRange = clsb._bb.xMax()-clsb._bb.xMin();
#else