// general cortex render function, takes a gu_detail and uses the NodePassData attribute
// to call the required render method
void GR_Cortex::render( GU_Detail *gdp, const IECoreGL::State *displayState )
{
// gl scene from a parameterised procedural
const GA_ROAttributeRef attrRef = gdp->findAttribute( GA_ATTRIB_DETAIL, GA_SCOPE_PRIVATE, "IECoreHoudiniNodePassData" );
if ( attrRef.isInvalid() )
{
return;
}
const GA_Attribute *attr = attrRef.getAttribute();
const GA_AIFBlindData *blindData = attr->getAIFBlindData();
const NodePassData passData = blindData->getValue<NodePassData>( attr, 0 );
switch( passData.type() )
{
case IECoreHoudini::NodePassData::CORTEX_OPHOLDER :
{
SOP_OpHolder *sop = dynamic_cast<SOP_OpHolder*>( const_cast<OP_Node*>( passData.nodePtr() ) );
if ( !sop )
{
return;
}
IECore::OpPtr op = IECore::runTimeCast<IECore::Op>( sop->getParameterised() );
if ( !op )
{
return;
}
const IECore::Parameter *result_parameter = op->resultParameter();
const IECore::Object *result_object = result_parameter->getValue();
renderObject( result_object, displayState );
break;
}
case IECoreHoudini::NodePassData::CORTEX_PROCEDURALHOLDER :
{
SOP_ProceduralHolder *sop = dynamic_cast<SOP_ProceduralHolder*>( const_cast<OP_Node*>( passData.nodePtr() ) );
if ( !sop )
{
return;
}
IECoreGL::ConstScenePtr scene = sop->scene();
if ( !scene )
{
return;
}
scene->render( const_cast<IECoreGL::State *>( displayState ) );
break;
}
default :
{
break;
}
}
}
MStatus OpHolder<B>::compute( const MPlug &plug, MDataBlock &block )
{
IECore::OpPtr op = getOp();
if (op)
{
MFnDependencyNode fnDN( B::thisMObject() );
MPlug resultPlug( B::thisMObject(), fnDN.attribute( "result" ) );
if (plug != resultPlug)
{
return MS::kUnknownParameter;
}
IECore::ObjectPtr result;
try
{
ParameterisedHolder<B>::setParameterisedValues( true /* lazy */ );
result = op->operate();
if (!result)
{
return MS::kFailure;
}
}
catch( std::exception &e )
{
MGlobal::displayError( e.what() );
return MS::kFailure;
}
catch( boost::python::error_already_set & )
{
IECorePython::ScopedGILLock lock;
PyErr_Print();
return MS::kFailure;
}
catch (...)
{
return MS::kFailure;
}
assert( result );
MStatus s = ParameterHandler::setValue( op->resultParameter(), resultPlug );
block.setClean( resultPlug );
return s;
}
return MS::kFailure;
}
MStatus OpHolder<B>::createResultAttribute()
{
IECore::OpPtr op = IECore::runTimeCast<IECore::Op>( ParameterisedHolder<B>::m_parameterised );
if( !op )
{
MString nodeName = ParameterisedHolder<B>::name();
msg( Msg::Error, "OpHolder::createResultAttribute", boost::format( "No Op found on node \"%s\"." ) % nodeName.asChar() );
return MStatus::kFailure;
}
MStatus s = ParameterisedHolder<B>::createOrUpdateAttribute( const_cast<IECore::Parameter *>( op->resultParameter() ), "result" );
if( !s )
{
MString nodeName = ParameterisedHolder<B>::name();
msg( Msg::Error, "OpHolder::createResultAttribute", boost::format( "Unable to update result attribute to represent class \"%s\" on node \"%s\"." ) % op->typeName() % nodeName.asChar() );
return s;
}
MFnDependencyNode fnDN( B::thisMObject() );
MObject attribute = fnDN.attribute( "result" );
MFnAttribute fnAttr( attribute );
fnAttr.setWritable( false );
fnAttr.setStorable( false );
return MStatus::kSuccess;
}
void SOP_ParameterisedHolder::setInputParameterValues( float now )
{
for ( unsigned int i=0; i < m_inputParameters.size(); i++ )
{
useInputSource( i, m_dirty, false );
IECore::ParameterPtr inputParameter = m_inputParameters[i];
GU_DetailHandle inputHandle = inputGeoHandle( i );
GU_DetailHandleAutoReadLock readHandle( inputHandle );
const GU_Detail *inputGdp = readHandle.getGdp();
if ( !inputGdp )
{
continue;
}
const GA_ROAttributeRef attrRef = inputGdp->findAttribute( GA_ATTRIB_DETAIL, GA_SCOPE_PRIVATE, "IECoreHoudiniNodePassData" );
if ( attrRef.isValid() )
{
// looks like data passed from another ParameterisedHolder
const GA_Attribute *attr = attrRef.getAttribute();
const GA_AIFBlindData *blindData = attr->getAIFBlindData();
const NodePassData passData = blindData->getValue<NodePassData>( attr, 0 );
SOP_ParameterisedHolder *sop = dynamic_cast<SOP_ParameterisedHolder*>( const_cast<OP_Node*>( passData.nodePtr() ) );
IECore::ConstObjectPtr result = 0;
if ( passData.type() == IECoreHoudini::NodePassData::CORTEX_OPHOLDER )
{
IECore::OpPtr op = IECore::runTimeCast<IECore::Op>( sop->getParameterised() );
result = op->resultParameter()->getValue();
}
else if ( passData.type() == IECoreHoudini::NodePassData::CORTEX_PROCEDURALHOLDER )
{
IECore::ParameterisedProcedural *procedural = IECore::runTimeCast<IECore::ParameterisedProcedural>( sop->getParameterised() );
IECore::CapturingRendererPtr renderer = new IECore::CapturingRenderer();
// We are acquiring and releasing the GIL here to ensure that it is released when we render. This has
// to be done because a procedural might jump between c++ and python a few times (i.e. if it spawns
// subprocedurals that are implemented in python). In a normal call to cookMySop, this wouldn't be an
// issue, but if cookMySop was called from HOM, hou.Node.cook appears to be holding onto the GIL.
