simgear/scene/util/StateAttributeFactory.cxx

   1 #include <OpenThreads/ScopedLock>
   2
   3 #include "StateAttributeFactory.hxx"
   4
   5 using namespace osg;
   6
   7 namespace simgear
   8 {
   9 StateAttributeFactory::StateAttributeFactory()
  10 {
  11     _standardAlphaFunc = new AlphaFunc;
  12     _standardAlphaFunc->setFunction(osg::AlphaFunc::GREATER);
  13     _standardAlphaFunc->setReferenceValue(0.01);
  14     _standardAlphaFunc->setDataVariance(Object::STATIC);
  15     _smooth = new ShadeModel;
  16     _smooth->setMode(ShadeModel::SMOOTH);
  17     _smooth->setDataVariance(Object::STATIC);
  18     _flat = new ShadeModel(ShadeModel::FLAT);
  19     _flat->setDataVariance(Object::STATIC);
  20     _standardBlendFunc = new BlendFunc;
  21     _standardBlendFunc->setSource(BlendFunc::SRC_ALPHA);
  22     _standardBlendFunc->setDestination(BlendFunc::ONE_MINUS_SRC_ALPHA);
  23     _standardBlendFunc->setDataVariance(Object::STATIC);
  24     _standardTexEnv = new TexEnv;
  25     _standardTexEnv->setMode(TexEnv::MODULATE);
  26     _standardTexEnv->setDataVariance(Object::STATIC);
  27 }
  28
  29 osg::ref_ptr<StateAttributeFactory> StateAttributeFactory::_theInstance;
  30 OpenThreads::Mutex StateAttributeFactory::_instanceMutex;
  31
  32 StateAttributeFactory* StateAttributeFactory::instance()
  33 {
  34     OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_instanceMutex);
  35     if (!_theInstance.valid()) {
  36         _theInstance = new StateAttributeFactory;
  37     }
  38     return _theInstance.get();
  39 }
  40 }