fixed SSS material

src/librender/subsurface.cpp

@@ -50,16 +50,26 @@ Subsurface::Subsurface(Stream *stream, InstanceManager *manager) :
 	m_eta = stream->readFloat();
 	m_sizeMultiplier = stream->readFloat();
 	unsigned int shapeCount = stream->readUInt();
-	for (unsigned int i=0; i<shapeCount; ++i)
+
-		m_shapes.push_back(static_cast<Shape *>(manager->getInstance(stream)));
+	for (unsigned int i=0; i<shapeCount; ++i) {
+		Shape *shape = static_cast<Shape *>(manager->getInstance(stream));
+		m_shapes.push_back(shape);
+	}
 	m_sigmaT = m_sigmaS + m_sigmaA;
 }
-	
+
+Subsurface::~Subsurface() {
+}
+
 void Subsurface::setParent(ConfigurableObject *parent) {
 	if (parent->getClass()->derivesFrom(Shape::m_theClass)) {
 		Shape *shape = static_cast<Shape *>(parent);
-		m_shapes.push_back(shape);
+		if (shape->isCompound())
-		m_configured = false;
+			return;
+		if (std::find(m_shapes.begin(), m_shapes.end(), shape) == m_shapes.end()) {
+			m_shapes.push_back(shape);
+			m_configured = false;
+		}
 	} else {
 		Log(EError, "IsotropicDipole: Invalid child node!");
 	}
@@ -77,8 +87,5 @@ void Subsurface::serialize(Stream *stream, InstanceManager *manager) const {
 		manager->serialize(stream, m_shapes[i]);
 }
 
-Subsurface::~Subsurface() {
-}
-
 MTS_IMPLEMENT_CLASS(Subsurface, true, NetworkedObject)
 MTS_NAMESPACE_END

src/shapes/cylinder.cpp

@@ -214,16 +214,6 @@ public:
 		return true;
 	}
 
-	AABB getClippedAABB(const AABB &box) const {
-		/* Compute a base bounding box */
-		AABB base(getAABB());
-		base.clip(box);
-
-		/* Now forget about the cylinder ends and 
-		   intersect an infinite cylinder with each AABB face */
-		return box;
-	}
-
 #if 0
 	inline AABB getAABB(Float start, Float end) const {
 		AABB result;
@@ -238,6 +228,17 @@ public:
 		return result;
 	}
 
+	AABB getClippedAABB(const AABB &box) const {
+		/* Compute a base bounding box */
+		AABB base(getAABB());
+		base.clip(box);
+
+		/* Now forget about the cylinder ends and 
+		   intersect an infinite cylinder with each AABB face */
+		return box;
+	}
+
+
 	AABB getAABB() const {
 		/* Very approximate .. */
 		return getAABB(0, m_length);

src/subsurface/dipole.cpp

@@ -255,13 +255,14 @@ public:
 
 		Float sa = 0;
 		for (std::vector<Shape *>::iterator it = m_shapes.begin(); 
-			it != m_shapes.end(); ++it)
+			it != m_shapes.end(); ++it) 
 			sa += (*it)->getSurfaceArea();
 		size_t sampleCount = (size_t) std::ceil(sa / (M_PI * m_minMFP * m_minMFP)
 			* m_sampleMultiplier);
+		Log(EInfo, "Generating " SIZE_T_FMT " irradiance samples..", sampleCount);
 
 		ref<Scheduler> sched = Scheduler::getInstance();
-		
+
 		/* This could be a bit more elegant.. - inform the irradiance
 		   sampler about the index of this subsurface integrator */
 		std::vector<Subsurface *> ssIntegrators
@@ -295,7 +296,7 @@ public:
 		m_octreeResID = Scheduler::getInstance()->registerResource(m_octree);
 
 		m_ready = true;
-		return false;
+		return true;
 	}
 
 	void wakeup(std::map<std::string, SerializableObject *> &params) {