IECorePython::ScopedGILLock gilLock;
{
IECorePython::ScopedGILRelease gilRelease;
{
IECore::WorldBlock worldBlock( renderer );
procedural->render( renderer );
}
}
result = IECore::runTimeCast<const IECore::Object>( renderer->world() );
}
else
{
continue;
}
try
{
inputParameter->setValidatedValue( IECore::constPointerCast<IECore::Object>( result ) );
}
catch ( const IECore::Exception &e )
{
addError( SOP_MESSAGE, e.what() );
}
}
else
{
// looks like a regular Houdini detail
IECore::ObjectParameterPtr objectParameter = IECore::runTimeCast<IECore::ObjectParameter>( inputParameter );
if ( !objectParameter )
{
continue;
}
FromHoudiniGeometryConverterPtr converter = FromHoudiniGeometryConverter::create( inputHandle, objectParameter->validTypes() );
if ( !converter )
{
continue;
}
// set converter parameters from the node values
const CompoundParameter::ParameterVector &converterParameters = converter->parameters()->orderedParameters();
for ( CompoundParameter::ParameterVector::const_iterator it=converterParameters.begin(); it != converterParameters.end(); ++it )
{
updateParameter( *it, now, "parm_" + inputParameter->name() + "_" );
}
try
{
IECore::ObjectPtr converted = converter->convert();
if ( converted )
{
inputParameter->setValidatedValue( converted );
}
}
catch ( const IECore::Exception &e )
{
addError( SOP_MESSAGE, e.what() );
}
catch ( std::runtime_error &e )
{
addError( SOP_MESSAGE, e.what() );
}
}
}
}
/// Cook the SOP! This method does all the work
OP_ERROR SOP_OpHolder::cookMySop( OP_Context &context )
{
IECore::MessageHandler::Scope handlerScope( getMessageHandler() );
// some defaults and useful variables
Imath::Box3f bbox( Imath::V3f(-1,-1,-1), Imath::V3f(1,1,1) );
float now = context.getTime();
// force eval of our nodes parameters with our hidden parameter expression
evalInt( "__evaluateParameters", 0, now );
// get our op
IECore::OpPtr op = IECore::runTimeCast<IECore::Op>( getParameterised() );
// check for a valid parameterised on this SOP
if ( !op )
{
UT_String msg( "Op Holder has no parameterised class to operate on!" );
addError( SOP_MESSAGE, msg );
return error();
}
if( lockInputs(context)>=UT_ERROR_ABORT )
{
return error();
}
// start our work
UT_Interrupt *boss = UTgetInterrupt();
boss->opStart("Building OpHolder Geometry...");
gdp->clearAndDestroy();
setParameterisedValues( now );
try
{
// make our Cortex op do it's thing...
op->operate();
// pass ourselves onto the GR_Cortex render hook
IECoreHoudini::NodePassData data( this, IECoreHoudini::NodePassData::CORTEX_OPHOLDER );
GA_RWAttributeRef attrRef = gdp->createAttribute( GA_ATTRIB_DETAIL, GA_SCOPE_PRIVATE, "IECoreHoudiniNodePassData", NULL, NULL, "blinddata" );
GA_Attribute *attr = attrRef.getAttribute();
const GA_AIFBlindData *blindData = attr->getAIFBlindData();
blindData->setDataSize( attr, sizeof(IECoreHoudini::NodePassData), &data );
// if our result is a visible renderable then set our bounds on our output gdp
const IECore::Object *result = op->resultParameter()->getValue();
IECore::ConstVisibleRenderablePtr renderable = IECore::runTimeCast<const IECore::VisibleRenderable>( result );
if ( renderable )
{
Imath::Box3f bbox = renderable->bound();
gdp->cube( bbox.min.x, bbox.max.x, bbox.min.y, bbox.max.y, bbox.min.z, bbox.max.z, 0, 0, 0, 1, 1 );
}
}
catch( boost::python::error_already_set )
{
addError( SOP_MESSAGE, "Error raised during Python evaluation!" );
IECorePython::ScopedGILLock lock;
PyErr_Print();
}
catch( const IECore::Exception &e )
{
addError( SOP_MESSAGE, e.what() );
}
catch( const std::exception &e )
{
addError( SOP_MESSAGE, e.what() );
}
catch( ... )
{
addError( SOP_MESSAGE, "Caught unknown exception!" );
}
// tidy up & go home!
boss->opEnd();
unlockInputs();
return error();
}