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terrainbased objectpaging

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Signed-off-by: Bret Curtis <psi29a@gmail.com>
This commit is contained in:
bzzt 2019-06-13 13:37:00 +00:00 • committed by Bret Curtis
parent 87dba1fcfc
commit d684f1a78f
29 changed files with 648 additions and 142 deletions
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92
components/sceneutil/optimizer.cpp
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@ -103,7 +103,9 @@ void Optimizer::optimize(osg::Node* node, unsigned int options)
osg::Timer_t startTick = osg::Timer::instance()->tick();
MergeGeometryVisitor mgv(this);
mgv.setTargetMaximumNumberOfVertices(10000);
mgv.setTargetMaximumNumberOfVertices(1000000);
mgv.setMergeAlphaBlending(_mergeAlphaBlending);
mgv.setViewPoint(_viewPoint);
node->accept(mgv);
osg::Timer_t endTick = osg::Timer::instance()->tick();
@ -988,6 +990,17 @@ struct LessGeometry
}
};
struct LessGeometryViewPoint
{
osg::Vec3f _viewPoint;
bool operator() (const osg::ref_ptr<osg::Geometry>& lhs,const osg::ref_ptr<osg::Geometry>& rhs) const
{
float len1 = (lhs->getBoundingBox().center() - _viewPoint).length2();
float len2 = (rhs->getBoundingBox().center() - _viewPoint).length2();
return len2 < len1;
}
};
struct LessGeometryPrimitiveType
{
bool operator() (const osg::ref_ptr<osg::Geometry>& lhs,const osg::ref_ptr<osg::Geometry>& rhs) const
@ -1055,16 +1068,16 @@ bool isAbleToMerge(const osg::Geometry& g1, const osg::Geometry& g2)
void Optimizer::MergeGeometryVisitor::pushStateSet(osg::StateSet *stateSet)
{
_stateSetStack.push_back(stateSet);
checkAllowedToMerge();
checkAlphaBlendingActive();
}
void Optimizer::MergeGeometryVisitor::popStateSet()
{
_stateSetStack.pop_back();
checkAllowedToMerge();
checkAlphaBlendingActive();
}
void Optimizer::MergeGeometryVisitor::checkAllowedToMerge()
void Optimizer::MergeGeometryVisitor::checkAlphaBlendingActive()
{
int renderingHint = 0;
bool override = false;
@ -1080,7 +1093,7 @@ void Optimizer::MergeGeometryVisitor::checkAllowedToMerge()
override = true;
}
// Can't merge Geometry that are using a transparent sorting bin as that would cause the sorting to break.
_allowedToMerge = renderingHint != osg::StateSet::TRANSPARENT_BIN;
_alphaBlendingActive = renderingHint == osg::StateSet::TRANSPARENT_BIN;
}
void Optimizer::MergeGeometryVisitor::apply(osg::Group &group)
@ -1088,7 +1101,7 @@ void Optimizer::MergeGeometryVisitor::apply(osg::Group &group)
if (group.getStateSet())
pushStateSet(group.getStateSet());
if (_allowedToMerge)
if (!_alphaBlendingActive || _mergeAlphaBlending)
mergeGroup(group);
traverse(group);
@ -1097,6 +1110,14 @@ void Optimizer::MergeGeometryVisitor::apply(osg::Group &group)
popStateSet();
}
osg::PrimitiveSet* clonePrimitive(osg::PrimitiveSet* ps)
{
if (ps->referenceCount() <= 1)
return ps;
ps = dynamic_cast<osg::PrimitiveSet*>(ps->clone(osg::CopyOp::DEEP_COPY_ALL));
return ps;
}
bool Optimizer::MergeGeometryVisitor::mergeGroup(osg::Group& group)
{
if (!isOperationPermissibleForObject(&group)) return false;
@ -1120,7 +1141,7 @@ bool Optimizer::MergeGeometryVisitor::mergeGroup(osg::Group& group)
osg::Geometry* geom = child->asGeometry();
if (geom)
{
if (!geometryContainsSharedArrays(*geom) &&
if (
geom->getDataVariance()!=osg::Object::DYNAMIC &&
isOperationPermissibleForObject(geom))
{
@ -1254,6 +1275,12 @@ bool Optimizer::MergeGeometryVisitor::mergeGroup(osg::Group& group)
DuplicateList& duplicateList = *mitr;
if (!duplicateList.empty())
{
if (_alphaBlendingActive)
{
LessGeometryViewPoint lgvp;
lgvp._viewPoint = _viewPoint;
std::sort(duplicateList.begin(), duplicateList.end(), lgvp);
}
DuplicateList::iterator ditr = duplicateList.begin();
osg::ref_ptr<osg::Geometry> lhs = *ditr++;
group.addChild(lhs.get());
@ -1290,10 +1317,12 @@ bool Optimizer::MergeGeometryVisitor::mergeGroup(osg::Group& group)
{
if (prim->getNumIndices()==3)
{
prim = clonePrimitive(prim); (*itr) = prim;
prim->setMode(osg::PrimitiveSet::TRIANGLES);
}
else if (prim->getNumIndices()==4)
{
prim = clonePrimitive(prim); (*itr) = prim;
prim->setMode(osg::PrimitiveSet::QUADS);
}
}
@ -1320,6 +1349,8 @@ bool Optimizer::MergeGeometryVisitor::mergeGroup(osg::Group& group)
#if 1
bool doneCombine = false;
std::set<osg::PrimitiveSet*> toremove;
osg::Geometry::PrimitiveSetList& primitives = geom->getPrimitiveSetList();
unsigned int lhsNo=0;
unsigned int rhsNo=1;
@ -1348,6 +1379,8 @@ bool Optimizer::MergeGeometryVisitor::mergeGroup(osg::Group& group)
if (combine)
{
lhs = clonePrimitive(lhs);
primitives[lhsNo] = lhs;
switch(lhs->getType())
{
@ -1375,7 +1408,7 @@ bool Optimizer::MergeGeometryVisitor::mergeGroup(osg::Group& group)
if (combine)
{
// make this primitive set as invalid and needing cleaning up.
