void LLDrawable::mergeFaces(LLDrawable* src)
{
	U32 face_count = mFaces.size() + src->mFaces.size();

	mFaces.reserve(face_count);
	for (U32 i = 0; i < src->mFaces.size(); i++)
	{
		LLFace* facep = src->mFaces[i];
		facep->setDrawable(this);
		mFaces.push_back(facep);
	}
	src->mFaces.clear();
}