//-----------------------------------------------------------------------
void CompositorChain::_compile()
{
clearCompiledState();
bool compositorsEnabled = false;
// force default scheme so materials for compositor quads will determined correctly
MaterialManager& matMgr = MaterialManager::getSingleton();
String prevMaterialScheme = matMgr.getActiveScheme();
matMgr.setActiveScheme(MaterialManager::DEFAULT_SCHEME_NAME);
/// Set previous CompositorInstance for each compositor in the list
CompositorInstance *lastComposition = mOriginalScene;
mOriginalScene->mPreviousInstance = 0;
CompositionPass* pass = mOriginalScene->getTechnique()->getOutputTargetPass()->getPass(0);
pass->setClearBuffers(mViewport->getClearBuffers());
pass->setClearColour(mViewport->getBackgroundColour());
for(Instances::iterator i=mInstances.begin(); i!=mInstances.end(); ++i)
{
if((*i)->getEnabled())
{
compositorsEnabled = true;
(*i)->mPreviousInstance = lastComposition;
lastComposition = (*i);
}
}
/// Compile misc targets
lastComposition->_compileTargetOperations(mCompiledState);
/// Final target viewport (0)
mOutputOperation.renderSystemOperations.clear();
lastComposition->_compileOutputOperation(mOutputOperation);
// Deal with viewport settings
if (compositorsEnabled != mAnyCompositorsEnabled)
{
mAnyCompositorsEnabled = compositorsEnabled;
if (mAnyCompositorsEnabled)
{
// Save old viewport clearing options
mOldClearEveryFrameBuffers = mViewport->getClearBuffers();
// Don't clear anything every frame since we have our own clear ops
mViewport->setClearEveryFrame(false);
}
else
{
// Reset clearing options
mViewport->setClearEveryFrame(mOldClearEveryFrameBuffers > 0,
mOldClearEveryFrameBuffers);
}
}
// restore material scheme
matMgr.setActiveScheme(prevMaterialScheme);
mDirty = false;
}
//-----------------------------------------------------------------------
void CompositorChain::destroyResources(void)
{
clearCompiledState();
if (mViewport)
{
mViewport->getTarget()->removeListener(this);
mViewport->removeListener(this);
removeAllCompositors();
destroyOriginalScene();
mViewport = 0;
}
}
//-----------------------------------------------------------------------
void CompositorChain::destroyResources(void)
{
clearCompiledState();
if (mViewport)
{
removeAllCompositors();
/// Destroy "original scene" compositor instance
if (mOriginalScene)
{
mViewport->getTarget()->removeListener(this);
OGRE_DELETE mOriginalScene;
mOriginalScene = 0;
}
mViewport = 0;
}
}