rhs->setMode(0xffffff);
toremove.insert(rhs);
doneCombine = true;
++rhsNo;
}
@ -1390,7 +1423,6 @@ bool Optimizer::MergeGeometryVisitor::mergeGroup(osg::Group& group)
if (doneCombine)
{
// now need to clean up primitiveset so it no longer contains the rhs combined primitives.
// first swap with a empty primitiveSet to empty it completely.
osg::Geometry::PrimitiveSetList oldPrimitives;
primitives.swap(oldPrimitives);
@ -1400,7 +1432,7 @@ bool Optimizer::MergeGeometryVisitor::mergeGroup(osg::Group& group)
pitr != oldPrimitives.end();
++pitr)
{
if ((*pitr)->getMode()!=0xffffff) primitives.push_back(*pitr);
if (!toremove.count(*pitr)) primitives.push_back(*pitr);
}
}
#endif
@ -1479,34 +1511,6 @@ bool Optimizer::MergeGeometryVisitor::mergeGroup(osg::Group& group)
return false;
}
bool Optimizer::MergeGeometryVisitor::geometryContainsSharedArrays(osg::Geometry& geom)
{
if (geom.getVertexArray() && geom.getVertexArray()->referenceCount()>1) return true;
if (geom.getNormalArray() && geom.getNormalArray()->referenceCount()>1) return true;
if (geom.getColorArray() && geom.getColorArray()->referenceCount()>1) return true;
if (geom.getSecondaryColorArray() && geom.getSecondaryColorArray()->referenceCount()>1) return true;
if (geom.getFogCoordArray() && geom.getFogCoordArray()->referenceCount()>1) return true;
for(unsigned int unit=0;unit<geom.getNumTexCoordArrays();++unit)
{
osg::Array* tex = geom.getTexCoordArray(unit);
if (tex && tex->referenceCount()>1) return true;
}
// shift the indices of the incoming primitives to account for the pre existing geometry.
for(osg::Geometry::PrimitiveSetList::iterator primItr=geom.getPrimitiveSetList().begin();
primItr!=geom.getPrimitiveSetList().end();
++primItr)
{
if ((*primItr)->referenceCount()>1) return true;
}
return false;
}
class MergeArrayVisitor : public osg::ArrayVisitor
{
protected:
@ -1574,6 +1578,8 @@ class MergeArrayVisitor : public osg::ArrayVisitor
bool Optimizer::MergeGeometryVisitor::mergeGeometry(osg::Geometry& lhs,osg::Geometry& rhs)
{
if (lhs.containsSharedArrays())
lhs.duplicateSharedArrays();
MergeArrayVisitor merger;
@ -1661,7 +1667,6 @@ bool Optimizer::MergeGeometryVisitor::mergeGeometry(osg::Geometry& lhs,osg::Geom
}
}
// shift the indices of the incoming primitives to account for the pre existing geometry.
osg::Geometry::PrimitiveSetList::iterator primItr;
for(primItr=rhs.getPrimitiveSetList().begin(); primItr!=rhs.getPrimitiveSetList().end(); ++primItr)
@ -1697,7 +1702,8 @@ bool Optimizer::MergeGeometryVisitor::mergeGeometry(osg::Geometry& lhs,osg::Geom
}
else
{
primitive->offsetIndices(base);
(*primItr) = clonePrimitive(primitive);
(*primItr)->offsetIndices(base);
}
}
break;
@ -1722,7 +1728,8 @@ bool Optimizer::MergeGeometryVisitor::mergeGeometry(osg::Geometry& lhs,osg::Geom
}
else
{
primitive->offsetIndices(base);
(*primItr) = clonePrimitive(primitive);
(*primItr)->offsetIndices(base);
}
}
break;
@ -1731,7 +1738,8 @@ bool Optimizer::MergeGeometryVisitor::mergeGeometry(osg::Geometry& lhs,osg::Geom
case(osg::PrimitiveSet::DrawArrayLengthsPrimitiveType):
case(osg::PrimitiveSet::DrawElementsUIntPrimitiveType):
default:
primitive->offsetIndices(base);
(*primItr) = clonePrimitive(primitive);
(*primItr)->offsetIndices(base);
break;
}
}