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Add FrameSwitch (geometry "double buffering") for efficient updates of RigGeometry & MorphGeometry

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This commit is contained in:
scrawl 2015-04-14 18:56:11 +02:00
parent c516e897ee
commit f7da979669
1 changed files with 54 additions and 2 deletions
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56
components/nifosg/nifloader.cpp
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@ -176,6 +176,36 @@ namespace
collectMaterialProperties(nifNode->parent, out);
}
class FrameSwitch : public osg::Group
{
public:
FrameSwitch()
{
}
FrameSwitch(const FrameSwitch& copy, const osg::CopyOp& copyop)
: osg::Group(copy, copyop)
{
}
META_Object(NifOsg, FrameSwitch)
virtual void traverse(osg::NodeVisitor& nv)
{
const osg::FrameStamp* stamp = nv.getFrameStamp();
if (!stamp || nv.getTraversalMode() != osg::NodeVisitor::TRAVERSE_ACTIVE_CHILDREN)
osg::Group::traverse(nv);
else
{
for (unsigned int i=0; i<getNumChildren(); ++i)
{
if (i%2 == stamp->getFrameNumber()%2)
getChild(i)->accept(nv);
}
}
}
};
// NodeCallback used to update the bone matrices in skeleton space as needed for skinning.
// Must be set on a Bone.
class UpdateBone : public osg::NodeCallback
@ -1306,7 +1336,19 @@ namespace NifOsg
geode->addDrawable(geometry);
parentNode->addChild(geode);
if (geometry->getDataVariance() == osg::Object::DYNAMIC)
{
// Add a copy, we will alternate between the two copies every other frame using the FrameSwitch
// This is so we can set the DataVariance as STATIC, giving a huge performance boost
geometry->setDataVariance(osg::Object::STATIC);
osg::ref_ptr<osg::Geode> geode2 = static_cast<osg::Geode*>(osg::clone(geode.get(), osg::CopyOp::DEEP_COPY_NODES|osg::CopyOp::DEEP_COPY_DRAWABLES));
osg::ref_ptr<FrameSwitch> frameswitch = new FrameSwitch;
frameswitch->addChild(geode);
frameswitch->addChild(geode2);
parentNode->addChild(frameswitch);
}
else
parentNode->addChild(geode);
}
static osg::ref_ptr<osg::Geometry> handleMorphGeometry(const Nif::NiGeomMorpherController* morpher)
@ -1419,7 +1461,17 @@ namespace NifOsg
geode->addDrawable(rig);
geode->addUpdateCallback(new DirtyBoundCallback);
trans->addChild(geode);
// Add a copy, we will alternate between the two copies every other frame using the FrameSwitch
// This is so we can set the DataVariance as STATIC, giving a huge performance boost
rig->setDataVariance(osg::Object::STATIC);
osg::Geode* geode2 = static_cast<osg::Geode*>(osg::clone(geode.get(), osg::CopyOp::DEEP_COPY_NODES|
osg::CopyOp::DEEP_COPY_DRAWABLES));
osg::ref_ptr<FrameSwitch> frameswitch = new FrameSwitch;
frameswitch->addChild(geode);
frameswitch->addChild(geode2);
trans->addChild(frameswitch);
parentNode->addChild(trans);
}