//-----------------------------------------------------------------------
void CompositorChain::preViewportUpdate(const RenderTargetViewportEvent& evt)
{
// Only set up if there is at least one compositor enabled, and it's this viewport
if(evt.source != mViewport || !mAnyCompositorsEnabled)
return;
// set original scene details from viewport
CompositionPass* pass = mOriginalScene->getTechnique()->getOutputTargetPass()->getPass(0);
CompositionTargetPass* passParent = pass->getParent();
if (pass->getClearBuffers() != mViewport->getClearBuffers() ||
pass->getClearColour() != mViewport->getBackgroundColour() ||
pass->getClearDepth() != mViewport->getDepthClear() ||
passParent->getVisibilityMask() != mViewport->getVisibilityMask() ||
passParent->getMaterialScheme() != mViewport->getMaterialScheme() ||
passParent->getShadowsEnabled() != mViewport->getShadowsEnabled())
{
// recompile if viewport settings are different
pass->setClearBuffers(mViewport->getClearBuffers());
pass->setClearColour(mViewport->getBackgroundColour());
pass->setClearDepth(mViewport->getDepthClear());
passParent->setVisibilityMask(mViewport->getVisibilityMask());
passParent->setMaterialScheme(mViewport->getMaterialScheme());
passParent->setShadowsEnabled(mViewport->getShadowsEnabled());
_compile();
}
Camera *cam = mViewport->getCamera();
if (cam)
{
/// Prepare for output operation
preTargetOperation(mOutputOperation, mViewport, cam);
}
}
//-----------------------------------------------------------------------
void CompositorChain::_compile()
{
// remove original scene if it has the wrong material scheme
if( mOriginalSceneScheme != mViewport->getMaterialScheme() )
{
destroyOriginalScene();
createOriginalScene();
}
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());
pass->setClearDepth(mViewport->getDepthClear());
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;
}
