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optimizer: don't merge Geometry that has transparency sorting enabled

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This commit is contained in:
scrawl 2017-02-23 20:41:07 +01:00
parent ebfd845eae
commit e4c12e5e56
2 changed files with 53 additions and 3 deletions
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45
components/sceneutil/optimizer.cpp
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@ -1032,6 +1032,51 @@ bool isAbleToMerge(const osg::Geometry& g1, const osg::Geometry& g2)
}
void Optimizer::MergeGeometryVisitor::pushStateSet(osg::StateSet *stateSet)
{
_stateSetStack.push_back(stateSet);
checkAllowedToMerge();
}
void Optimizer::MergeGeometryVisitor::popStateSet()
{
_stateSetStack.pop_back();
checkAllowedToMerge();
}
void Optimizer::MergeGeometryVisitor::checkAllowedToMerge()
{
int renderingHint = 0;
bool override = false;
for (std::vector<osg::StateSet*>::const_iterator it = _stateSetStack.begin(); it != _stateSetStack.end(); ++it)
{
osg::StateSet* stateSet = *it;
osg::StateSet::RenderBinMode mode = stateSet->getRenderBinMode();
if (override && (!mode & osg::StateSet::PROTECTED_RENDERBIN_DETAILS))
continue;
if (mode & osg::StateSet::USE_RENDERBIN_DETAILS)
renderingHint = stateSet->getRenderingHint();
if (mode & osg::StateSet::OVERRIDE_RENDERBIN_DETAILS)
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;
}
void Optimizer::MergeGeometryVisitor::apply(osg::Group &group)
{
if (group.getStateSet())
pushStateSet(group.getStateSet());
if (_allowedToMerge)
mergeGroup(group);
traverse(group);
if (group.getStateSet())
popStateSet();
}
bool Optimizer::MergeGeometryVisitor::mergeGroup(osg::Group& group)
{
if (!isOperationPermissibleForObject(&group)) return false;