FGFS-4.1/OpenSceneGraph
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Added custom callback to capture RenderBins

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This commit is contained in:
Robert Osfield
2007-01-26 09:44:49 +00:00
parent aa339f8e7a
commit df7ab22414
1 changed files with 74 additions and 5 deletions
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79
examples/osgshadow/osgshadow.cpp
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@@ -316,7 +316,32 @@ osg::Node* createTestModel()
class ShadowCallback : public osg::NodeCallback
{
public:
ShadowCallback() {}
osg::Vec4 _lightpos;
osg::ref_ptr<osg::StateSet> _ss1;
ShadowCallback()
{
osg::Vec4 ambient(0.2,0.2,0.2,1.0);
osg::Vec4 diffuse(0.8,0.8,0.8,1.0);
osg::Vec4 zero_colour(0.0,0.0,0.0,1.0);
// first group, render the depth buffer + ambient light contribution
{
_ss1 = new osg::StateSet;
osg::LightModel* lm1 = new osg::LightModel;
lm1->setAmbientIntensity(ambient);
_ss1->setAttribute(lm1);
osg::Light* light1 = new osg::Light;
light1->setAmbient(ambient);
light1->setDiffuse(zero_colour);
light1->setPosition(_lightpos);
_ss1->setAttributeAndModes(light1, osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE);
_ss1->setMode(GL_LIGHTING, osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE);
}
}
virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
{
@@ -329,18 +354,21 @@ public:
return;
}
osgUtil::RenderBin* original_bin = cv->getCurrentRenderBin();
osg::ref_ptr<osgUtil::RenderBin> original_bin = cv->getCurrentRenderBin();
osgUtil::RenderBin* new_bin = original_bin->find_or_insert(999,"RenderBin");
osg::ref_ptr<osgUtil::RenderBin> new_bin = original_bin->find_or_insert(999,"RenderBin");
cv->setCurrentRenderBin(new_bin);
cv->setCurrentRenderBin(new_bin.get());
traverse(node,nv);
cv->setCurrentRenderBin(original_bin.get());
osg::notify(osg::NOTICE)<<"new_bin->getStateGraphList().size()= "<<new_bin->getStateGraphList().size()<<std::endl;
osg::notify(osg::NOTICE)<<"new_bin->getRenderBinList().size()= "<<new_bin->getRenderBinList().size()<<std::endl;
osg::notify(osg::NOTICE)<<"new_bin->getRenderLeafList().size()= "<<new_bin->getRenderLeafList().size()<<std::endl;
for(osgUtil::RenderBin::RenderBinList::iterator itr = new_bin->getRenderBinList().begin();
itr != new_bin->getRenderBinList().end();
++itr)
@@ -348,7 +376,48 @@ public:
osg::notify(osg::NOTICE)<<"bin num = "<<itr->first<<std::endl;
}
cv->setCurrentRenderBin(original_bin);
osgUtil::RenderBin::RenderBinList::iterator itr = new_bin->getRenderBinList().find(1000);
osg::ref_ptr<osgUtil::RenderBin> shadowVolumeBin;
if (itr != new_bin->getRenderBinList().end())
{
shadowVolumeBin = itr->second;
if (shadowVolumeBin.valid())
{
osg::notify(osg::NOTICE)<<"Found shadow volume bin, now removing it"<<std::endl;
new_bin->getRenderBinList().erase(itr);
}
}
for(osgUtil::RenderBin::RenderBinList::iterator itr = new_bin->getRenderBinList().begin();
itr != new_bin->getRenderBinList().end();
++itr)
{
osg::notify(osg::NOTICE)<<"bin num = "<<itr->first<<std::endl;
}
osg::notify(osg::NOTICE)<<"after new_bin->getStateGraphList().size()= "<<new_bin->getStateGraphList().size()<<std::endl;
osg::notify(osg::NOTICE)<<"after new_bin->getRenderBinList().size()= "<<new_bin->getRenderBinList().size()<<std::endl;
osg::notify(osg::NOTICE)<<"after new_bin->getRenderLeafList().size()= "<<new_bin->getRenderLeafList().size()<<std::endl;
original_bin->setStateSet(_ss1.get());
osgUtil::RenderStage* orig_rs = cv->getRenderStage();
osgUtil::RenderStage* new_rs = new osgUtil::RenderStage;
orig_rs->addPostRenderStage(new_rs);
new_rs->setViewport(orig_rs->getViewport());
new_rs->setClearColor(orig_rs->getClearColor());
new_rs->setClearMask(GL_STENCIL_BUFFER_BIT);
if (shadowVolumeBin.valid())
{
new_rs->getRenderBinList()[0] = shadowVolumeBin;
new_rs->getRenderBinList()[1] = new_bin;
}
}
};