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Share the StateSet used to invert front face

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This commit is contained in:
scrawl 2016-03-02 13:33:31 +01:00
parent 67c8faec75
commit 563807ee53
1 changed files with 9 additions and 3 deletions
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8
components/sceneutil/attach.cpp
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@ -102,9 +102,15 @@ namespace SceneUtil
// Need to invert culling because of the negative scale // Need to invert culling because of the negative scale
// Note: for absolute correctness we would need to check the current front face for every mesh then invert it // Note: for absolute correctness we would need to check the current front face for every mesh then invert it
// However MW isn't doing this either, so don't. Assuming all meshes are using backface culling is more efficient. // However MW isn't doing this either, so don't. Assuming all meshes are using backface culling is more efficient.
static osg::ref_ptr<osg::StateSet> frontFaceStateSet;
if (!frontFaceStateSet)
{
frontFaceStateSet = new osg::StateSet;
osg::FrontFace* frontFace = new osg::FrontFace; osg::FrontFace* frontFace = new osg::FrontFace;
frontFace->setMode(osg::FrontFace::CLOCKWISE); frontFace->setMode(osg::FrontFace::CLOCKWISE);
trans->getOrCreateStateSet()->setAttributeAndModes(frontFace, osg::StateAttribute::ON); frontFaceStateSet->setAttributeAndModes(frontFace, osg::StateAttribute::ON);
}
trans->setStateSet(frontFaceStateSet);
} }
if (trans) if (trans)