SO3Engine/SO3Material/SO3Compositor.cpp

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#include "SO3Compositor.h"
#include "../SO3Renderer/SO3ViewPort.h"

namespace SO3
{

SCompositor::SCompositor(SViewPort* scolViewPort, std::string compositorName, std::string schemeName) : SData(compositorName)
{
        parent = scolViewPort;
  scheme = schemeName;

        mBlackMat = Ogre::MaterialManager::getSingleton().create("Ogre/mSchemeBlack/" + scheme, "SO3/Internal");
        mBlackMat->getTechnique(0)->getPass(0)->setDiffuse(0,0,0,0);
        mBlackMat->getTechnique(0)->getPass(0)->setSpecular(0,0,0,0);
        mBlackMat->getTechnique(0)->getPass(0)->setAmbient(0,0,0);
        mBlackMat->getTechnique(0)->getPass(0)->setSelfIllumination(0,0,0);

  _AttachToParent();
}

SCompositor::SCompositor() : SData("")
{
  // Forbiden (private)
}

SCompositor::~SCompositor()
{
  _DetachFromParent();

  Ogre::MaterialManager::getSingleton().remove(mBlackMat->getHandle());
  mBlackMat.setNull();
}

void SCompositor::_AttachToParent()
{
  if(!Ogre::CompositorManager::getSingleton().getByName(name)->isLoaded())
    Ogre::CompositorManager::getSingleton().getByName(name)->load();

  // Compositor manager create a compositor chain since Ogre 1.7, so don't forget to delete it!
  Ogre::CompositorManager::getSingleton().addCompositor(const_cast <Ogre::Viewport*> (parent->GetOgreViewPortPointer()), name); 
  SetEnable(true);
}

void SCompositor::_DetachFromParent()
{
  SetEnable(false);

// If our ogre is anterior to v1.7
#if OGRE_VERSION < ((1 << 16) | (7 << 8) | 0)
  // Ogre 1.6 method
        Ogre::CompositorManager::getSingleton().removeCompositor(const_cast <Ogre::Viewport*> (parent->GetOgreViewPortPointer()), name); 
#else
  // New Ogre 1.7+ method
  Ogre::Viewport* ogreViewport = const_cast <Ogre::Viewport*> (parent->GetOgreViewPortPointer());
  Ogre::CompositorChain* chain = Ogre::CompositorManager::getSingleton().getCompositorChain(ogreViewport);
  chain->_removeInstance(chain->getCompositor(name));

  // Destroy chain if needed.
  if(chain->getNumCompositors() == 0)
    Ogre::CompositorManager::getSingleton().removeCompositorChain(ogreViewport);
#endif
}

SViewPort* SCompositor::GetParentViewPort() 
{
        return parent;
}

bool SCompositor::GetEnable()
{
  return isEnable;
}

void SCompositor::SetEnable(bool enable)
{
  if (enable != isEnable)
  {
    if (enable)
    {
      if (scheme != "")
                    Ogre::MaterialManager::getSingleton().addListener(this);
    }
    else
    {
      Ogre::MaterialManager::getSingleton().removeListener(this);
    }

    Ogre::CompositorManager::getSingleton().setCompositorEnabled(const_cast <Ogre::Viewport*> (parent->GetOgreViewPortPointer()), name, enable);
    isEnable = enable;
  }
}

Ogre::Technique* SCompositor::handleSchemeNotFound(unsigned short schemeIndex, const Ogre::String& schemeName, Ogre::Material* originalMaterial, unsigned short lodIndex, const Ogre::Renderable* rend)
{
        if (schemeName == scheme)
        {
                return mBlackMat->getTechnique(0);
        }
        return NULL;
}

}

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