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Use the lowest unused texture unit for the enchanted item glow texture

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This commit is contained in:
scrawl 2016-02-18 23:10:58 +01:00
parent 5e12a1b4ef
commit 17c4dfdb62
1 changed files with 22 additions and 1 deletions
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23
apps/openmw/mwrender/animation.cpp
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@ -1041,6 +1041,25 @@ namespace MWRender
return mObjectRoot.get();
}
class FindLowestUnusedTexUnitVisitor : public osg::NodeVisitor
{
public:
FindLowestUnusedTexUnitVisitor()
: osg::NodeVisitor(TRAVERSE_ALL_CHILDREN)
, mLowestUnusedTexUnit(0)
{
}
virtual void apply(osg::Node& node)
{
if (osg::StateSet* stateset = node.getStateSet())
mLowestUnusedTexUnit = std::max(mLowestUnusedTexUnit, int(stateset->getTextureAttributeList().size()));
traverse(node);
}
int mLowestUnusedTexUnit;
};
void Animation::addGlow(osg::ref_ptr<osg::Node> node, osg::Vec4f glowColor)
{
std::vector<osg::ref_ptr<osg::Texture2D> > textures;
@ -1062,7 +1081,9 @@ namespace MWRender
textures.push_back(tex);
}
int texUnit = 1; // FIXME: might not always be 1
FindLowestUnusedTexUnitVisitor findLowestUnusedTexUnitVisitor;
node->accept(findLowestUnusedTexUnitVisitor);
int texUnit = findLowestUnusedTexUnitVisitor.mLowestUnusedTexUnit;
osg::ref_ptr<GlowUpdater> glowupdater (new GlowUpdater(texUnit, glowColor, textures));
node->addUpdateCallback(glowupdater);