//-----------------------------------------------------------------------
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() ||
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());
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 CompositorInstance::_compileTargetOperations(CompiledState &compiledState)
{
/// Collect targets of previous state
if(mPreviousInstance)
mPreviousInstance->_compileTargetOperations(compiledState);
/// Texture targets
CompositionTechnique::TargetPassIterator it = mTechnique->getTargetPassIterator();
while(it.hasMoreElements())
{
CompositionTargetPass *target = it.getNext();
TargetOperation ts(getTargetForTex(target->getOutputName()));
/// Set "only initial" flag, visibilityMask and lodBias according to CompositionTargetPass.
ts.onlyInitial = target->getOnlyInitial();
ts.visibilityMask = target->getVisibilityMask();
ts.lodBias = target->getLodBias();
/// Check for input mode previous
if(target->getInputMode() == CompositionTargetPass::IM_PREVIOUS)
{
/// Collect target state for previous compositor
/// The TargetOperation for the final target is collected seperately as it is merged
/// with later operations
mPreviousInstance->_compileOutputOperation(ts);
}
/// Collect passes of our own target
collectPasses(ts, target);
compiledState.push_back(ts);
}
}
//-----------------------------------------------------------------------
void CompositorInstance::_compileOutputOperation(TargetOperation &finalState)
{
/// Final target
CompositionTargetPass *tpass = mTechnique->getOutputTargetPass();
/// Logical-and together the visibilityMask, and multiply the lodBias
finalState.visibilityMask &= tpass->getVisibilityMask();
finalState.lodBias *= tpass->getLodBias();
if(tpass->getInputMode() == CompositionTargetPass::IM_PREVIOUS)
{
/// Collect target state for previous compositor
/// The TargetOperation for the final target is collected seperately as it is merged
/// with later operations
mPreviousInstance->_compileOutputOperation(finalState);
}
/// Collect passes
collectPasses(finalState, tpass);
}
